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Preprint ARTICLE | doi:10.20944/preprints202404.1255.v1

The Role of the Unbinding Cycle on the Coordination Abilities of the Bi-Cyclopeptides Toward Cu(II) Ions

Alicja Lisowska, Paulina Swiatek, Filip Debicki, Agniezska Lewinska, Aleksandra Marciniak, Lorenzo Pacini, Anna Maria Papini, Justyna Brasun

Subject: Chemistry And Materials Science, Other Keywords: bi-cyclopeptide; histidine; metal complex; copper ions; stability constant; spectroscopic studies

Online: 18 April 2024 (14:10:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1247.v1

Beta-Cyclodextrin Molecules (β‐CD) Modified PVDF Membranes to Remove Multi-Ionic Dye Solutions using Steric, Inclusion, and Dielectric Exclusion

Wadha Alrashedi, Hafedh Ben KOCHKAR, Ismail Ercan

Subject: Chemistry And Materials Science, Biomaterials Keywords: β ‐cyclodextrin; hydrophilicity; PVDF membrane; Dye separation; dielectric exclusion

Online: 18 April 2024 (14:07:48 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.1197.v1

Some Recent Advances on Germanium Recovery from Various Resources

Francisco Jose Alguacil, Jose Ignacio Robla

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: germanium; recovery; leaching; liquid-liquid extraction; adsorption; ion exchange ;

Online: 18 April 2024 (14:04:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1187.v1

Effect of Cetyl Pyridinium Chloride on Corrosion Inhibition Properties of Mild Steel in Acidic Medium

Chandradip Kumar Yadav, Shova Neupane, Benadict Rakesh, Amar Prasad Yadav, Tulasi Prasad Niraula, Ajaya Bhattarai

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: FTIR; FESEM; EDX; inhibitor; mild steel; cetyl pyridinium chloride

Online: 18 April 2024 (13:39:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1185.v1

Preparation and Properties of a Novel Nylon 6 Co-polymerized by ε-Caprolactam and α-Amino-ε-Caprolactam

Xiaoyu Mao, Wei Liu, Shan Mei, Zeyang Li, Baoning Zong

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: Hydrolysis open-ring polymerization; Modified branched PA6; Thermal properties; Rheological properties; Mechanical properties

Online: 18 April 2024 (12:23:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1205.v1

Physical and Mechanical Analysis of Fiberboard Made Of MDF Residues and Phase Change Materials

Gustavo E. Rodríguez, Cecilia Bustos Ávila, Alain Cloutier

Subject: Chemistry And Materials Science, Paper, Wood And Textiles Keywords: MDF residues; fiberboard; PCMs; physical-mechanical properties; thermal energy storage

Online: 18 April 2024 (08:05:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1208.v1

Cellulose, Rice Husk and Polyvinyl Acetate-Based Composite: Flame Retardancy and Fungi Growth Experimental Study

Sergio González-Serrud, Nacarí Marín-Calvo

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: recycled cellulose; rice husk waste; fire resistance; fungal growth; water absorption; density; natural fibers; resource sustainability; building sustainability

Online: 18 April 2024 (07:51:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1206.v1

Soluble Fluorinated Cardo Copolyimide as an Effective Additive to Photopolymerizable Compositions Based on Di(meth)acrylates: Application for Highly Thermostable Primary Protective Coating of Silica Optical Fiber

Dmitriy A. Sapozhnikov, Оlga A. Melnik, Alexander V. Chuchalov, Roman S. Kovylin, Sergey A. Chesnokov, Dmitry A. Khanin, Galina G. Nikiforova, Alexey F. Kosolapov, Sergey L. Semjonov, Yakov S. Vygodskii

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: UV photopolymerization; di(meth)acrylates; polyimide; protective coating; silica орtical fiber; high thermal stability

Online: 18 April 2024 (07:51:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1104.v1

Effect of Carbon on Void Nucleation in Iron

Lin Shao

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: void; swelling; nucleation; iron; carbon; defect

Online: 18 April 2024 (02:43:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1163.v1

A Study on the Application Performance of High-Aspect-Ratio Nano-Ettringite in Photocurable Resin Composites

Weihua Cao, Hong Zhu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: nano-ettringite; photocurable resin; viscosity; shrinkage; tensile strength

Online: 17 April 2024 (15:07:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1094.v1

An Uplifting Avenue upon Mealworm Chitosan for Hemodialysis Application

Maria Martingo, Sara Baptista-Silva, Raquel Mesquita, João Paulo Ferreira, Sandra Borges, Manuela Pintado

Subject: Chemistry And Materials Science, Biomaterials Keywords: Tenebrio molitor; chitosan; bio-based membrane; hemodialysis treatment

Online: 17 April 2024 (14:57:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.1157.v1

Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State-of-the-Art, Review and Outlook

Peter Kurzweil, Wolfgang Scheuerpflig, Christian Schell, Josef Schottenbauer

Subject: Chemistry And Materials Science, Electrochemistry Keywords: capacitance; state-of-charge (SOC) determination; state-of-health (SOH); aging; lithium-ion battery; supercapacitor; impedance; life testing; battery capacity

Online: 17 April 2024 (13:31:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1150.v1

Interactions Between Cetyltrimethylammonium Bromide Modified Cellulose Nanocrystals and Surfaces: An Ellipsometric Study

Xiaoyu Gong, Md Farhad Ismail, Yaman Boluk

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: Cellulose nanocrystals; cetyltrimethylammonium bromide; ellipsometry

Online: 17 April 2024 (13:27:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1160.v1

Fabrication of Loose Nanofiltration Membrane by Crosslinking TEMPO-Oxidized Cellulose Nanofibers for Effective Dye/Salt Separation

Shasha Liu, Mei Sun, Can Wu, Kaixuan Zhu, Ying Hu, Meng Shan, Meng Wang, Kai Wu, Jingyi Wu, Zongli Xie, Hai Tang

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: Tempo-oxidized cellulose nanofibers; Nanofiltration membrane; Dye/salt separation

Online: 17 April 2024 (13:22:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1135.v1

Microstructure and Texture Evolution in Cold‐Rolled and Annealed Oxygen‐Free Copper Sheets

Jing Qin, Xun Li, Dongsheng Wang, Chen Zhou, Tongsheng Hu, JingWen Wang, Youwen Yang, Yujun Hu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: microstructure; texture; copper sheet; rolling reduction; annealing twin

Online: 17 April 2024 (11:57:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1152.v1

Synthesis, Activity, Toxicity, and In Silico Studies of New Antimycobacterial N-alkyl Nitrobenzamides as Potential DprE1 Inhibitors

João Pedro Pais, Olha Antoniuk, David Pires, Tiago Delgado, Andreia Fortuna, Paulo J Costa, Elsa Anes, Luis Constantino

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: Tuberculosis; nitrobenzamides; DprE; mycobacteria

Online: 17 April 2024 (11:50:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1131.v1

The Effect of Ageing on Phase Transformations and Nanoindentation Behaviour in Ni-Rich NiTi Alloys

Jerzy Ratajski, Blażej Bałasz, Katarzyna Mydłowska, Mieczysław Pancielejko, Łukasz Szparaga

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: NiTi; phase transformation; additive manufacturing; SLM; solution annealing; aging

