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Preprint ARTICLE | doi:10.20944/preprints202409.1423.v1

Sustainable Synthesis of New Antioxidants from Hydroxytyrosol by Direct Biocatalytic Esterification in Ionic Liquids

Susana Nieto, Inmaculada Lozano, Francisco J. Ruiz, Jose F. Costa, Rocio Villa, Pedro Lozano

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: hydroxytyrosol; applied biocatalysis; green processes; sponge-like ionic liquids; antioxidants

Online: 19 September 2024 (03:41:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1389.v1

Nanostructured Polymer Dispersed Liquid Crystals Using a Ferroelectric Smectic a Liquid Crystal

Masaki Yamaguchi, Hiroyuki Matsukizono, Yasushi Okumura, Hirotsugu Kikuchi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Polymer dispersed liquid crystals; Memory effect; Birefringence; Molecular orientation

Online: 18 September 2024 (10:21:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0846.v1

Gemcitabine Delivery System Based on Chitosan Capsules with Magnetite and Natural Zeolite (Clinoptilolite). Synthesis, Characterization and Evaluation of Its Anticancer and Bactericidal Properties

Yuly Andrea Guarín-González, Gerardo Cabello-Guzman, José Reyes-Gasga, Yanko Moreno-Navarro, Luis Vergara-González, Antonia Martin-Martín, Rodrigo López-Muñoz, Galo Cárdenas-Triviño, Luis Felipe Barraza

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: chitosan; magnetic nanoparticles; zeolite clinoptilolite; gemcitabine; drug carriers; ionic gelation

Online: 11 September 2024 (10:22:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0316.v1

Reaction Thermodynamic and Kinetics for Esterification of Propylene Glycol Monomethyl Ether and Acetic Acid over Ion-exchange Resin

Xinyu Liu, Shu Wang, Mingxia Wang, Lifang Chen, Zhiwen Qi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: propylene glycol methyl ether acetate (PMA); ion exchange resin; esterification; thermodynamic; kinetic models

Online: 4 September 2024 (05:00:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2222.v1

Electrochemical Detection of H2O2 using Bi2O3/Bi2O2Se Nanocomposites

Pooja D. Walimbe, Rajeev Kumar, Amit Kumar Shringi, Hazel Achieng Ouma, Obed Keelson, Fei Yan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Electrochemical sensors; Nanomaterials; Hydrogen peroxide; Bismuth oxyselenide

Online: 30 August 2024 (09:48:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1780.v1

Construction of Carbon Dioxide Responsive Graphene Point Imbibition and Drainage Fluid and Simulation of Imbibition Experiments

Peng Yin, Fang Shi, Mingjian Luo, Jingchun Wu, Yanan Yu, Chunlong Zhang, Bo Zhao

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Graphene Point; Carbon Dioxide Responsive; Nanoconfinement effects; Enhanced Oil Recovery

Online: 26 August 2024 (16:31:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1548.v1

Quality Control of Medical Food Using Near Infrared Spectroscopy and Multivariate Calibration Models

Hudson Pimentel Costa, Lívia Paulia Dias Ribeiro, Claudete Fernandes Pereira, Gisele Simone Lopes, Augusto Reinaldo Pimentel Guimarães, João da Silva Oliveira, Maria Socorro Moura Rufino

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Medical food; NIRS; Quality control

Online: 21 August 2024 (18:14:59 CEST)

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Preprint REVIEW | doi:10.20944/preprints202408.0774.v1

Recent Advances in Ammonia Synthesis Modeling and Experiments on Metal Nitrides and Other Catalytic Surfaces

Numair Elahi, Constantinos D. Zeinalipour-Yazdi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: ammonia synthesis; DFT; metal nitrides; photocatalytic; electrochemical

Online: 12 August 2024 (12:45:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0654.v1

Challenges in Metal Additive Manufacturing: Examining the technical and economic challenges associated with metal additive manufacturing

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: metal additive manufacturing; aerospace; automotive; healthcare

Online: 9 August 2024 (12:13:43 CEST)

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Preprint REVIEW | doi:10.20944/preprints202408.0521.v1

Photocatalytic Ozonation for Remediation of Contaminants in Aquaculture Effluent: A Review

Nurul Najiha Datu Masjidin, COLLIN G JOSEPH, Siow Hwa Teo, Jualang Azlan Gansau, Rosalam Sarbatly, Sivakumar Ramakrishnan, Mika Sillanpää

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Advanced Oxidation Processes; Aquaculture Wastewater; Contaminants of Emerging Concern; Photocatalysis; Ozonation

Online: 7 August 2024 (14:22:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0368.v1

Electrochemical Analysis of Corrosion Resistance of Manga-nese-Coated Annealed Steel: Chronoamperometric and Volta-metric Study

Francisco Augusto Nuñez Perez

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Electrochemical; Corrosion Resistance; Annealed Steel Electrodes

Online: 6 August 2024 (12:39:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2602.v1

Additive Manufacturing for Complex Geometries

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: additive manufacturing; complex geometries; stereolithography (SLA)

Online: 2 August 2024 (11:56:03 CEST)

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Additive manufacturing (AM), commonly known as 3D printing, has revolutionized the production of complex geometries that were once challenging or impossible to achieve through traditional manufacturing techniques. This paper investigates the capabilities of additive manufacturing in producing intricate designs, focusing on the unique advantages and potential applications across various industries. Additive manufacturing enables the creation of complex geometries by adding material layer by layer, allowing for greater design freedom and the ability to produce structures with intricate internal features, complex curves, and lightweight lattice structures. This capability is particularly advantageous in fields such as aerospace, biomedical, and automotive, where weight reduction, customization, and the integration of complex internal channels are critical. The study explores various additive manufacturing technologies, including stereolithography (SLA), selective laser sintering (SLS), and fused deposition modeling (FDM), highlighting their specific strengths and limitations in producing complex geometries. Factors such as material properties, resolution, surface finish, and build size are analyzed to determine the suitability of different AM processes for specific applications. Additionally, the research delves into the design considerations and software tools that facilitate the creation of complex geometries in AM, including generative design and topology optimization. These tools leverage the design freedom offered by AM to optimize structures for weight, strength, and functionality, pushing the boundaries of what is possible in product design. The paper concludes with an examination of the challenges and future directions in the field, such as improving material properties, reducing production costs, and enhancing the accuracy and reliability of AM processes. The potential of additive manufacturing to revolutionize the production of complex geometries is underscored, emphasizing its growing importance in modern manufacturing and its role in enabling innovative solutions across various industries. This abstract provides an overview of the potential and challenges of additive manufacturing for producing complex geometries, suitable for an academic paper or report. If you need more specific information or have a different focus, feel free to ask!

