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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/preprints202404.1012.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/preprints202404.1004.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 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/preprints202404.0079.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 ARTICLE | doi:10.20944/preprints202403.1591.v1

Copper(II), Nickel(II) and Zinc(II) Complexes of Peptide Fragments of Tau Protein

Zsuzsa Kastal, Adrienn Balabán, Szilvia Vida, Csilla Kallay, Lajos Nagy, Katalin Várnagy, Imre Sóvágó

Subject: Chemistry And Materials Science, Other Keywords: tau protein; histidine containing fragments; copper(II) complex; zinc(II) complex; nickel(II) complex; copper(II) catalysed oxidation; potentiometry; UV-Vis spectroscopy; CD spectroscopy

Online: 26 March 2024 (14:29:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1061.v1

Biodiesel Production and Evaluation Using Chlorella vulgaris That Has Been Grown in Industrial Dairy Wastewater

Ilham Putra Adiyaksa, Kadir Ozaltin, Antonio di martino

Subject: Chemistry And Materials Science, Other Keywords: biodiesel; C. Vulgaris microalgae; transesterification; dairy wastewater

Online: 19 March 2024 (06:56:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0998.v1

The Effect of Temperature and Treatment Regime on the Physical, Chemical, and Biological Properties of Poultry Litter Biochar

Joyce Clarke, Maria Olea

Subject: Chemistry And Materials Science, Other Keywords: Poultry litter; torrefaction; hydrothermal carbonisation; biochar; hydrochar; germination; sylvite; morphology

Online: 18 March 2024 (09:35:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0395.v1

The Sensitivity of Structure to Ionic Radius and Reaction Stoichiometry. A Crystallographic Study of Metal Coordination and Hydrogen Bonding in Barbiturate Complexes of All Five Alkali Metals Li–Cs

William Clegg, Gary S. Nichol

Subject: Chemistry And Materials Science, Other Keywords: crystal structure; alkali metals; barbituric acid; coordination; stoichiometry; bridging ligands; hydrogen bonding

Online: 8 March 2024 (01:53:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0053.v1

Chemical Characterization and Evaluation of the Antimicrobial Activity of Extracts from Two Cultivars of Cannabis sativa L. (Tisza and Kompolti) Grown in Sardinia

Claudia C.A. Juliano, Ivana Mattu, Mauro Marchetti, Marianna Usai

Subject: Chemistry And Materials Science, Other Keywords: Cannabis sativa L.; Tisza; Kompolti; essential oils; resins; antimicrobial activity

Online: 1 March 2024 (14:40:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1648.v1

Novel Fluorescent Strategy of B Cell Selective Probe

Heewon Cho, Na-Kyung Hong, Young-Tae Chang

Subject: Chemistry And Materials Science, Other Keywords: Fluorescent carbohydrate library; High-throughput phenotypic screening; Gating-Oriented Live-cell Distinction; Solute carrier; B cell specific probe

Online: 29 February 2024 (17:00:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1624.v1

Advanced-Glycation End Products-Selective Probe Development

Heewon Cho, Na-Kyeong Hong, Insung Yong, Haw-Young Kwon, Nam-Young Kang, Larissa Miasiro Ciaramicoli, Pilnam Kim, Young-Tae Chang

Subject: Chemistry And Materials Science, Other Keywords: Advanced glycation products; fluorescence small molecule; Fluorescence library; Screening; Aging

Online: 28 February 2024 (10:42:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0587.v1

Novel Dry Powder of Hyaluronic Acid-Vancomycin Complex for Inhalation Useful on Pulmonary Infections Associated to Cystic Fibrosis

María Sol Magi, Yanina De Lafuente, Eride Quarta, María Celeste Palena, Perla Ardiles, Paulina Laura Páez, Fabio Sonvico, Francesca Buttini, Alvaro Jimenez-Kairuz

Subject: Chemistry And Materials Science, Other Keywords: Vancomycin inhalable; cystic fibrosis; polyelectrolyte-drug complex; hyaluronic acid; pulmonary infection

Online: 12 February 2024 (04:53:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0914.v1

Synthesis and Application of Polymer SXFA in Detection of Organophosphine Agents with SAW Sensor

Can can Yan, Yong Pan, Mo lin Qin, Teng xiao Guo, Lin Zhang, Jun chao Yang

Subject: Chemistry And Materials Science, Other Keywords: SXFA; SAW-SXFA sensor; organophosphorus agent; GB

Online: 12 January 2024 (03:54:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0921.v1

Investigating Postconsumer Clothing Wastes for Sustainable Waste Management: A Circular Economy Approach