Online: 17 April 2024 (11:46:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1092.v1

Visible Light Up-conversion of Bio-Carbon Quantum-Dot-Decorated TiO2 for Naphthalene Removal

Yunteng Chen, Chunxian Hong, Qiang Xu, Haihong Zheng, Chao Wang, Hongshun Lu, Shuai Zhang, Mingming Du, Ganning Zeng

Subject: Chemistry And Materials Science, Biomaterials Keywords: Carbon quantum dots; TiO2; Photodegradation; Naphthalene

Online: 17 April 2024 (11:25:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1124.v1

Swelling, Rupture and Endosomal Escape of Biological Nanoparticles per se and Those Fused with Liposomes in Acidic Environment

Natalia Ponomareva, Sergey Brezgin, Ivan Karandashov, Anastasiya Kostyusheva, Polina Demina, Olga Slatinskaya, Ekaterina Bayurova, Denis Silachev, Vadim Pokrovskyy, Vladimir Gegechkori, Evgeny Khaydukov, Georgy Maksimov, Anastasia Frolova, Ilya Gordeychuk, Andrey A. Zamyatnin, Vladimir Chulanov, Alessandro Parodi, Dmitry Kostyushev

Subject: Chemistry And Materials Science, Nanotechnology Keywords: exosomes; proton sponge; RNA; CRISPR/Cas; small molecules; cancer; gene editing; vaccines; biological barriers; nanoparticle-tracking assay; dynamic light scattering

Online: 17 April 2024 (08:40:29 CEST)

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Biological nanoparticles (NPs), such as extracellular vesicles (EVs), exosome-mimetic nanovesicles (EMNVs) and nanoghosts (NGs), are perspective non-viral delivery vehicles for all types of therapeutic cargo. Biological NPs are renowned for their exceptional biocompatibility and safety, alongside their ease of functionalization, but a significant challenge arises when attempting to load therapeutic payloads, such as nucleic acids (NAs). One effective strategy involves fusing biological NPs with liposomes loaded with NAs, resulting in hybrid carriers that offer the benefits of both biological NPs and the capacity for high cargo loads. Despite their unique parameters, one of the major issues of virtually any nanoformulation is the ability to escape degradation in the compartment of endosomes and lysosomes which determines the overall efficiency of nanotherapeutics. In this study, we fabricated all major types of biological and hybrid NPs and studied their response to acidic environment observed in endolysosomal compartment. In this study, we show that EMNVs display increased protonation and swelling relative to EVs and NGs in an acidic environment. Furthermore, the hybrid NPs exhibit an even greater response compared to EMNVs. Short-term incubation of EMNVs in acidic pH corresponding to late endosomes and lysosomes again induces protonation and swelling, whereas hybrid NPs are ruptured, resulting in the decline of their quantities. Our findings demonstrate that in an acidic environment, there is enhanced rupture and release of vesicular cargo observed in hybrid EMNVs that are fused with liposomes compared to EMNVs alone. This was confirmed through PAGE electrophoresis analysis of mCherry protein loaded into nanoparticles. In vitro analysis of NPs colocalization with lysosomes in HepG2 cells demonstrated that EMNVs mostly avoid endolysosomal compartment whereas hybrid NPs escape it over time. To conclude, (1) hybrid biological NPs fused with liposomes appear more efficient in the endolysosomal escape via the mechanism of proton sponge associated with scavenging of protons by NPs, influx of counterions and water, and rupture of endo/lysosomes, but (2) EMNVs are much more efficient than hybrid NPs in actually avoiding endolysosomal compartment in human cells. These results reveal biochemical differences across four major types of biological and hybrid NPs, and indicate that EMNVs are more efficient in escaping or avoiding endolysosomal compartment.

Preprint ARTICLE | doi:10.20944/preprints202404.1064.v1

Lubricating Greases from Fried Vegetable Oils

Olga Valerica Săpunaru, Ancaelena Eliza Sterpu, Cyrille Alode Vodounon, Jack Nasr, Cristina Duşescu-Vasile, Sibel Osman, Claudia Irina Koncsag

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: renewable materials; lubricating greases; rheological properties; additivated greases

Online: 16 April 2024 (17:06:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1059.v1

Advanced Voltametric Characterization of Polyphenols in Wine Using a Modified Carbon Paste Electrode with TiO₂ Nanoparticles

Saša Mićin, Nadica Ivošević DeNardis, Sanja Martinez, Vedrana Špada, Borislav N. Malinović

Subject: Chemistry And Materials Science, Electrochemistry Keywords: amperometric sensor; carbon electrode; polyphenols; TiO2 nanoparticles; voltammetry

Online: 16 April 2024 (15:45:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1012.v1

A New Quinazolinone Alkaloid from Rhodiola tibetica Endophytic Fungus Penicillium sp. HJT-A-6

Dongliang Xiao, Yan Wang, Congcong Gao, Xuemei Zhang, Weixing Feng, Xuan Lu, Baomin Feng

Subject: Chemistry And Materials Science, Other Keywords: Rhodiola tibetica; Penicillium sp. HJT-A-6, quinazolinone, seed-germination-promoting activity

Online: 16 April 2024 (11:02:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1039.v1

Supramolecular Assemblies in Mn(II) and Zn(II) Metal-Organic Compounds Involving Phenanthroline and Benzoate: Experimental and Theoretical Studies

Mridul Boro, Subham Banik, Rosa M. Gomila, Antonio Frontera, Miquel Barceló-Oliver, Manjit K. Bhattacharyya

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: metal-organic compounds; supramolecular dimer; self-association; DFT; QTAIM; MEP

Online: 16 April 2024 (10:54:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1004.v1

Spectroscopic Study of a Novel Binaphthyl Amine Fluorescent Probe for Chiral Recognition of DL-Lysine

Liji Wu, Xiangyu Lu, Wentao Cai, Yajun Zou, Xiaoyu Zhang, Jialiang Yang, Gang Zhao

Subject: Chemistry And Materials Science, Other Keywords: Lysine Chiral Recognition; BINAM-based Fluorescent Probes; Enantioselectivity; Fluorescence Analysis

Online: 16 April 2024 (09:26:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0995.v1

Dynamics of Halogen Molecule Vibrations in Molecular Crystals: Temperature and Halogen Dependency

Boris A. Kolesov

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: halogens; chemical bonding; halogen bonding; Raman spectroscopy

Online: 16 April 2024 (07:31:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0992.v1

Efficient Quality Control of Peptide Pools

Gaby Bosc-Bierne, Shireen Ewald, Oliver J. Kreuzer, Michael G. Weller

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: peptide pools; quality control; UHPLC-UV-HRMS; relative quantification; substance confirmation; structure; cost efficiency; CEF; infectious diseases; orbitrap

Online: 15 April 2024 (14:56:29 CEST)