Preprint ARTICLE | doi:10.20944/preprints202407.2588.v1

Additive Manufacturing in Medical Applications

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: revolutionize healthcare; improve patient outcomes; additive manufacturing; medical applications

Online: 2 August 2024 (11:44:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2618.v1

Impact of Additive Manufacturing on Supply Chain Management

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: modern supply chains; Additive manufacturing (AM); 3D printing

Online: 31 July 2024 (16:44:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2606.v1

Digital Twins and Additive Manufacturing: Exploring the Integration of Digital Twin Technology with Additive Manufacturing to Enhance Design, Simulation, and Production Processes

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: digital twin technology; additive manufacturing (AM); simulations

Online: 31 July 2024 (15:16:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2573.v1

Sustainability in Additive Manufacturing: Analyzing the Environmental Impact of Additive Manufacturing Processes

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: applied chemistry; additive manufacturing; applied polymer

Online: 31 July 2024 (11:51:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2574.v1

4D Printing: Advancements and Applications: Research in the Emerging Field of 4D Printing

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: additive manufacturing; 4D printing; advancements and applications; emerging field of 4D printing

Online: 31 July 2024 (11:49:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2453.v1

Integration of Additive Manufacturing in Aerospace Engineering

Axel Egon, Chris Bell, Ralph Shad

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: engine components; structural parts; customized tooling

Online: 30 July 2024 (16:34:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2320.v1

Properties of Co-free Ni-Rich LiNi0.8Mn0.1Fe0.1O2 as Cathode Material for Lithium-Ion Batteries

Ahmed Mohamed Ahmed Hashem, Rasha Samir El-Tawil, Somia Mohamed Abbas, Ashraf El-Sayed Abdel-Ghany, Luca Bargnesi, Catia Arbizzani, Alain Mauger, Christian M. Julien

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Co-free; Ni-rich cathode; Li-ion batteries; LiNi0.8Mn0.1Fe0.1O2

Online: 29 July 2024 (13:59:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.2267.v1

Enhancing Colorimetric Detection of Nucleic Acids on Nitrocellulose Membranes: Cutting-Edge Applications in Diagnostics and Forensics

Nidhi Subhashini, Yannick Kerler, Marcus M Menger, Olga Böhm, Judith Witte, Christian Stadler, Alexander Griberman

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: colorimetric DNA detection; lateral flow assay; nitrocellulose membranes; StructSure Membranes; DNA for diagnostics; multiplexing; nucleic acid lateral flow assay (NALFA); protein-free; amplification-free; body-fluid identification

Online: 29 July 2024 (08:50:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1954.v1

Antiparasitary Potential Of Natural And Semi-Synthetic Labdane Diterpenes

Aline Nazaré Silva Parra, Ana Carolina Ferreira Soares Rocha, Julian Carlos da Silva Pavan, Analuz da Silva Machado, Vinícius José Miranda Rodrigues, Daiane Albino dos Santos, Lizandra Guidi Magalhães, Sérgio de Albuquerque, Vladimir Constantino Gomes Heleno

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Leishmaniasis; Chagas disease; Copalic acid; Structural Modification; Trypanocidal and Leishmanicidal activities

Online: 24 July 2024 (17:45:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1836.v1

Synthesis, Characterization and Cytotoxic Behavior against Hela of Iridium (III) Complexes, Half Sandwich Type

Gabriel García Sánchez, Alfonso Canales Martínez, Rosa María Pérez Pastor, Gloria Florenciano López, Isabel Romero Castellón, Gloria Víllora

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Iridium (III) complexes; Half sandwich; Synthesis and characterization; Anticancer activity Hela; MTT assay

Online: 24 July 2024 (07:17:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1359.v1

Industrial Catalytic Production Process of Erythromycin

Theodora Adamantidi, Ellie Panoutsopoulou, Evangelia Stavrakoudi, Panagiota Tzevelekou, Nikolaos C. Kokkinos

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Erythromycin production; catalytic mechanism; cytochrome P450; COVID-19

Online: 17 July 2024 (09:13:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1109.v1

Application of Reduced Graphene Oxide-Zinc Oxide Nanocomposite in the Removal of Pb(II) and Cd(II) Contaminated Wastewater

Moeng Geluk Motitswe, Kassim Olasunkanmi Badmus, Lindiwe Khotseng

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Toxic metal; wastewater; nanocomposite; adsorption; Freundlich

Online: 15 July 2024 (10:35:41 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0976.v1

Radish Root Ferment Filtrate for Cosmetic Preservation: A Study of Efficacy of Kopraphinol©

Claudia C.A. Juliano, Giovanni Antonio Magrini

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cosmetic preservatives; Lactobacillus/Radish Root Ferment Extract Filtrate; Kopraphinol©; ; Challenge test; MIC

Online: 11 July 2024 (16:37:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1942.v1

Emulsion stability controlled by anionic nonionic and zwitterionic surfactants and its mechanism of EOR in high temperature, high salt and low permeability reservoirs

Xiaotong Du, Gen Li, Xiuyu Zhu, Bin Huang, Honggang Yang, Xue Wang, Ying Jiao, Keliang Wang, Cheng Fu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Surfactant; Chemical enhanced oil recovery; Stability; Zwitterionic surfactants; Anionic-nonionic surfactants; amphoteric surfactants; Betaine

Online: 27 June 2024 (13:53:37 CEST)

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This study aims to investigate the interfacial tension, emulsion stability, and the impact on oil displacement effectiveness of mixed systems containing nonionic surfactants and amphoteric surfactants at different ratios. To achieve this, three different emulsion stability formulations were prepared by mixing betaine and nonionic surfactants in ratios of 1:1, 3:2, and 3:1 respectively. By adjusting the proportions of betaine and nonionic surfactants, variations in interfacial tension and emulsion formation among the three mixed systems were studied to analyze the mechanism of interaction between betaine and nonionic surfactants and evaluate their effects on crude oil displacement and enhanced oil recovery in reservoirs. Subsequently, microscopic and macroscopic oil displacement experiments were conducted on the three mixed systems, along with experiments on emulsion flow resistance. The aim was to verify the oil displacement effectiveness of different mixed systems and further understand their potential applications in reservoirs. By comprehensively analyzing the experimental results, optimal ratios and conditions for the mixed systems were determined. The experimental results indicate that the emulsification system formed by mixing betaine and nonionic surfactants at a ratio of 3:1 achieves molecular synergies through electrostatic interactions and mixed adsorption with betaine, resulting in a compact arrangement of interface membranes and demonstrating a synergistic effect in reducing interfacial tension to an ultra-low value of 10 -4 mN/m. Additionally, as the proportion of betaine surfactant increases, the viscosity of the aqueous phase liquid film increases, the rate of thinning of the liquid film slows down, the rate of water release slows down, and the stability of the emulsion increases. Microscopic oil displacement experiments verified that the three mixed systems increase oil washing efficiency through low interfacial tension and emulsification stripping action, thereby increasing the oil displacement mechanism's coefficient. Emulsion flow resistance experiments demonstrated that as the proportion of betaine surfactant increases, the system exhibits better plugging ability. However, macroscopic oil displacement experiments revealed differences in compatibility between different emulsion stability solutions and rocks with different permeabilities. The mixed system of betaine and nonionic surfactants at a ratio of 3:1 exhibits the best emulsification plugging ability in rocks with a permeability of 109mD, while the 1:1 mixed system performs best in rocks with a permeability of 12mD. This holds significant theoretical and practical significance for reservoir development and enhanced production.