Samuel Aysheshim, Shalemu Sharew Hailemariam

Subject: Chemistry And Materials Science, Other Keywords: recycling; sustainability; circular Economy; post-consumer clothing waste; business model; composites

Online: 11 January 2024 (12:09:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0878.v1

Changes in Functional Groups and Crystal Structure of Coal Tar Pitch with Respect to Carbonization Temperature

Sang-Hye Lee, Jae-Seung Roh

Subject: Chemistry And Materials Science, Other Keywords: coal tar pitch; carbonization; XRD; FT-IR; Functional group

Online: 11 January 2024 (08:00:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0669.v1

Investigating the Competitive Factors of Metal-Anion Coordination, Coordination by Water, and Hydrogen Bonding in Complexes of Cyanuric Acid with the Alkaline Earth Metals

William Clegg, Gary S. Nichol

Subject: Chemistry And Materials Science, Other Keywords: crystal structure; alkaline earth metals; cyanuric acid; hydrogen bonding; bridging ligands; chelate formation

Online: 9 January 2024 (04:38:37 CET)

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Preprint REVIEW | doi:10.20944/preprints202401.0401.v1

Advancements and Challenges in Solid-State Battery Technology: An In-Depth Review of Solid Electrolytes and Anode Innovations

Abniel Machín, Carmen Morant, Francisco Márquez

Subject: Chemistry And Materials Science, Other Keywords: Solid-State Batteries, Solid Electrolyte, Anode

Online: 4 January 2024 (11:20:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.2288.v1

Impact of the Citrus Industry on the Water Quality of the Filobobos River in Veracruz, Mexico

Luis Carlos Sandoval Herazo, Humberto Raymundo González-Moreno, Luis Guillermo Carreto-Hernandez, Florentina Zurita, Graciela Nani, Sergio Zamora, Mayerlin Sandoval-Herazo, Georgina Martinez-Resendiz

Subject: Chemistry And Materials Science, Other Keywords: freshwater ecosystem; anthropogenic pressure; water pollution; industrial de-development; polluted rivers

Online: 29 December 2023 (13:40:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.2284.v1

Impact of Micronized Salt in the Reducing the Sodium Content in Fresh Sausages

Chimenes Darlan Leal De Araújo, Monique Marcondes Krauskopf, João Antônio Santos Manzi, José Andrew de Lira Barbosa, Cecylyana Leite Cavalcante, Gabriela Feltre, Juan D. Rios-Mera, Erick Saldaña, Carmen Josefina Contreras-Castillo

Subject: Chemistry And Materials Science, Other Keywords: TCATA; texture profile; consumers; healthy meat products

Online: 29 December 2023 (10:38:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1843.v1

Preparative and Catalytic Properties of MoVI Mononuclear and Metallosupramolecular Coordination Assemblies Bearing Hydrazonato Ligands

Mirna Mandarić, Edi Topić, Dominique Agustin, Jana Pisk, Višnja Vrdoljak

Subject: Chemistry And Materials Science, Other Keywords: molybdenum; hydrazone; metallosupramolecular; dinuclear; metallacycles; polymers; epoxidation; cyclooctene; catalysis; DFT

Online: 25 December 2023 (11:24:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1616.v1

Breathable Iron-based MIL–88 Framework as Dyes Adsorbent in Aqueous Solution

Dita Arifa Nurani, Nabila Anisa, Irena Khatrin, Yasmin Yasmin, Grandprix Thomryes Marth Kadja, Yuni Krisyuningsih Krisnandi

Subject: Chemistry And Materials Science, Other Keywords: Metal-Organic Framework; Fe-MOF; breathable adsorbent; dyes removal; MIL-88B(Fe)

Online: 21 December 2023 (06:21:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1472.v1

Ethanol Based Extraction of Annatto (Bixa Orellana L.) and Characterisation of the Bixin and Norbixin

Ebenezer Aluko, Abayomi Adetuyi

Subject: Chemistry And Materials Science, Other Keywords: Soxhlet; Characterisation; ethanol; pH; Spectroscopy; UV; FTIR; Bixin; Norbixin

Online: 20 December 2023 (01:37:34 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.1362.v1

A Comprehensive Review on Deep Eutectic Solvents and Its Use to Extract Bioactive Compounds of Pharmaceutical Interest

Cátia Ferreira, And Mafalda Sarraguça

Subject: Chemistry And Materials Science, Other Keywords: Green Chemistry; Sustainability; Neoteric Solvents; Deep Eutectic Solvents; Bioactive Compounds; Extraction techniques; Natural products; Pharmaceutical Industry