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Abstract: Peptide pools composed of short amino acid sequences have proven to be versatile tools in various research areas and clinical applications. They are powerful tools for epitope mapping, immunotherapy, and vaccine development. Their importance lies in their ability to map complex protein structures, enabling a comprehensive understanding of immune responses and facilitating the identification of potential therapeutic agents. The application of peptide pools also extends to the field of personalized medicine, offering tailored solutions for diseases such as cancer and infectious diseases. Peptide pools are complex mixtures of immunostimulatory antigens primarily intended for T-cell stimulation. They are commercially available in many different compositions and variants. However, unlike other reagents that consist of only one or a few compounds, peptide pools are highly complex products with limited stability. This makes their quality control a major challenge. Quantitative peptide analysis usually requires sophisticated methods, in most cases isotope-labeled standards and reference materials. None of these are routinely available for these products. Synthesis and purification of all labeled peptides might be required. Usually, this approach would be prohibitively laborious and expensive. Therefore, an approach is needed to provide a practical and feasible method for quality control of peptide pools. With insufficient quality control, the use of such products could lead to incorrect experimental results, which would worsen the well-known reproducibility crisis in the biomedical sciences. Here we propose the use of ultra-high performance liquid chromatography (UHPLC) with two detectors, a standard UV detector (at 214 nm) for quantitative analysis and a high-resolution mass spectrometer (HRMS) for identity confirmation. To be cost-efficient and fast, quantification and identification are performed in one chromatographic run. An optimized protocol is shown, and different peak integration methods are compared and discussed. This work was performed using a peptide pool known as CEF, which consists of 32 peptides derived from cytomegalovirus (CMV), Epstein-Barr virus (EBV) and influenza virus, ranging from 8 to 12 amino acids in length.

Preprint REVIEW | doi:10.20944/preprints202404.0991.v1

Rethinking the Esterquats: Synthesis, Stability, Ecotoxicity and Applications of Esterquats Incorporating Analogs of Betaine or Choline as the Cation in Their Structure

Marcin Wysocki, Witold Stachowiak, Mikołaj Smolibowski, Adriana Olejniczak, Michał Niemczak, Julia L. Shamshina

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Quaternary Ammonium Salts; Cleavable Compounds; Esters; Environmental Safety; Cationic Surfactants; Biological Activity

Online: 15 April 2024 (14:53:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0979.v1

Electro-Coloring Mechanism of Aluminum Anodic Oxides in Tin Based Electrolytes

Pinar Afsin, Can Akyil, Kürşat Kazmanlı, Mustafa Ürgen

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Aluminum; anodization; electrocoloring; tin; XPS:

Online: 15 April 2024 (13:22:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0876.v1

Irradiation Characteristics of Non-impregnated Micropore Graphite for Use in Molten Salt Nuclear Reactors

Pengfei Lian, Pengda Li, Hefei Huang, Jinliang Song, Zhongfeng Tang, Zhanjun Liu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: non-impregnated graphite; irradiation performance; microstructure; defect evolution; molten salt reactor

Online: 15 April 2024 (11:40:07 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0894.v1

Unstable Metal Hydrides for Possible on-Board Hydrogen Storage

Zhijie Cao, Franziska Habermann, Konrad Burkmann, Michael Felderhoff, Florian Mertens

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: hydrogen storage; metal hydrides; intermetallic compounds; complex hydrides

Online: 15 April 2024 (08:40:46 CEST)

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Hydrogen storage in general is an indispensable prerequisite for the introduction of a hydrogen energy based infrastructure. In this respect, high-pressure metal hydride (MH) tank systems appear to be one of the most promising hydrogen storage techniques for automotive applications using proton exchange membrane (PEM) fuel cells. These systems bear the potential of achieving a beneficial compromise of comparably large volumetric storage density, a wide working temperature range, comparably low liberation of heat, and increased safety. The debatable term unstable metal hydride stands in the literature short for metal hydrides with high dissociation pressure at comparably low temperature. Such compounds may help to improve the merit of high-pressure MH tank systems. Consequently, in the last few years, some materials for possible on-board applications in such tank systems have been developed. This review summarizes the state-of-the-art developments of these metal hydrides, mainly including intermetallic compounds and complex hydrides and gives some guidelines for future developments. Since typical laboratory hydrogen uptake measurements are limited to 200 bar, a possible threshold for defining unstable hydrides could be a value of their equilibrium pressure of peq > 200 bar for T < 100°C. However, these values would mark a technological future target and most current materials, and those reported in this review, do not fulfill these requirements and need to be seen as current stages of development towards the intended target. For each of the aforementioned categories in the review, special care was taken not only to covers the pioneering and classical research, but also to portrait the current status and latest advances. For intermetallic compounds, key aspects focus on the influence of partial substitution on absorption/desorption plateau pressure, hydrogen storage capacity and hysteresis properties. For complex hydrides, the preparation procedures, thermodynamics and theoretical calculation are presented. Besides, challenges, perspectives, and development tendency of this field are also discussed.

Preprint ARTICLE | doi:10.20944/preprints202404.0871.v1

Typification of Green Coffee and Selected Spices Based on the Analysis of Volatile Compounds and Supervised Learning

Dimitrios G Lazaridis, Evelyna K Kokkosi, Emmanouela N Mylonaki, Vassilios K Karabagias, Nikolaos D Andritsos, Ioannis K Karabagias

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Green coffee; spices; volatile compounds; supervised learning; typification

Online: 15 April 2024 (08:06:04 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0865.v1

Radical Cyclization-initiated Difunctionalization Reactions of Alkenes and Alkynes

Sanjun Zhi, Xiaoming Ma, Wei Zhang

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: radical; difunctionalization; atom transfer; cyclization; coupling; addition

Online: 15 April 2024 (08:01:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0916.v1

Biochar from Lignocellulosic Biomass: The Importance of Physicochemical Characterization and Multi-Criteria Decision Analysis for Its Applications

Rafael Benjamin Evaristo, Romulo C Dutra, Paulo Anselmo Suarez, Grace Ferreira Ghesti, Edgar Silveira

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: biochar; pyrolisis; thermochemical process; characterization; biomass

Online: 15 April 2024 (07:28:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0888.v1

On the Durability Performance of Two Adhesives to Be Used in Bonded Secondary Structures for Offshore Wind Installations

Khaoula Idrissa, Aurelien Maurel-Pantel, Frédéric Lebon, Noamen Guermazi

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Adhesives; Thermal aging; Hygrothermal aging; Durability; Mechanical properties

Online: 15 April 2024 (04:57:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0863.v1

Effect of Tacticity on London Dispersive Surface Energy, Polar Free Energy, and Lewis Acid-Base Surface Energies of Poly Methyl Methacrylate by Inverse Gas Chromatography

Tayssir Hamieh

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: PMMA tacticity; London dispersive surface energy; Lewis’ s acid-base parameters, transition temperatures; intermolecular separation distance; acid-base surface energy

Online: 14 April 2024 (17:11:14 CEST)