Preprint ARTICLE | doi:10.20944/preprints202406.0656.v1

Study on the High Stability and Catalytic Properties of MOF Materials Represented by UiO-66 / G-C3N4

Lehan Gao, Jingjing Ma, Bowen Lei, Shenglin Xue, He Sui, Yang Zhang, Yang Ding, Xiaoyu Dai, Yating Xu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: photocatalytic adsorbentor; ganophosphorus; pesticide; phosphorus recovery; air purification

Online: 11 June 2024 (10:59:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0112.v1

Nano-indentation Response of Structural Self-Healing Epoxy Resin: A Hybrid Experimental-Simulation Approach

Giovanni Spinelli, Rosella Guarini, Evgeni Ivanov, Elisa Calabrese, Marialuigia Raimondo, Raffaele Longo, Liberata Guadagno, Luigi Vertuccio

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: nano-indentation; epoxy resin; mechanical properties; self-healing

Online: 3 June 2024 (14:49:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0004.v1

Removal of organic pollutants by subcritical water under moderate conditions

Jaroslava Svarc Gajic, Tanja Brezo-Borjan, Sandra Jaksic, Vesna Despotovic, Nina Fincur, Szabolcs Bognár, Dusica Jovanovic, Daniela Sojic Merkulov

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: water pollutants; remediation; subcritical water decomposition; pesticides; pharmaceuticals; mycotoxins

Online: 3 June 2024 (11:48:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.2026.v1

Effect of Support on Steam Reforming of Ethanol for H₂ Production with Copper-Based Catalysts

Ramiro Picoli Nippes, Paula Derksen Macruz, Aline Domingues Gomes, Marcos de Souza, Bruna Rodrigues Ferreira, Roberta Carolina Pelissari Rizzo-Domingues, Luiz Pereira Ramos

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Ethanol steam reforming; Hydrogen production; Copper-based catalysts; Zeolite; Mixed oxides

Online: 30 May 2024 (13:24:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1940.v1

Microflow Injection System for Efficient Cu(II) Detection Across a Broad Range

David Ricart, Antonio David Dorado, Conxita Lao-Luque, Mireia Baeza

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Cu(II); 3D-printed microfluidic platform; micro-FIA; bioleaching; e-waste; circular economy

Online: 29 May 2024 (14:05:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1747.v1

Innovative Alkanediol-Based Eutectic Solvents for Extracting/Pre-Formulating Dermatologically Valuable Free Fatty Acids from Spirulina and Porphyridium Cakes

Laura Wils, Mervé Yagmur, Nicolas Bellin, Myriam Phelippe, Alia Chevalley, Charles Bodet, Leslie Boudesocque-Delaye

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: spirulina; Porphyridium cruentum; biorefinery; eutectic solvent; free fatty acids; skin microbiota; alkanediol

Online: 27 May 2024 (13:35:15 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202405.0979.v1

Multiplicity of Human Scent Signature in Identification of Persons by Computer-Based Olfactronics

Luděk Bouška, Štěpán Urban, Ulrika Mala

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: GCxGC-MS; forensic; olfactronic; scent signature; digital scent sample; identification of persons; chromatogram; multiplicity

Online: 15 May 2024 (10:18:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0390.v1

BSA Binding and Aggregate Formation of a Synthetic Amino Acid with Potential for Promoting Fibroblast Proliferation: An In Silico, CD Spectroscopic, DLS, and Cellular Study

Hayarpi M Simonyan, Rosanna Palumbo, Satenik Petrosyan, Anna F Mkrtchyan, Armen Galstyan, Ashot S. Saghyan, Pasqualina Liana Scognamiglio, Caterina Vicidomini, Marta Fik-Jaskółka, Giovanni N Roviello

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: in silico; protein binding; self-assembling system; synthetic amino acid; fibroblast growth enhancement; tissue regeneration

Online: 7 May 2024 (15:41:49 CEST)

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This study presents the chemical synthesis, purification, and characterization of a novel non-natural synthetic amino acid. The compound was synthesized in solution, purified, and characterized using NMR spectroscopy, polarimetry, and melting point determination. Dynamic Light 22 Scattering (DLS) analysis demonstrated its ability to form aggregates with an average size of 391 nm, extending to low micrometric sizes. Furthermore, cellular biological assays revealed its ability to enhance fibroblast cell growth, highlighting its potential for tissue regenerative applications. Circular dichroism (CD) spectroscopy showed the ability of the synthetic amino acid to bind serum albumins (using bovine serum albumin (BSA) as a model), and CD deconvolution provided insights into the changes in secondary structures of BSA upon interaction with the amino acid ligand. Additionally, molecular docking using HDOCK software elucidated the most likely binding mode of the ligand inside the BSA structure. We also performed in silico oligomerization of the synthetic compound in order to obtain a model of aggregate to investigate computationally. More in detail, in the dimer formation achieved by molecular self-docking, two distinct poses were observed, corresponding to the lowest and comparable energies, with one pose exhibiting a quasi-coplanar arrangement characterized by a close alignment of two aromatic rings from the synthetic amino acids within the dimer, suggesting the presence of π-π stacking interactions. In contrast, the second pose displayed a non-coplanar configuration, with the aromatic rings oriented in a staggered arrangement, indicating distinct modes of interaction. Both poses were further utilized in the self-docking procedure. Notably, iterative molecular docking of amino acid structures resulted in the formation of higher-order aggregates, with a model of a 512-mer aggregate obtained through self-docking procedures. This model of aggregate presented a cavity capable of hosting therapeutic cargoes and biomolecules, rendering it a potential scaffold for cell adhesion and growth in tissue regenerative applications. Overall, our findings highlight the potential of this synthetic amino acid for tissue regenerative therapeutics and provide valuable insights into its molecular interactions and aggregation behavior.

Preprint ARTICLE | doi:10.20944/preprints202404.1520.v1

Design and Synthesis of Multifunctional Symmerical Squaraine Dyes for Molecular Photovoltaics by Terminal Alkyl-Chain Modifications

Kota Mori, Yuki Kurokawa, SHYAM S. PANDEY

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Dye-sensitized solar cells; Squaraine dye; Electrolyte effect; Terminal modification; Multifunctional; Dye sensitizer

Online: 23 April 2024 (17:13:13 CEST)

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Preprint ESSAY | doi:10.20944/preprints202404.0116.v1

Molecules, up Your Spins!

Danila Barskiy

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Nuclear magnetic resonance (NMR); magnetic resonance imaging (MRI); hyperpolarization (HP); positron emission tomography (PET); dynamic nuclear polarization (DNP); chemically induced dynamic nuclear polarization (CIDNP); parahydrogen-induced polarization (PHIP); signal amplification by reversible exchange (SABRE); atomic magnetometers (AMs); nitrogen-vacancy (NV) centers in diamond; quantum information processing (QIP); quantum metrology (QM).

Online: 2 April 2024 (02:29:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1707.v1

An Archaeometric Study of Lead Glazed Medieval Ceramics (13th–14th Century) from Santarém, Portugal

Luis Filipe Vieira Ferreira, Tania Manuel Casimiro, Carlos Boavida, Manuel Francisco Costa Pereira, Isabel Luisa Ferreira Machado

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Medieval ceramics; Santaré; m; micro-Raman; GSDR; XRD; XRF; SM

Online: 28 March 2024 (08:41:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1672.v1

Phenolic Monoterpenes Conversion of Conobea scoparioides Essential Oil by Hydrotalcite Synthesized from Blast-Furnace Slag

Monaliza M. Rebelo, Eloisa Helena A. Andrade, Jose Augusto M. Corrêa, José Guilherme S. Maia

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: pataqueira; thymol; essential oil composition; hydrotalcite; blast furnace slag

Online: 28 March 2024 (04:27:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0778.v1

Comparison of the Efficiency of Deep Eutectic and Organic Solvents on the Extraction of Phytochemicals from Cannabis sativa L.

Getrude G Kanyairita, Desmond G Mortley, Melissa Boersma, Willard E Collier

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: phytochemical; deep eutectic solvent; terpenes; cannabinoids; organic solvents; extraction; industrial hemp; Cannabis sativa L.

Online: 13 March 2024 (12:14:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0308.v1

Emulsion Liquid Membranes Based on Os–NP/n–decanol or n–dodecanol Nanodispersions for p–Nitrophenol Reduction

Andreia Pîrțac, Aurelia Cristina Nechifor, Szidonia-Katalin Tanczos, Ovidiu Cristian Oprea, Alexandra Raluca Grosu, Cristian Matei, Vlad-Alexandru Grosu, Bogdan Stefan Vasile, Paul Constantin Albu, Gheorghe Nechifor

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Osmium; Osmium nanoparticle; osmium reduction; p– nitrophenol reduction; nanodispersion; liquid membranes; emulsion liquid membranes; undecylenic acid; n– dodecanol; n– decanol

Online: 6 March 2024 (10:57:10 CET)

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Materials based on platinum metals with very good catalytic activity were tested in the reduction of p–nitrophenol (pNP) to p–aminophenol (pAP). The majority of presented catalytic materials are based on the adsorption of p–nitrophenol on the surface of the catalyst simultaneously with molecular hydrogen, coming from sodium borohydride in an aqueous medium, which reduces it. In the present paper, a catalytic material based on osmium dispersed in n–decanol or n–dodecanol is presented, which also works as an emulsion membrane, for the absorption of p–nitrophenol and molecular hydrogen at the n–alcohol aqueous solution interface. The hydrogenation of p–nitrophenol is carried out in a reaction and separation column in which the acid receiving phase emulsion is dispersed in the osmium nanodispersion, in n–alcohols. This emulsion circulates from the base of the column to its upper part in co-current or counter-current with the source phase consisting of p–nitrophenol and sodium borohydride. Experiments show that the circulation of counter-current phases is superior to that in co-current, and the emulsion based on n–decanol is more efficient than the one based on n–dodecanol. The increase in the pH difference between the source and receiving phases leads to the increase in the conversion of p–nitrophenol to p–aminophenol. The efficiency of separation of the reaction product in the receiving phase is lower than the conversion at the same operating time. The apparent catalytic rate constant (kapp) of the new catalytic material based on the emulsion membrane with nanodispersion of osmium nanoparticles (0.1×10−3 for n–dodecanol and 0.9×10−3 for n-decanol) is lower by an order of magnitude compared to those based on adsorption on catalysts from platinum metal group. The advantage of the tested membrane catalytic material is that it extracts p–aminophenol in the acid receiving phase. The paper proposes a mechanism of the studied reduction system.

Preprint ARTICLE | doi:10.20944/preprints202402.1457.v1

Numerical Simulation of Polyacrylamide Hydrogel Prepared by Thermal Initiated Frontal Polymerization

Xiong Yi, Shengfang Li, Pin Wen, Shilin Yan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Frontal Polymerization； Acrylamide Hydrogel；Curing Kinetics； Numerical Simulation； DSC

Online: 26 February 2024 (14:16:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1149.v1

Solvent Extraction of Au(III) by 2-ethylhexanol and Kinetic Modelling of the Facilitated Transport Across a Liquid Membrane

Francisco Jose Alguacil, Jose Ignacio Robla

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: gold(III); 2-ethylhexanol; extraction; membrane transport; gold nanoparticles

Online: 20 February 2024 (12:38:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1121.v1

Evaluation of the Effect of Particle Size and Biomass-to-Water Ratio on the Hydrothermal Carbonization of Sugarcane Bagasse

Leidy Natalia Moreno-Chocontá, Alejandra Sophia Lozano-Pérez, Carlos Alberto Guerrero-Fajardo

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: hydrothermal carbonization; platform chemicals; hydrochar; sugarcane bagasse

Online: 20 February 2024 (08:55:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1874.v1

Synthesis of Helional by Hydrodechlorination Reaction in the Presence of Mono and Bi-metallic Catalysts Supported on Alumina

Oreste Piccolo, Iztok Arčon, Gangadhar Das, Giuliana Aquilante, Andrea Prai, Stefano Paganelli, Manuela Facchin, Valentina Beghetto

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Helional®; ; selective hydrodechlorination; heterogeneous catalysis; XANES analysis; EXAFS analysis

Online: 26 January 2024 (09:41:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1440.v1

Duplex vertical flow rapid tests for point-of-care detection of anti-dsDNA and anti-nuclear autoantibodies

Rongwei Lei, Hufsa Arain, David Wang, Janani Arunachalam, Ramesh Saxena, Chandra Mohan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: anti-nuclear antibody, anti-dsDNA antibody, vertical flow assay, Gold nanoparticles, rheumatic disease

Online: 19 January 2024 (09:22:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1161.v1

Conventional and Green Rubber Plasticizers Classified through the Nile Red [E(NR)] and Reichardt’s Polarity Scale [E_T(30)]

Franco Cataldo

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: rubbers; plasticizers; solvatochromic dyes; Nile Red dye; Reichardt dye ET(30); Reichardt dye ET(33); compatibility; solubility parameter

Online: 16 January 2024 (09:58:34 CET)

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Preprint REVIEW | doi:10.20944/preprints202401.0534.v1

Introduction and Advancements in Room Temperature Ferromagnetic Metal Oxide Semiconductors for Enhanced Photocatalytic Performance

Ganeshraja Ayyakannu Sundaram, Muniyandi Govinda raj, Dr. Jayashree Ethiraj, Parimelazhagan Vairavel, Santhana krishna kumar Alagarsamy

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Metal Oxide Semiconductors; Photocatalytic Performance; Environmental Remediation; Oxygen Vacancy

Online: 8 January 2024 (08:21:51 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.2293.v1

Potential of Deep Eutectic Solvents in the Extraction of Organic Compounds From Food Industry By-Products and Agro-Industrial Waste

Maja Molnar, Dajana Gašo Sokač, Mario Komar, Martina Jakovljević Kovač, Valentina Bušić

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: deep eutectic solvents; bioactive organic compounds; food industry by-products; greener sol-vents; agro-industrial waste

Online: 3 January 2024 (09:55:33 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.2155.v1

Agriculture By -Products Wastes as Low-Cost Bio-Sorbents for Heavy Metals Removal from Industrial Waste Stream, Short Review

Mohamed Ahmed Habib, Inas Elkhedr Mohamed

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: heavy metals; aqueous system- toxicity; agriculture by-products; agro-wastes; bio -sorbents; adsorption kinetics

Online: 28 December 2023 (10:19:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1873.v1

Preparation of pH-Responsive BTA@DME/PDA Microcapsules and Their Application in Anti-corrosion Coatings

Beiyao Zhang, Mingjun Zhang, Jiaying Jin, Shupei Liu, Jin song Rao, Haiyan Li

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: diatomite nanoporous microcontainers; pH-responsive microcapsules; anti-corrosion coatings

Online: 25 December 2023 (11:08:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1375.v1

Simultaneously Recovery of Thorium and Tungsten by Hybrid Electrolysis–Nanofiltration Processes

Geani Teodor Man, Paul Constantin Albu, Aurelia Cristina Nechifor, Alexandra Raluca Grosu, Diana Ionela Popescu (Stegarus), Vlad-Alexandru Grosu, Virgil Emanuel Marinescu, Gheorghe Nechifor

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: thorium recovery; wolfram recovery; membrane processes; membrane electrolysis; nanofiltration; thorium recycling; wolfram recycling; Pourbaix diagrams