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This research was devoted to study the effect of the tacticity of PMMA on the surface physicochemical properties such as the London dispersive component of the surface energy of the polymer, the polar and dispersive free energies, the Lewis’s acid-base surface parameters, and the Lewis acid and base surface energies of atactic, isotactic and syndiotactic PMMAs as a function of the temperature. Inverse gas chromatography (IGC) at infinite dilution was used to determine the surface thermodynamic properties of PMMA at different tacticities. The experimental values of the net retention time and volume of model organic molecules adsorbed on the atactic, isotactic and syndiotactic PMMAs, were obtained by IGC technique at infinite dilution. The London dispersion interaction energy was used for the separation of the polar and dispersive energy of the different n-alkanes and polar solvents adsorbed on the different PMMA surfaces. The London dispersive surface energy γ_s^d (T) of PMMAs was determined by applying the Hamieh thermal model that took into account the effect of the temperature on the surface area of adsorbed molecules. The obtained results showed non-linear variations of γ_s^d (T) of atactic, isotactic, and syndiotactic PMMAs with three maxima characterizing the three transition temperatures of PMMAs, T_g, T_g and T_(liq-liq) with a shift of these temperatures with the isotactic and syndiotactic PMMAs. It was showed that the polar interaction free energy ∆G_a^p (T) also showed the presence of the three above transition temperatures of the polymers. The study showed an important non-linearity variation of the different acid-base parameters in the various polymer surfaces proving the highest effect of the temperature and the tacticity on these parameters. The determination of the enthalpic and entropic Lewis’s acid-base parameters showed an amphoteric character for the different PMMAs. The basicity of the atactic PMMA was about four times larger than its acidity outside the neighborhood of the transition temperatures of the polymer. Whereas, the isotactic PMMA was about 2 to 2.5 times more basic than acid, while the syndiotactic PMMA exhibited the highest basicity by showing a surface 5 to 8 times more basic than acid. However, the Lewis acid-base parameters strongly depended on the temperature and sudden variations of these surface parameters were observed around the transition temperatures largely depending on the PMMA tacticity. The determination of the polar acid and base surface energies of the three PMMAs led to the same previous transition temperatures with an important effect of the tacticity of PMMA on the values of these acid-base surface energies.

Preprint REVIEW | doi:10.20944/preprints202404.0858.v1

Recent Advances towards Catalytic Compounds Developed by Thermal Treatment of Metal-Organic Frameworks

Catarina E. S. Ferreira, Salete S. Balula, Luís Cunha-Silva

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Metal-organic frameworks (MOFs); MOF-derivative compounds; thermal treatment; structure defects; sustainable catalytic processes

Online: 12 April 2024 (14:59:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0853.v1

Preparation of a Water-Soluble Aminated Lignin and Its Structure Analysis

Qi Zheng, Zai Guang Nong, Ning Li

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: lignin; ammonia; aminated lignin

Online: 12 April 2024 (14:40:53 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0840.v1

Tailored Viral-Like Particles as Drivers of Medical Breakthroughs

Rafael Travassos, Sofia A. Martins, Ana Fernandes, João D. G. Correia, Rita Melo

Subject: Chemistry And Materials Science, Nanotechnology Keywords: nanoparticles; virus-like particles; surface functionalization; biomedical applications

Online: 12 April 2024 (10:03:49 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202404.0833.v1

Convenient Preparation, Thermal Properties and X-Ray Structure Determination of 2,3-Dihydro-5,6,7,8-tetranitro-1,4-benzodioxine (TNBD): a Promising High Energy Density Material (HEDM)

Jonas Šarlauskas

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 1,4-benzodioxane; nitration; nitro derivatives; tetranitro; synthesis; X-ray crystallography; structure; thermal analysis; high energy high density material (HEDM)

Online: 12 April 2024 (08:03:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0760.v1

Optimization of Composite Enzymatic Extraction, Structural Characterization and Biological Activity of Soluble Dietary Fiber from Akebia trifoliata Peel

Ya Song, Guoshun Sun, Dian Wang, Jin Chen, Jun Lv, Sixia Jiang, Guoqiang Zhang, Shirui Yu, Huayan Zheng

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Akebia trifoliata; soluble dietary fiber; extraction; structure; antioxidant activity; functional properties

Online: 11 April 2024 (14:02:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0808.v1

Quasi-solid Composite Electrolytes of Poly-(Dioxolane) & Garnet LLZO Nanofibers Enable High Energy Efficiency Lithium-Metal Batteries

Zhengqiang Li, David R. Salem

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Gel-electrolytes, Lithium-metal battery, Lithium dendrites, c-LLZO nanofiber

Online: 11 April 2024 (11:48:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0675.v2

Green Synthesis of novel Rhododendron arboreum Based Zinc Nanocomposites for Enhanced Antimicrobial and Photocatalytic Degradation Activities

Sajid Ali, Sidra -, Tanveer Asghar, Muhammad Ishtiaq Jan, Muhammad Waqas, Tahir Ali, Riaz Ullah, Ahmed Bari

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Rhododendron arboreum; Zinc nanoparticles; Antimicrobial activity; Photocatalyst; Methyl orange dye

Online: 11 April 2024 (11:15:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0783.v1

Analysis of Inclusions and Impurities Present in Typical Hpdc, Stamping and Extrusion Alloys Produced with Different Scrap Levels

Manel Da Silva, Jaume Pujante, Joanna Hrabia-Wisnios, Boguslaw Augustyn, Dawid Kapinos, Mateusz Węgrzyn, Sonia Boczkal

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: aluminium alloys; recycling; impurities; flowability; casting

Online: 11 April 2024 (09:29:16 CEST)

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The European Green Deal poses a two-pronged challenge for the automotive industry: migrating to solutions based in light structures, requiring light weight concepts and light materials, while at the same time avoiding dependence towards the importation of these advanced materials. Aluminium alloys are lightweight and cost-effective materials that can successfully cover the requirements of many structural applications, however their production requires from bauxite and other Critical Raw Materials (CRM), such as Si and Mg. Aluminium alloys are fully recyclable, but scrap is usually contaminated and its use is related to an increment of impurities, tramp element and undesired inclusions. Traditionally, the use of secondary alloys has been restricted to low performance applications. The present work analyses the effect that the use of scrap has in the quantity of inclusions present in the alloy and in other properties relevant for the material processing. The study was carried out for common alloys belonging to 3 of the most common aluminium processes used in the car manufacturing industry: High Pressure Die Casting (HPDC) (EN AC-43500), extrusion (6063) and sheet metal forming (5754 and 6181). Reference alloy were mixed with different level of scrap (0, 20, 40, 60, 80 and 100%) trying to keep the chemical composition as unaffected as possible. The inclusions level of the alloy was characterized with the Prefil Foot-printer® test. In addition, the obtained materials, after being cast in an open mould, were subjected to metallographic characterization. Relevant properties to assess the formability quality of the alloys for the corresponding transforming process, were obtained: flowability test for HPDC alloy and high temperature compression for extrusion alloys. The results obtained suggest that the number of inclusions present in the melt highly increase with the amount of scrap used to produce the alloy. These inclusions are also related with an important lost of flowability, but do not have a noticeable impact on microstructure.