Online: 19 December 2023 (09:44:08 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.1417.v1

Carbon Dioxide Methanation Enabled by Biochar-Nanocatalyst Composite Materials. A Mini-Review

Mengqi Tang, Ahmed Gamal, Arvind K. Bhakta, Khouloud Jlassi, Aboubakr M. Abdullah, Mohamed M. CHEHIMI

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: carbon dioxide utilization; methanation; reduction of CO2 emission; biochar; immobilized nanocatalysts

Online: 19 December 2023 (08:41:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1305.v1

The Synthesis and Performance of a Novel Lignin Modified Salt Resistance Branched High-Performance Water Reducer

Haipeng Xin, Donggang Guo

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Water reducer; Salt resistance; Dispersant

Online: 18 December 2023 (09:02:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1193.v1

Theoretical Investigation on Selected 3-amino-5- [(2,4,6-trinitrophenyl)amino]-1H-1,2,4-triazole Salts with Perspective Energetic Anions

Jelena Tamuliene, Jonas Sarlauskas

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 3-amino-5-[(2,4,6-trinitrophenyl)amino]-1H-1,2,4-triazole; oxidizible salts; energetic properties; oxygen balance; stability; resistance to shock stimuli.

Online: 15 December 2023 (13:38:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1060.v1

Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance

Andrew Nyabuto Onderi, Silvester Abuodha, John Mwero, Lenka Scheinherrová, Joseph Mwiti Marangu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: self-consolidating concrete; aloe vera mucilage; superplasticizer; rheology; yield stress; compressive strength; hydration stoppage

Online: 14 December 2023 (06:51:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0967.v1

Surface Redox Reaction for the Synthesis of NiPt Catalysts for the Upgrading of Renewable Ethanol/Methanol Mixtures

Joachim Pasel, Friederike Woltmann, Johannes Häusler, Ralf Peters

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Mixed alcohols; catalytic upgrading; iso-butanol; NiPt alloy catalysts; Guerbet reaction; surface redox reaction

Online: 13 December 2023 (12:11:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0914.v1

Natural Deep Eutectic Solvents as Rust Removal Agents from Lithic and Cellulosic Substrates

Francesco Gabriele, Cinzia Casieri, Nicoletta Spreti

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Deep eutectic solvents; Iron rust; Lithic surface; Cellulosic substrate; Cleaning; Reducing agent

Online: 13 December 2023 (10:50:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0773.v1

Hydrothermal valorization via liquid hot water and hydrothermal carbonization of pea pod waste: Characterization of the biochar, and quantification of platform molecules.

Daniel Esteban Galvis-Sandoval, Alejandra Sophia Lozano-Pérez, Carlos Alberto Guerrero-Fajardo

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Peapods; hydrothermal valorization; platform chemicals; catalysts; HTC; LHW

Online: 12 December 2023 (06:09:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0084.v1

Synthesis and Characterization of Metal Oxide Nanoparticles Anchored Carbon as Hybrid Adsorbents for Effective Heavy Metals-Uptake from Wastewater

Abdullah G ALanazi, Mohamed A Habila, Zeid A ALOthman, Ahmed Yacine Badjah-Hadj-Ahmed

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: hybrid materials; zinc oxide nanoparticles; carbon; iron (III) oxide nanoparticle; adsorption; ki-netic and equilibrium studies

Online: 1 December 2023 (13:35:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1412.v1

Features of Plasma-Chemical Hydrogen Reduction of Volatile Silicon and Germanium Chlorides in rf-arc Discharge

Roman Kornev, Igor Gornushkin, Lubov Shabarova, Artur Ermakov, Georgiy Mochalov, Nikita Rekunov, Vitaly Medov, Alena Chaschina, Alexandra Kalinina

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: RF-arc discharge; hydrogen reduction; silicon chloride; germanium chloride; thermodynamic; silicon; germanium

Online: 22 November 2023 (12:00:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1249.v1

Flame Chemistry in the ISO/TS 19700 Steady State Tube Furnace

Gabrielle Peck, Ryan Hayes

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Nitrogen; Smoke toxicity; Flame zone; Carbon monoxide; SSTF

Online: 20 November 2023 (14:05:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1148.v1

Thermophysical and Transport Properties of Deep Eutectic Solvent Mixtures Containing Pure Choline Chloride/Ethylene Glycol with a Mole Ratio of 1:4 and Mixed with LiPF6 for Application in Redox-flow Batteries

Farshid Zargari Shastan, Alireza Nowroozi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: DES; density; diffusion coefficient; viscosity; ionic conductivity; redox-flow batteries; molecular dynamics simulations

Online: 17 November 2023 (08:09:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0837.v1

“A woman clothed with the sun”: diagnostic study and testing of enzyme-based green products for the restoration of an early 17th century wall painting of Palazzo Gallo in Bagnaia (Italy)

Claudia Colantonio, Luca Lanteri, Ramona Bocci, Valeria Valentini, Claudia Pelosi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: wall painting; restoration; enzymatic cleaning; non-invasive diagnostics

Online: 13 November 2023 (15:58:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0437.v1

Synthesis, Characterization and Antibacterial Studies of New Cu(II) and Pd(II) Complexes with 6-Methyl-2- thiouracil and 6-Propyl-2-thiouracil

Petja Emilova Marinova, Mariyan Nedelchev Hristov, Slava Hristova Tsoneva, Nikola Tomov Burdzhiev, Denica Eliyanova Blazheva, Aleksandar Krasimirov Slavchev, Evelina Konstantinova Varbanova, Plamen Nikolov Penchev

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 6-methyl-2-thiouracil, 6-propyl-2-thiouracil; complexation, copper(II) complexes, palladium(II) complexes, antimicrobial activity

Online: 7 November 2023 (10:37:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0234.v1

Simple One−pot Synthesis of hexakis(2-Alkoxyl-1,5-Phenyleneimine) Macrocycles by Precipitation−driven Cyclization

Toshihiko Matsumoto

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: simple one−pot procedure; imine−based macrocycles; dynamic covalent polymer; Schiff base; azomethine; precipitation−driven cyclization; −stacked columnar aggregates; columnar liquid crystal; physical gel; thixotropy

Online: 3 November 2023 (10:26:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1652.v1

N′-((E)-3,3-Diphenyl-2,3-Dihydro-1H-Inden-1-Ylidene)-2-((Z)-2-Oxoindolin-3-Ylidene)Hydrazine-1-Carbothiohydrazide Ligand and Its Complexes: Spectroscopic, Molecular Orbital, Molecular Docking, Structural Study and Antimicrobial Activity

Ehab M Zayed, Wael A. El-Sayed, Marzough Aziz Albalawi, Hayam A Abd El Salam, Fatma A El-Samahy, Gehad G. Mohamed

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: indanone; thio-carbohydrazones; isatin; metals-synthesis-organometallics; computational study; molecular docking; antimicrobial activity

Online: 26 October 2023 (07:09:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1624.v1

Shock-Induced Degradation of Guanosine and Uridine Promoted by Nickel and Carbonate: Potential Applications

Gustavo P. Maia, José Armando Luisa Da Silva, Vânia André, Adelino M. Galvão

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: mechanochemistry; DFT; degradation reactions; Meteorites; Asteroids

Online: 25 October 2023 (09:32:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1137.v1

The Advantages of Non-Adhesive Gel-like Embolic Materials in the Endovascular Treatment of Benign Hypervascularised Lesions of the Head and Neck

Andrey Petrov, Arkady Ivanov, Egor Kolomin, Nikita Tukanov, Anna Petrova, Larisa Rozhchenko, Ulia Suvorova

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: embolic agent; ONYX; SQUID; PHIL; vascular malformations; paragangliomas

Online: 18 October 2023 (07:14:26 CEST)

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Objectives: Non-adhesive gel-like embolic materials (NAGLEMs) are becoming increasingly dominant in the endovascular treatment of hypervascularised formations in the head and neck due to a combination of their key properties. The main advantages include their lack of adhesion, effective distribution and penetration through pathological vessels, and crucially, their controlla-bility during the process. Our assigned duty was to scrutinise the literature and assess the efficacy and outcomes of administering NAGLEMs, in comparison to other embolizing substances (name-ly, coils, glue, and particles), among patients treated at our clinic. The procedures involved ana-lyzing the technical aspects, efficiency, and safety of endovascular therapy applied to two catego-ries of hypervascular pathological anomalies, surgically managed from 2015 to 2023. Arteriove-nous malformations (AVMs) located in the head, neck, and paragangliomas with jugular/carotid body localization are combined by intense shunting blood flow and shared requirements for em-bolizates used in endovascular treatment (such as penetration, distribution, delayed polymeriza-tion and controllability). An analysis of the literature was also conducted. Results showed 18 pa-tients diagnosed with neck paragangliomas of the carotid body and jugular type. Five patients with arteriovenous malformation (AVM) of the face and neck were included, consisting of 16 fe-males and 7 males with an average age of 55 ± 13 years. Endovascular procedures were conduct-ed using NAGLEMs (ONYX (Medtronic), SQUID (Balt), and PHIL (Microvention)) and dimethyl sulfoxide (DMSO)-compatible balloon catheters. All patients achieved complete or partial embo-lization of hypervascularized formations using one or more stages of endovascular treatment. Additionally, three AVMs of the face and two paragangliomas of the neck were surgically ex-cised following embolization. In other instances, formations were not deemed necessary to be re-moved. The patients' condition upon discharge was assessed by the modified Rankin Scale (mRs) and rated between 0 and 2. Conclusion: Currently, NAGLEMs are predominantly used to treat hypervascularized formations in the neck and head due to their fundamental properties. These properties include a lack of adhesion and a delay in predictable polymerization (after 30-40 minutes). NAGLEMs also exhibit excellent distribution and penetration throughout the vascular bed of the formation. Adequate controllability of the process is largely achieved through the pres-ence of embolism forms of different viscosity, as well as excellent X-ray visualization.

Preprint REVIEW | doi:10.20944/preprints202310.1035.v1

Recent Advances in Reverse Water Gas Conversion Reaction

Changjian Zhou, Jiahao Zhang, Yuqing Fu, Hui Dai

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: CO2 conversion; CO; reverse water gas conversion reaction

Online: 17 October 2023 (09:35:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0890.v1

Oxidized Alginate and Nano-Hydroxyapatite as Biodegradable Tanning Agent and Non-Toxic Flame Retardant for cleaner leather tanning and post-tanning processes

Ilaria Quaratesi, Maria Cristina Micu, Erica Rebba, Cristina Carsote, Noemi Proietti, Valeria Di Tullio, Rita Porcaro, Elena Badea

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Oxidized sodium alginate, nano-hydroxyapatite, tanning agent, flame retardant, clean technology, sustainable leather.

Online: 13 October 2023 (11:17:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0809.v1

Novel Zinc/Silver Ions-Loaded Alginate Microparticles: Synthesis, Physicochemical Properties, and Antifungal Activity Against Botrytis cinerea

Marko Vinceković, Slaven Jurić, Kristina Vlahoviček-Kahlina, Katarina Martinko, Suzana Šegota, Marijan Marijan, Ana Krčelić, Lidija Svečnjak, Mislav Majdak, Ivan Nemet, Sanda Rončević, Iva Rezić

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: zinc alginate; zinc ions; silver ions; encapsulation; agriculture; Botrytis cinerea

Online: 13 October 2023 (02:54:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0811.v1

Synthesis and Characterization of Self-Crosslinked Organic Copolymer k-Carrageenan/Polyacrylamide/Cetrimide (k-CAR/PAAm/CI) Hydrogel with Antimicrobial and Anti-inflammatory Activity for Wound Healing

Fatimah Abdulaziz Agili, Sahera Fathalla Mohamed

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: k-carrageenan, acrylamide, cetrimide, antimicrobial, anti-inflammatory, wound healing

Online: 12 October 2023 (11:25:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0535.v1

Dissolved Calcium in Kentucky Lake and Its Watershed: Trends and Possible Sources and Implications for Zebra Mussel Colonization

Kelsie Meystedt, Bommanna G Loganathan, Susan P. Hendricks, David S. White

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Dissolved Calcium; Kentucky Lake; Streams; Ohio River; Zebra Mussel

Online: 9 October 2023 (12:33:42 CEST)

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Dissolved calcium (Ca2+) concentrations in freshwater ecosystems are of growing concern as increasing levels have been implicated in altering the environmental conditions and biodiversity. Elevated Ca2+ levels and sporadic re-emergence and disappearance of invasive zebra mussels in Kentucky Lake in recent years served as a motivation for this study. The objective of this study was to determine Ca2+ spatial and temporal patterns in Kentucky Lake, selected tributary streams, and the Ohio River during and following a zebra mussel invasion. Over 1000 water samples were collected and analysed for dissolved calcium during 2018-2022. Approved analytical methods were followed for sampling and measuring dissolved calcium levels. Results revealed significant spatial and temporal patterns. Kentucky Lake Ca2+ levels varied between 15-25 mg/L depending on the sampling location and month/year. Kentucky Lake channel sites exhibited comparably higher concentrations of Ca 2+ than did most embayment and/or stream sites, indicating that tributary streams did not serve as primary sources of calcium to the lake. Dissolved calcium levels at main lake sites exceeded the threshold for zebra mussel growth and reproduction in 2018 during the time when zebra mussels were present. Calcium in lake water samples collected from 2019 through 2022 was at or just below the threshold. Temporal trend data showed a gradual increase in Ca2+ in Kentucky Lake throughout the study period but remaining at or below the threshold level considered critical for the zebra mussels’ reproduction and development. Calcium levels in the Ohio River site at Paducah were similar to Kentucky Lake reflecting the predominance of Tennessee River water, while levels at the Brookport site were consistent with values known to support zebra mussel populations. The elevated calcium levels in Kentucky Lake waters during the late winter and early spring months may be due to natural sources (mineral weathering) as well as human activities in the Tennessee River basin. This study emphasizes the need for continued calcium monitoring in the watershed to determine the potential for future zebra mussel outbreaks and potential influences on the lake ecosystem and its functions.