Preprint ARTICLE | doi:10.20944/preprints202404.0720.v1

Heat-Annealed Zinc Oxide on Carbon Nanotube Paper and Exposed to Gradient Light to Enhance Its Photoelectric Response

JIH-HSIN LIU, PI-YU SHEN

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Carbon Nanotube Paper; bucky paper; Zinc Oxide; rapid thermal annealing; photovoltaic response

Online: 11 April 2024 (04:10:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0729.v1

Fabrication of Anti-fatigue Double-Wrapped Yarns With Excellent Mechanical Properties for Generating Compression Fabrics

Qian Zhang, Jiaqi Chen, Ziqin He, Wenfu Liu, Andreii S. Kritchenkov, Lu Wang, Wanjun Liu, Jing Gao

Subject: Chemistry And Materials Science, Paper, Wood And Textiles Keywords: Double-wrapped yarns; Anti-fatigue properties; Manufacturing parameters; tensile property; Weft-knitted fabrics; Compression garments

Online: 11 April 2024 (04:06:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0745.v1

Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer, to Enhance the Physicochemical Properties and Processibility

Soufiane Boudjelida, Xue Li, Souad Djellali, Giampiero Chiappetta, Francesca Russo, Alberto Figoli, Mauro Carraro

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: starch; polyaniline; Stabilizer; Composites; Conductive Colloids

Online: 11 April 2024 (04:05:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0743.v1

Cotton Fabric-Reinforced Hydrogels with Excellent Mechanical and Broad-Spectrum Photothermal Antibacterial Properties

Xiangnan Yuan, Jun Zhang, Jiayin Shi, Wenfu Liu, Andreii S. Kritchenkov, Sandra Van Vlierberghe, Lu Wang, Wanjun Liu, Jing Gao

Subject: Chemistry And Materials Science, Biomaterials Keywords: Cotton fabric; Reinforced hydrogel; Photothermal therapy; Mechanical properties; Antibacterial properties

Online: 10 April 2024 (15:48:13 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0402.v2

A Novel Superconducting Mechanism Derived from Room Temperature Superconductivity in Thorium Salts

Dong Zhao, George Jin Zhao

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Superconducting mechanism; room temperature superconductors; electron parings; network for electron pairs; thorium deregulation

Online: 10 April 2024 (12:55:41 CEST)

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An innovative superconducting mechanism was developed based on a patented discovery of room temperature superconductivity in several thorium (Th) salts or compounds. The rationale behind this discovery is through the experimental results about the unique electronical and magnetic properties of these Th salts. Accordingly, this new superconducting mechanism for these Th salts was obtained through the analyses of the compounds’ molecular configurations and the packings of their relevant crystal structures. Owing to the distinctive properties of the Th compounds in this discovery, we further established a different electron pairing scheme as opposed to the pairing of the Cooper pairs. Compared to the long distance electron pairing of the Cooper pairs, the new electron pairing in our mechanism is constructed by two closely correlated electrons that reside on the same atomic orbital of the Th cation as an electron lone pair. In this new superconducting mechanism, the Th cation is sitting on a relevant crystallographic lattice arrangement or a network of the relevant Th compounds. This network is constructed by many Th cations along certain crystallographic lattice arrangement where each Th cation contains one electron lone pair. This network allows the electron lone pairs on the Th cations to be delocalized over the network, “in pair”, and thus, reveals the electron lone pair in presence in a long distance fashion. The closely correlated electron lone pairs hop on this network and thus construct the supercurrent over the network. This explanation about the superconductivity laid the basis for our superconducting mechanism. All these conclusions came from the previous studies about these compounds that illustrated their unusual features of a coexistence of high electrical conductivity and diamagnetism. These electrical and magnetic properties fall in line with that of superconductors but, surprisingly, these Th compounds have such properties at the ambient condition, meaning under room temperature and atmosphere pressure. We expect that this mechanism may be appropriate to be utilized to other superconducting cases and therefore, can be adapted to describe the superconducting phenomenon for other superconductors.

Preprint ARTICLE | doi:10.20944/preprints202404.0695.v1

A Low-Cost Structurally Simple Triboelectric Nanogenerator Based on Fullerene Carbon Soot Doped Polydimethylsiloxane Composite Film

Shujie Yang, Wen Zhao, Oleg Tolochko, Tatiana Larionova

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Triboelectric nanogenerator (TENG); Fullerene soot (FS); Nanomaterials

Online: 10 April 2024 (11:02:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0675.v1

Green Synthesis of novel Rhododendron arboreum Based Zinc Nanocomposites for Enhanced Antimicrobial and Photocatalytic Degradation Activities

Sajid Ali, Sidra -, Tanveer Asghar, Muhammad Ishtiaq Jan, Muhammad Waqas, Riaz Ullah, Ahmed Bari

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Rhododendron arboreum; Zinc nanoparticles; Antimicrobial activity; Photocatalyst; Methyl orange dye

Online: 10 April 2024 (07:48:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0661.v1

A New Sustainable PPT Coating Based on Recycled PET to Improve the Durability of Hydraulic Concrete

A. Borquez-Mendivil, C.P. Barrios-Durstewitz, R.E. Núñez-Jaquez, A. Hurtado-Macías, J.E. Leal-Pérez, J. Flores-Valenzuela, B.A. García-Grajeda, F.G. Cabrera-Covarrubias, J.M. Mendivil-Escalante, J.L. Almaral-Sánchez

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: Sustainability; PPT coating; recycled PET; durability; hydraulic concrete

Online: 9 April 2024 (12:01:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0637.v1

A Study of Plant-Filled Polymer Composites Based on Highly Plasticized Polyvinyl Chloride

Evgenia Samuylova, Alina Ponomareva, Vera Sitnikova, Anton A. Zhilenkov, Olga Yu. Kichigina, Mayya Uspenskaya

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: composite; plastic materials; polyvinyl chloride; plant fillers; fabrication method; film characteristics

Online: 9 April 2024 (10:31:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0645.v1

Simple Method to Enhance the Molecular Weight of Polyfurfuryl Alcohol Resin Using A Straightforward Co-Catalytic System

Austine Ofondu Iroegbu, Reinout Meijboom

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: defossilization; organic-inorganic co-catalysis; furans; furfuryl alcohol; polyfurfuryl alcohol

Online: 9 April 2024 (10:21:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0648.v1

Electrochemical Properties of Surfactants Modified Smectite Clays

Issaka Garikoé, Boubié Guel

Subject: Chemistry And Materials Science, Electrochemistry Keywords: organoclays; carbon paste electrode; carbon paste modified electrode; surfactants; cyclic voltammetry

Online: 9 April 2024 (10:15:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0618.v1

Materials and Methods for All-cellulose 3D Printing in Sustainable Additive Manufacturing

Isabel Albelo, Rachel Raineri, Sonja Salmon

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 3D printing; additive manufacturing; cellulose; sustainability

Online: 9 April 2024 (08:51:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0478.v1

New Pyranone Derivatives and Sesquiterpenoid Isolated from the Endophytic Fungus Xylaria sp. Z184

Yan Zhang, Yang Jin, Wensi Yan, Peishan Gu, Ziqian Zeng, Ziying Li, Guangtao Zhang, Mi Wei, Yongbo Xue

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Xylaria sp.; pyranone derivative; sesquiterpenoid; antimicrobial activity

Online: 8 April 2024 (16:42:40 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0558.v1

Unveiling the Influential Factors and Heavy Industrial Applications of Graphene Hybrid Polymer Composites

Zulfiqar Ali, Saba Yaqoob, Jinhong Yu, Alberto D'Amore

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Graphene; Polymers; Hybrid composites; Influencing factors; Applications

Online: 8 April 2024 (14:26:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0495.v1

Ultimate Sensitivity of Threat Detection by an Anisotropic Diffusion Mobility Analyser with an Individual Ion Counter