Preprint ARTICLE | doi:10.20944/preprints202310.0267.v1

Na Promoted FeZn@SiO2-C Catalysts for Sustainable Production of Low Olefins by CO2 Hydrogenation

Zhijiang Ni, Mingxing Cai, Shiyu Zhong, Xiaoyu Chen, Hanyu Shen, Lin Su

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: FeZnNa@SiO2-C; promoters effects; low olefins; CO2 hydrogenation

Online: 5 October 2023 (11:59:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1936.v1

Design, Synthesis and Bioactivity Evaluation of Heterocycle-Containing Mono- and Bisphosphonic Acid Compounds

Xin Wu, Zili Yang, Mengwei Bu, Jiang Duan, Aidong Zhang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: monophosphonic acid; bisphosphonic acid; heterocycle; DXR; herbicidal activity

Online: 28 September 2023 (04:59:10 CEST)

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Fosmidomycin (FOS) is a naturally occurring compound active against the enzyme DXR in the MEP pathway, and using it as a template for lead structure design is an effective strategy in developing new active compounds. In this work, by replacing the hydroxamate unit of FOS with pyrazole, isoxazole and the related heterocycles that also have the metal ion binding affinity, while retaining the monophosphonic acid in FOS or replacing it with a bisphosphonic acid group, heterocycle-containing mono- and bisphosphonic acid compounds as FOS analogs were designed. The key steps involved in the facile synthesis of these FOS analogs include the Michael addition of diethyl vinylphosphonate or tetraethyl vinylidenebisphosphonate to β-dicarbonyl compounds and the subsequent cyclic condensation with hydrazine or hydroxylamine. Two additional isoxazolinone-bearing FOS analogs were synthesized by the Michaelis-Becker reaction with diethyl phosphite as a key step. The bioactivity evaluation on model plants demonstrated that several compounds have better herbicidal activities compared to FOS, with the most active compound showing a 3.7-fold inhibitory activity on Arabidopsis thaliana, while on the root and stalk of Brassica napus L. and Echinochloa crus-galli in pre-emergence inhibitory activity test, the activities of this compound were found to be 3.2- and 14.3-, 5.4- and 9.4-fold, respectively, and in post-emergency activity test on Amaranthus retroflexus and Echinochloa crus-galli, 2.2- and 2.0-fold inhibition activities were displayed. Despite the significant herbicidal activity, this compound exhibited a DXR inhibitory activity lower than that of FOS but comparable to that of other non-hydroxamate DXR inhibitors, and the dimethylallyl pyrophosphate rescue assay gave no statistical significance, suggesting a different target might be involved in the inhibiting process. This work demonstrates that using bioisosteric replacement can be considered a valuable strategy for discovering new FOS analogs that may have high herbicidal activity.

Preprint ARTICLE | doi:10.20944/preprints202309.0204.v1

Synthesis of a New Dinuclear Cu(I) Complex with Triazine Ligand and diphenylphosphine methane: X-ray Structure, Optical properties, DFT calculations and application in DSSC

Carlos A. Peñuelas, José J. Campos-Gaxiola, Rody Soto-Rojo, Adriana Cruz-Enríquez, Edgar A. Reynoso-Soto, Valentín Miranda-Soto, Juventino J. García, Marcos Flores Alamo, Jesús Baldenebro-López, Daniel Glossman Mitnik

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: copper (I); triazine, phosphine, crystal structure, theoretical calculations, co-sensitized.

Online: 4 September 2023 (14:59:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.2066.v1

Mechanisms and Adsorption Capacities of Natural and Eco-friendly Nanoparticles for Heavy Metals and Phosphate Ions from Water Using the DSD Approach

Jovana Jokić Govedarica, Dragana Tomašević Pilipović, Vesna Gvoić, Đurđa Kerkez, Anita Leovac Maćerak, Nataša Slijepčević, Gábor Kozma, Milena Bečelić Tomin

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Eco-friendly green synthesis; Nano zero-valent iron; Cadmium; Nickel; Definitive screening design

Online: 31 August 2023 (03:03:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1050.v2

Optimization of an Antifungal Nail Polish Containing Itraconazole 1% and Evaluation for Its Transungual Penetration

Sukanya Nagfernandes, Mali Ram Gupta

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: transungual; nail lacquer; itraconazole hydrochloride; antifungal; nail plate

Online: 29 August 2023 (04:45:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1781.v1

Approach of Supercritical Carbon Dioxide for the Extraction of Kleeb Bua Daeng Formula

Nittaya Ngamkhae, Orawan Monthakantirat, Yaowared Chulikhit, Juthamart Maneenet, Charinya Khamphukdee, Yutthana Chotritthirong, Suphatson Limsakul, Chantana Boonyarat, Supaporn Pitiporn, Pakakrong Kwankhao, Anake Kijjoa, Supawadee Daodee

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Supercritical fluid extraction; response surface methodology; Box-Behnken design; Kleeb Bua Daeng formula

Online: 25 August 2023 (11:43:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1545.v1

Using the Colloidal Method to Prepare Au Catalysts for the Alkylation of Aniline by Benzyl Alcohol

Luka Victoria Hare, Firdaus Parveen, James Cookson, Peter Richard Ellis, Klaus Hellgardt, King Kuok (Mimi) Hii

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Au-supported catalyst, structure-activity-relationship; H-borrowing catalysis; Alkylation of amine

Online: 22 August 2023 (09:27:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1050.v1

Title: Optimization of an Antifungal Nail Polish containing Itraconazole 1% and Evaluation for its Transungual Penetration

Sukanya Nagfernandes, Mali Ram Gupta

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: transungual; antifungal nail lacquer; Itraconazole Nail Medication; Nail Drug Uptake; Nail penetration; Nail Plate Application; itraconazole hydrochloride; Topical Nail Polish; nail clipping; Nail Diffusion

Online: 15 August 2023 (07:06:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0829.v1

Fabrication of Fe₃O₄ Core-TiO₂/mesoSiO₂ and Fe₃O₄ Core-mesoSiO₂/TiO₂ Double Shell Nanoparticles for Methylene Blue Adsorption: Kinetic, Isotherms and Thermodynamic Characterization

Ahmed Mohamed El-Toni, Mohamed A. Habila, Mohamed Sheikh, Mohamed El-Mahrouky, Abdulrhman S. Al-Awadi, Zeid ALOthman

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: magnetic core; silica shell; titnaia shell; water treatment; methylene blue; solvo-thermal process; adsorption

Online: 10 August 2023 (10:41:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0027.v1

Synthesis of Silver Nanocubes@Cobalt Ferrite/Graphitic Carbon Nitride for Electrochemical Water Splitting

Ausrine Zabielaite, Olegas Eicher-Lorka, Ramunas Levinas, Dijana Simkunaite, Loreta Tamasauskaite-Tamasiunaite, Eugenijus Norkus

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: graphitic carbon nitride; silver nanocubes; cobalt ferrite; polyol method; hydrogen and oxygen evolution

Online: 1 August 2023 (08:31:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.2130.v1

Redox Chemistry of Pt(II) Complex with Non-Innocent NHC Bis(phenolate) Pincer Ligand: Electrochemical, Spectroscopic and Computational Aspects

Ilya K. Mikhailov, Zufar N. Gafurov, Alexey A. Kagilev, Vladimir I. Morozov, Artyom O. Kantyukov, Ekaterina Zueva, Gumar R. Ganeev, Ilyas F. Sakhapov, Asiya V. Toropchina, Igor A. Litvinov, Galina A. Gurina, Alexander A. Trifonov, Oleg G. Sinyashin, Dmitry G. Yakhvarov

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cyclic voltammetry; electron paramagnetic resonance; DFT calculations; UV-VIS/NIR; phenoxyl radical; pincer complex; platinum complex; NHC ligand

Online: 1 August 2023 (03:38:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1965.v1

Rapidly Transforming PTFE from Hydrophobic to Hydrophilic through Plasma Treatment

Shakila Parveen Asrafali, Thirukumaran Periyasamy, Seong-Cheol Kim

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: PTFE; plasma treatment; active gas; N2 gas; surface modification

Online: 28 July 2023 (08:00:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1866.v1

Study on Low Thermal-Conductivity of PVDF@SiAG/PET Membranes for Direct Contact Membrane Distillation Application

Jun Xiang, Sitong Wang, Nailin Chen, Xintao Wen, Guiying Tian, Lei Zhang, Penggao Cheng, Jianping Zhang, Na Tang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: non-solvent induce phase separation; hydrophobic/hydrophilic membrane; silica aerogel; low thermal-conductivity; membranes distillation

Online: 27 July 2023 (07:26:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1258.v1

Characterization and Catalytic Performance of Al-SBA-15 Catalyst Fabricated Using Ionic Liquids with High Aluminum Content

Obaid F. Aldosari, Hassan Hassan, Mosaed S. Alhumaimess, Mohamed A. Betiha, Emad A. Ahmed, Laila M. Alhaidari, Afnan Altwala

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Al-SBA-15; Mesoporous; ethylenediamine; trimethylamine; ionic liquid; Esterification reaction

Online: 19 July 2023 (03:10:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1025.v1

Rapid-Test Kit Creation of Cardiac Troponin I, A Reliable Biosensor for Naked-Eye Detection Method in Daily Usage and Pharmacokinetic Studies for myocardial Infarction, Systemic Amyloidosis, and Cardiovascular Disease

Yu-Fang Hsieh, Kuan-Jiuh Lin

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: cardiovascular disease; myocardial infarction; cardiac troponin I; rapid-test kit; pharmacokinetic; systemic amyloidosis; ELISA

Online: 14 July 2023 (15:25:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0866.v1

Effortless One-Pot Two-Step Creation of NiS-NiO/S-g-C3N4: The Next Generation Photocatalyst for Green C(sp3)-F Bond Activation and Coenzyme Regeneration

Sanjana Kumari, Rajesh K. Yadav, Satyam Singh, Rehana Shahin, Suresh Kumar Pandey, Kamini Singh, Atul Partap Singh, Navneet Kumar Gupta, Dhanesh Tiwary, D. K. Dwivedi

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: NiS-NiO/S-g-C3N4 photocatalyst 1; C(sp3)-F Bond Activation 2; Regeneration of Coenzyme 3; Solar Light 4; Selectfluor 5

Online: 13 July 2023 (12:20:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0091.v1

A Novel Adsorbent Prepared by Aluminum-Containing Waste Residue and Its Application for Congo Red Wastewater Decolorization

Zhang Longfei, Han Xiaogang, Mu Jinxin

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: modified; aluminum containing waste; Congo red; adsorption; wastewater

Online: 4 July 2023 (03:23:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0037.v1

New Janus Tricyclic Laddersiloxanes: Synthesis, Characterization and Reactivity

Yujia Liu, Midori Tokuda, Nobuhiro Takeda, Armelle Ouali, Masafumi Unno

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: tricyclic laddersiloxanes; Janus molecules; hydrosilylation; syn-type conformation; well-defined structures

Online: 4 July 2023 (02:31:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0031.v1

Lignin-Based ILs as Corrosion Inhibitors

Sharon Monaci, Daniela Minudri, Lorenzo Guazzelli, Andrea Mezzetta, David Mecerreyes, Maria Forsyth, Anthony Somers

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Ionic Liquids; Corrosion Inhibitors; Bio-based

Online: 4 July 2023 (02:23:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.2118.v1

High Performance Reversible Furan-Maleimide Resins Based on Furfuryl Glycidyl Ether and Bismaleimides

Jiawen Wang, Jixian Li, Jun Zhang, Shuyue Liu, Liqiang Wan, Zuozhen Liu, Farong Huang

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Diels-Alder reaction; furan-maleimide resin; thermally reversible cross-linking resins; high performance resin

Online: 30 June 2023 (02:37:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1222.v1

Heterogeneous Copper Catalysts in the Aqueous Phase Hydrogenation of Maltose to Sorbitol

Valeria Pappalardo, Federica Zaccheria, Nicola Scotti, Nicoletta Ravasio

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: copper catalysts; disaccharides; maltose; sorbitol; Cu on silica

Online: 16 June 2023 (10:38:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0643.v1

Spectral Characterization, Microscopic Images, and Antimicrobial Activity of Chenodeoxycholic Acid Complexes with Zn(II), Mg(II), and Ca(II) Ions

Abdulrahman A. Almehizia, Mohamed A. Al-Omar, Ahmed M. Naglah, Mashooq A. Bhat, Fhdah S. Alanazi, Fatimah A. Alotaibi, Moamen S. Refat, Abdel Majid A. Adam

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Chenodeoxycholic acid; Metal-based complex; Spectroscopy; Microscopic images; Antimicrobial test

Online: 8 June 2023 (11:28:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0305.v1

Preparation, Characterization, and In Vitro Evaluation of the Biological Activity of Several Metal-Based Complexes with Two Widely Used Fluoroquinolones Antibiotics: Lomefloxacin and Pefloxacin Drugs

Abdulrahman A. Almehizia, Mohamed A. Al-Omar, Ahmed M. Naglah, Mashooq A. Bhat, Razan Eskandrani, Fatimah A. Alotaibi, Moamen S. Refat, Abdel Majid A. Adam

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Fluoroquinolones; Lomefloxacin; Pefloxacin Metal-based complex; Spectroscopies; Biological activities

Online: 5 June 2023 (10:22:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0249.v1

Complexes of the Antibiotic Drug Oxolinic Acid with the Fe(III), Zn(II), Ca(II), and Mg(II) Ions: Preparation, Characterization, and In Vitro Evaluation of the Biological Activity

Abdulrahman A. Almehizia, Mohamed A. Al-Omar, Ahmed M. Naglah, Mashooq A. Bhat, Fhdah S. Alanazi, Fatimah A. Alotaibi, Moamen S. Refat, Abdel Majid A. Adam

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Oxolinic acid; Metal-based complex; Spectroscopy; Microscopic characterization; Antimicrobial activity.

Online: 5 June 2023 (07:09:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0167.v1

1,2-Diphenyl-o-carborane and its Chromium Derivatives: Synthesis, Characterization, X-ray Structural Studies, and Biological Evaluations

Tae-Jin Ha, Dong-Kyung Im, Seung-Min Kim, Jong-Dae Lee

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 1,2-Diphenyl-o-carborane; Chromium Metal Complexes; Boron Neutron Capture Therapy; Biological Evaluation; Cytotoxicity

Online: 2 June 2023 (09:18:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0004.v1

Extracts from Cordyceps militaris: Novel, potential, and efficiently bioactive natural materials used for skin-care products

Hai-Vy Vo-Nguyen, Bach-Hue Thi Nguyen, Gia-Thu Do-Pham, And Thi Xuan Thi Luu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Cordyceps militaris extract; skin-care product; natural preservatives; antioxidant; stability

Online: 1 June 2023 (02:47:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1912.v1

Oxygen Vacancy-Rich Fe@Fe₃O₄ Boosting Fenton Chemistry

Rongwei Zheng, Ruifan Tan, Yali Lv, Xiaoling Mou, Junqiao Qian, Ronghe Lin, Ping Fang, Weidong Kan

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Advanced oxidation process; Core-shell structure; Fenton chemistry; Fe@Fe3O4 interface; Methyl orange decomposition; Oxygen vacancy

Online: 26 May 2023 (10:05:52 CEST)

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Chemistry and Materials Science