Michael Burton, David Mueller, Jonathan Rowles, Boris Gorbunov

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: ion cloud engineering; ion mobility; verification of numerical modelling; ultra-sensitive ion detection; airport security

Online: 8 April 2024 (08:14:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0476.v1

Metabolomics on Apple (Malus domestica) Cuticle—Search for Authenticity Markers

Kamila Bechynska, Jiri Sedlak, Leos Uttl, Vit Kosek, Petra Vackova, Vladimir Kocourek, Jana Hajslova

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Malus domestica; apple cuticle; UHPLC-HRMS/MS; metabolomic fingerprints; classification models; markers; wax esters

Online: 8 April 2024 (03:04:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0475.v1

A Color-Detectable Vitamin C Controlled-Release System Fabricated Using Electrospinning

Min Jae Shin

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: vitamin C; controlled-release system; electrospinning; polydiacetylene

Online: 7 April 2024 (10:58:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0441.v1

The Time Temperature Superposition in Polymeric Rubber Gels Treated by Means of the Mode-Coupling Theory

Francesco Mallamace, Giuseppe Mensitieri, Martina Salzano de luna, Domenico Mallamace

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: viscoelasticity; relaxations; polymeric gels; dynamical arrest

Online: 5 April 2024 (13:14:38 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0437.v1

Drug Development for Alzheimer’s and Parkinson’s Disease: Where Do We Go Now?

Lisa Sequeira, Sofia Benfeito, Carlos Fernandes, Alexandra Gaspar, Inês Lima, Joana Peixoto, Catarina Alves, Cláudia Sofia Machado, Fernanda Borges, Daniel Chavarria

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: neurodegenerative diseases; Parkinson’ s disease; Alzheimer’ s disease; drug discovery; disease-modifying drugs

Online: 5 April 2024 (12:39:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0424.v1

Hydrothermally Doping Valve Metal Nb into Titanate Nanofibers Structure for Potentially Engineering Bone Tissue

Yang Tian, Parker Cole, Yiting Xiao, Abdussamad Akhter, Trenton Collins, Lu Zhang, Yan Huang, Ryan Tian

Subject: Chemistry And Materials Science, Biomaterials Keywords: Nanosynthesis; Titanate nanofiber; Bone tissue engineering; Bone scaffold; Niobium dopant; Pro-bone elements

Online: 5 April 2024 (09:22:12 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202404.0402.v1

A Novel Superconducting Mechanism Enabling High Temperature Superconductivity in Thorium Salts

George J. Zhao, Dong Zhao

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Superconducting mechanism; high temperature superconductors; electron parings; network for electron pairs; thorium deregulation

Online: 5 April 2024 (06:18:18 CEST)

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An innovative superconducting mechanism was developed based on a patented discovery of high temperature superconductivity in several thorium (Th) salts or compounds. The rationale behind this discovery is through the experimental results about the unique electronical and magnetic properties of these Th salts. Accordingly, this new superconducting mechanism for these Th salts was obtained through the analyses of the compounds’ molecular configurations and the packings of their relevant crystal structures. Owing to the distinctive properties of the Th compounds in this discovery, we further established a different electron pairing scheme as opposed to the pairing of the Cooper pairs. Compared to the long distance electron pairing of the Cooper pairs, the new electron pairing in our mechanism is constructed by two closely correlated electrons that reside on the same atomic orbital of the Th cation as an electron lone pair. In this new superconducting mechanism, the Th cation is sitting on a relevant crystallographic lattice arrangement or a network of the relevant Th compounds. This network is constructed by many Th cations along certain crystallographic lattice arrangement where each Th cation contains one electron lone pair. This network allows the electron lone pairs on the Th cations to be delocalized over the network, “in pair”, and thus, reveals the electron lone pair in presence in a long distance fashion. The closely correlated electron lone pairs hop on this network and thus construct the supercurrent over the network. This explanation about the superconductivity laid the basis for our superconducting mechanism. All these conclusions came from the previous studies about these compounds that illustrated their unusual features of a coexistence of high electrical conductivity and diamagnetism. These electrical and magnetic properties fall in line with that of superconductors but, surprisingly, these Th compounds have such properties at the ambient condition, meaning under high or room temperature and atmosphere pressure. We expect that this mechanism may be appropriate to be utilized to other superconducting cases and therefore, can be adapted to describe the superconducting phenomenon for other superconductors. If this superconducting mechanism can be successfully applied to other superconductive cases, it may be served as a tool for future research to bring the superconducting transition (critical) temperature T_c to exceed room temperature landmark and hence, the over a century dream of obtaining an applicable superconductor can be realized.

Preprint ARTICLE | doi:10.20944/preprints202404.0367.v1

Rheology of Suspensions of Cellulose Nanofibrils Containing Different Charged Functional Groups

Luís Alves, Solange Magalhães, Jorge F. S. Pedrosa, Paulo J. T. Ferreira, José A.F. Gamelas, Maria Graça Rasteiro

Subject: Chemistry And Materials Science, Biomaterials Keywords: Hydrogels; cellulose nanofibres; degree of polymerization; charge density; entanglement; aggregation

Online: 4 April 2024 (13:18:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0327.v1

Effect of Feed Mass, Reactor Temperature and Time on Yield of Waste Plastic Pyrolysis Oil Produced via a Fixed Bed Reactor

Saša Papuga, Jelena Savković, Milica Djurdjevic, Stefano Vecchio Ciprioti

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: polypropylene; plastic waste; pyrolysis; fixed bed reactor; response surface methodology

Online: 4 April 2024 (12:58:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0378.v1

Strain Effect on Dielectricity of Elastic Thermoplastic Polyurethanes

Yubo Wang, Huali Yang, Yali Xie, Xilai Bao, Lili Pan, Dan Zhao, Jinxia Chen, Mengting Zou, Tian Tian, Run-Wei Li

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: dielectric constant; dielectric elastomer; polyurethane; strain; hard domains

Online: 4 April 2024 (12:34:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0369.v1

Preliminary Evaluation of Poly-(Sorbitol-Co-Citrate Adipate) Properties for Application as Biomaterial

Adriano de Ulhôa Torres, Boutros Sarrouh, Renata Carolina Zanetti Lofrano

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: biopolymer; biodegradation; copolymer; antimicrobial activity.

Online: 4 April 2024 (11:00:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0341.v1

Biodegradation of Polystyrene by Plastic-Eating Tenebrionidae Larvae

Erika Alessia Di Liberto, Giuseppe Battaglia, Rosalia Pellerito, Giusy Curcuruto, Nadka Tz. Dintcheva

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: biodegradation; polystyrene; Tenebrio Molitor; Zophobas Morio.

Online: 4 April 2024 (09:19:36 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0338.v1

Natural Antimicrobials in Dairy Products: Benefits, Challenges, and Future Trends

Maria Eduarda Masques Soutelino, Adriana Cristina de Oliveira Silva, Ramon da Silva Rocha

Subject: Chemistry And Materials Science, Other Keywords: foodborne diseases; natural antimicrobial compounds; bacteriocins; essential oils.

Online: 4 April 2024 (09:12:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0355.v1

Evaluation of the Potential of Urinary Volatilomic Patterns of COVID-19 Patients Infected With SARS-CoV-2 for Disease Diagnosis. An Exploratory Study

Giulia Riccio, Joana Neto, Cristina V. Berenguer, Cristina P. Ornelas, Viviana Greco, Jorge Pereira, Rosa Perestrelo, José S. Câmara

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: VOMs; urine; COVID-19; volatilomics; HS-SPME/GC-MS

Online: 4 April 2024 (08:10:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0330.v1

SBA-15 Loaded with Methylene Blue Dye for Efficient and Low-Cost Decontamination of Water under Visible Led Light

Khaled Chawraba, Hussein Medlej, Malak Hamieh, Jacques Lalevée, Tayssir Hamieh, Joumana Toufaily

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: SBA-15; Methylene blue; sensitization; wastewater treatment; photocatalysis; visible light

Online: 4 April 2024 (06:08:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0297.v1

Cyanotoxin Occurrence and Diversity in 98 Cyanobacterial Blooms From Swedish Lakes and the Baltic Sea

Caroline Dirks, Paolo Cappelli, Maria Blomqvist, Susanne Ekroth, Malin Johansson, Max Persson, Stina Drakare, Heidi Pekar, Aida Zuberovic Muratovic

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: cyanotoxins; cyanobacteria; blooms; analysis; survey; LC-MS/MS.

Online: 4 April 2024 (05:37:42 CEST)

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The Drinking Water Directive (EU) 2020/2184 includes the parameter microcystin-LR, a cyanotoxin, which drinking water producers need to analyze if the water source has potential for cyanobacterial blooms. In light of the increasing occurrences of cyanobacterial blooms worldwide and given that more than 50 percent of the drinking water in Sweden is produced from surface water, both fresh and brackish, the need for improved knowledge about cyanotoxin occurrence and cyanobacterial diversity has increased. In this study a total of 98 cyanobacterial blooms were sampled in 2016-2017 and identified regarding their toxin production and taxonomical compositions. The surface water samples from freshwater lakes throughout Sweden including brackish water from 8 east coast locations along the Baltic Sea were analyzed for their toxin content with LC-MS/MS and taxonomic composition with 16S rRNA amplicon sequencing. Both the extracellular and the total toxin content was analyzed. Microcystin´s prevalence was highest with presence in 82% of blooms, of which as free toxins in 39% of blooms. Saxitoxins were found in 36% of blooms in which the congener decarbamoylsaxitoxin (dcSTX) was detected for the first time in Swedish surface waters at four sampling sites. Anatoxins were most rarely detected, followed by cylindrospermopsin, which were found in 6% and 10% of samples, respectively. As expected, nodularin was detected in samples collected from the Baltic Sea only. The cyanobacterial operational taxonomic unit (OTU) with the highest abundance and prevalence could be annotated to Aphanizomenon NIES-81 and the second most profuse cyanobacterial taxon to Microcystis PCC-7914. In addition, two correlations were found, one between Aphanizomenon NIES-81 and saxitoxins and another between Microcystis PCC-7914 and microcystins. This study is of value to drinking water management and scientists involved in recognizing and controlling toxic cyanobacteria blooms.

Preprint REVIEW | doi:10.20944/preprints202404.0245.v1

Carbon Dots for Future Prospects: Synthesis, Characterizations and Recent Applications: A Review (2019–2023)

Habtamu Fekadu Etefa, Aster Aberra Tessema, Francis Birhanu Dejene

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: C-dots; sythesis, Optical properties; Application

Online: 3 April 2024 (16:29:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0302.v1

Effect of Nanohydroxyapatite on Silk Fibroin-Chitosan Interactions. Molecular Dynamics Study

Maciej Przybyłek, Anna Tuwalska, Damian Ledziński, Sandra Śmigiel, Alina Sionkowska, Iwona Białas, Piotr Bełdowski

Subject: Chemistry And Materials Science, Biomaterials Keywords: biomaterials; chitosan; silk fibroin; molecular dynamics; intermolecular interactions; hydrogen bonds

Online: 3 April 2024 (14:02:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0240.v1

Phase transition thermodynamics of 1,3,5-tris-(α-naphthyl)benzene: theory and experiment

Mikhail I. Yagofarov, Dmitrii N. Bolmatenkov, Airat A. Notfullin, Andrey A. Sokolov, Ilya S. Balakhontsev, Timur A. Mukhametzyanov, Boris N. Solomonov

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: vapor pressure; vaporization enthalpy; fusion enthalpy; solution calorimetry; heat capacity; polyaromatic hydrocarbons; fast scanning calorimetry; differential scanning calorimetry

Online: 3 April 2024 (11:14:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0276.v1

Methylation-GC-MS/FID-Based Glycosidic Linkage Analysis of Unfractionated Polysaccharides in Red Seaweeds

Barinder Bajwa, Xiaohui Xing, Stephanie A. Terry, Robert J. Gruninger, D. Wade Abbott

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: methylation analysis; reductive hydrolysis; whole food fiber; whole cell wall; anhydro sugar; agarose; carrageenan; sulfated galactan; mixed linkage xylan; principal component analysis

Online: 3 April 2024 (10:33:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0283.v1

Ultra-broadband Plasmon Resonance in Gold Nanoparticles Precipitated in ZnO-Al2O3-SiO2 Glass

Georgiy Shakhgildyan, Leon Avakyan, Grigoriy Atroshchenko, Maxim Vetchinnikov, Alexandra Zolikova, Elena Ingat’eva, Mariam Ziyatdinova, Elena Subcheva, Lusegen Bugaev, Vladimir Sigaev

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: gold nanoparticles; glass; surface plasmon resonance; LSPR, plasmonics; phase separation; microstructure

Online: 3 April 2024 (10:30:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0267.v1

Characterization of Porous β-type Tricalcium Phosphate Ceramics Formed by Physical Foaming with Freeze-Drying

Kazuaki Hashimoto, Hiroto Oikawa, Hirobumi Shibata

Subject: Chemistry And Materials Science, Biomaterials Keywords: porous β -tricalcium phosphate; physical foaming method; freeze drying; cellulose nanofiber; non-ionic surfactants; hydrophilic/lipophilic balance (HLB)

Online: 3 April 2024 (08:36:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1125.v2

Long Range Effects in Topologically Defective Arm-Chair Graphene Nanoribbons

Enrique Louis, Guillermo Chiappe, José A. Vergés, Emilio San-Fabián

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: graphene; nano-ribbons; long range effects

Online: 3 April 2024 (08:17:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0201.v1

Influence of Pulsed Interference Laser Heating on Crystallization of amorphous Fe77Cu1Si13B9 Ribbons

Agnieszka Radziszewska, Olaf Czyż

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: amorphous alloy; pulsed laser interference heating; FeCuSiB ribbons; magnetic field lines; two-dimentional crystallised micro-area

Online: 2 April 2024 (13:00:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0063.v1

Electrospun Polylactide – Poly(ε-Caprolactone) Fibers: Struсture Characterization and Segmental Dynamic Response

S. G. Karpova, A. A. Olkhov, I. A. Varyan, O. I. Khan, A.A. Botin, A. V. Naletova, A. A. Popov, A. L. Iordanskii

Subject: Chemistry And Materials Science, Biomaterials Keywords: polylactide; polycaprolactone; electrospun fibers; EPR correlation time; amorphous phase, crystalline phase

Online: 2 April 2024 (12:43:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0185.v1

Determination of Microplastics in Omega-3 Oil Supplements

Moonhae Kim, Juyang Kim, Seulah Park, Dowoon Kim, Jaehak Jung, Dongha Cho

Subject: Chemistry And Materials Science, Food Chemistry Keywords: microplastics; omega-3 supplements; health functional foods; μ Raman

Online: 2 April 2024 (10:39:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0134.v1

Exploring the Benefits of Nutritional and Chemical Characteristics of Touriga Nacional and Arinto Varieties (Vitis vinifera L.)

Marisa Nicolai, Paula Pereira, Maria Lídia Palma, Carla Palma, Carlos Borges, Elisabete Maurício, Ana Luísa Fernando, Maria Paula Duarte, Manuela Lageiro, Ana Fernandes, Nuno Mateus

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Polyphenols, antioxidant, fibers, proteins, fatty acids, total sugar, micronutrients, semi-metals, grape pomace, Vitis vinifera.

Online: 2 April 2024 (07:56:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0132.v1

Composites of Betalain Dye and Wide-Energy Gap Polymers for Semitransparent Organic Solar Cells

Peshawa O. Amin, Fahmi F. Muhammadsharif, Salah Raza Saeed, Kamal Aziz Ketuly

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: semitransparent solar cell; natural dye; wide bandgap polymers; BHJ structure; ternary composite

Online: 2 April 2024 (07:22:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0086.v1

Non-isocyanate Synthesis of Aliphatic Polyurethane by BiCl₃-Catalyzed Transurethanization Polycondensation

Bungo Ochiai, Yuriko Kobayashi

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polyurethane; bismuth; polycondensation; non-isocyanate

Online: 2 April 2024 (02:37:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0069.v1

Vesicle Morphogenesis in Amphiphilic Triblock Copolymer Solutions

Senyuan Liu, Mohammad Sadegh Samie, Radhakrishna Sureshkumar

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: Triblock Copolymer; Micelle; Vesicle; Polymersome; Molecular Dynamics; Information Entropy; Nanomedicine; Biomimetic

Online: 2 April 2024 (02:33:10 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/preprints202404.0117.v1

Effects of Crystallinity and Branched Chain on Thermal Degradation of Polyethylene

Shumao Zeng, Diannan Lu, Rui Yang

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polyethylene thermal degradation; crystallinity; branched chain; molecular dynamics simulations; density functional theory calculation

Online: 1 April 2024 (15:37:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0114.v1

The Electronic Properties Evolution of Tellurium Crystals with Plasma Irradiation Treatment

Congzhi Bi, Tianyu Wu, Jingjing Shao, Pengtao Jing, Hai Xu, Jilian Xu, Wenxi Guo, Yufei Liu, Da Zhan

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: tellurium crystal flake; plasma irradiation; tunnelling current; conductive atomic force microscopy (CAFM); band gap

Online: 1 April 2024 (15:23:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0052.v1

To Bind or Not to Bind? A Comprehensive Characterization of TIR1 and Auxins Using Consensus in Silico Approaches

Fernando D. Prieto-Martínez, Jennifer Mendoza-Cañas, Karina Martínez-Mayorga

Subject: Chemistry And Materials Science, Theoretical Chemistry Keywords: Herbicides; auxins; molecular dynamics; machine learning

Online: 1 April 2024 (12:43:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0079.v1

Hydrogen Production by Steam Reforming of Ethanol and Dry Reforming of Methane with CO2 on Ni/Vermiculite: Stability Improvement via Acid-Base Treatment of the Support

Hanane Mahir, Abdellah Benzaouak, Farah Mesrar, Adnane El Hamidi, Mohamed Kacimi, Luca Consentino, Leonarda Francesca LIOTTA

Subject: Chemistry And Materials Science, Other Keywords: Dry reforming, steam reforming, nickel catalyst, vermiculite, clay, mixed oxide

Online: 1 April 2024 (12:33:59 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0044.v1

Recent Developments on CO2 Hydrogenation Performance over Structured Zeolites: A Review on Properties, Synthesis, and Characterization

Methene Briones Cutad, Mohammed J. Al-Marri, Anand Kumar

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: Carbon dioxide hydrogenation; Structured zeolites; Zeolites synthesis and characterization

Online: 1 April 2024 (11:12:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1882.v1

Study of physicochemical quality and organic contamination in Algerian honeys

Sofiane Derrar, Vincenzo Lo Turco, Ambrogina Albergamo, Benedetta Sgrò, Mohamed Amine Ayad, Federica Litrenta, Mohamed Said Saim, Angela Giorgia Potortì, Hebib Aggad, Rossana Rando, Giuseppa Di Bella

Subject: Chemistry And Materials Science, Food Chemistry Keywords: Algerian honey; beekeeping; physicochemical parameters; organic contamination; pesticides; PAHs; PCBs; plasticizers; persistent organic pollutants

Online: 1 April 2024 (10:17:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0019.v1

Influences of Etchants on Etched Surfaces of High-Strength and High Conductivity Cu Alloy of Different Processing States

Jinyang Fang, Qingke Zhang, Xinli Zhang, Feng Liu, Chaofeng Li, Lijing Yang, Cheng Xu, Zhenlun Song

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: Cu alloy; Etching; Ferric chloride; Copper chloride; Surface morphology; Roughness

Online: 1 April 2024 (10:07:28 CEST)

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Preprint REVIEW | doi:10.20944/preprints202403.1841.v1

Why Carbon Nanotubes Improve Aqueous Nanofluid Thermal Conductivity: A Qualitative Model

Ibrahim Khoswan, Heba Nassar, Mohyeddin Assali, Abdelrahim AbuSafa, Shadi Sawalha, Hikmat Said Hilal

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Carbon nanotubes (CNTs); Thermal conductivity enhancement of water; Heat transfer fluids; CNT aqueous nanofluids

Online: 29 March 2024 (10:43:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1835.v1

The Influence of Rare Earth Ce on the Microstructure and Properties of Cast Pure Copper

Mingyi Zhang, Jichun Yang, Haixiao Li

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Pure copper; Rare earth; Organization; Performance; Thermodynamics

Online: 29 March 2024 (10:40:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1821.v1

Oxygen Defects Containing TiN Films for the Hydrogen Evolution Reaction: A Robust Thin Film Electrocatalyst With Outstanding Performance

Ayoub Laghrissi, Mohammed Es-Souni

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Hydrogen evolution reaction; Titanium nitride; Oxygen defects; TiNO; linear sweep voltammertry; DFT

Online: 29 March 2024 (10:01:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1766.v1

Revealing the Critical Role of Global Electron Density Transfer in the Reaction Rate of Polar Organic Reactions within Molecular Electron Density Theory

Luis R. Domingo, Mar Ríos-Gutiérrez

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Global electron density transfer; Molecular Electron Density Theory; Polar reactions; Interacting Quantum Atoms; Interacting Quantum Fragments.

Online: 28 March 2024 (14:20:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1698.v1

Experimental Demonstration of Energy Harvesting by Maxwell's Demon Device

Hewa Mustafa

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: Renewable energy, novel cycle, Maxwell's demon

Online: 28 March 2024 (13:17:13 CET)

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Chemistry and Materials Science