Online: 19 December 2023 (07:23:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1065.v1

Catalytic Upgrading of Rice Straw Bio-Oil via Esterification in Supercritical Ethanol Over Bimetallic Catalyst Supported on Rice Straw Biochar

Alhassan Ibrahim, Islam Elsayed, El Barbary Hassan

Subject: Chemistry And Materials Science, Other Keywords: Rice straw; Fast pyrolysis; Biochar; Bio-oil upgrading; Bimetallic oxide catalysts

Online: 14 December 2023 (10:39:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0371.v1

Anti-trypanosomal Bufadienolides From the Oocytes of the Toad Rhinella alata (Anura, Bufonidae)

Candelario Rodriguez, Roberto Ibáñez, Dionisio A. Olmedo, Michelle Ng, Carmenza Spadafora, Armando A. Durant-Archibold, Marcelino Gutiérrez

Subject: Chemistry And Materials Science, Other Keywords: Rhinella alata; toads; Bufonidae; oocytes; bufadienolides; anti-trypanosomal activity; Trypanosoma cruzi

Online: 6 December 2023 (08:44:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0097.v1

Novel Nanostructured Pd/Co‐Alumina Materials for the Catalytic Oxidation of Atmospheric Pollutants

Eleni F. Iliopoulou, Eleni Pachatouridou, Angelos A. Lappas

Subject: Chemistry And Materials Science, Other Keywords: CO oxidation; Methanol oxidation; Spray impregnation; Core-shell; Cobalt oxide; Palladium

Online: 1 December 2023 (16:32:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1516.v1

Richard Kerner’s Path Integral Approach Aims to Understand the Self-Organized Matter Agglomeration and Its Translation into the Energy Landscape Kinetics Paradigm

Gerardo G. Naumis

Subject: Chemistry And Materials Science, Other Keywords: Self-assemble; Matter agglomeration; Glasses; Quasicrystals; Carbon Fullerenes; Graphene; Virus Structures; Nanotechnology; Energy landscape; Path Integrals.

Online: 23 November 2023 (11:07:04 CET)

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Preprint REVIEW | doi:10.20944/preprints202311.1470.v1

Rare Erath Elements: Their Geological Sources and the Potential of Organosulfonic Acids For Rare Earth Elements Leaching from Coal Ash and Process Optimization

Adango Miadonye, Mumuni Amadu

Subject: Chemistry And Materials Science, Other Keywords: Coal ash; mineral acids; organosulfonic acids; lixiviants; hydrometallurgy; rare earth elements

Online: 23 November 2023 (04:50:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0936.v1

Modulation of Ferrocene-Ferrocene Interactions by Varying Their Reciprocal Positions in L-Dap/Aib Helical Peptides

Annalisa Bisello, Barbara Biondi, Roberta Cardena, Renato Schiesari, Marco Crisma, Fernando Formaggio, Saverio Santi

Subject: Chemistry And Materials Science, Other Keywords: ferrocene; peptide; cyclic voltammetry; X-ray diffraction

Online: 15 November 2023 (01:53:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0743.v1

Radionuclide Removal from Aqueous Solutions by Oxidized Carbon Fabrics

Ioannis Ioannidis, Ioannis Pashalidis, Batuhan Mulla, Gkerman Kotanidis, Kyriacos Ioannou, Georgios Constantinides, Nikolaos Kostoglou, Claus Rebholz

Subject: Chemistry And Materials Science, Other Keywords: U-232; Am-241; radioactivity; radionuclide removal; oxidized carbon fabrics; water treatment

Online: 13 November 2023 (11:06:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0573.v1

Determination and Quantification of Acetaldehyde, Acetone and Methanol in Hand Sanitizes Using Headspace GC-MS: Effect of Storage Time and Temperature

Jacob Abraham Theruvathu, Chessa To

Subject: Chemistry And Materials Science, Other Keywords: Hand sanitizer; alcohol; acetaldehyde; acetone; GC/MS; isotope; storage time; temperature

Online: 9 November 2023 (07:25:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.2004.v1

Copper-Free Sonogashira Cross-Coupling of Aryl Chlorides with (Hetero)arylacetylenes in the Presence of Ppm Molar Loadings of [{Pd(OH)Cl(NHC)}₂] Complexes. Hydrogen Chloride as a Coupling Product. Co-catalytic Effect of Water

Sylwia Ostrowska, Szymon Rogalski, Cezary Pietraszuk

Subject: Chemistry And Materials Science, Other Keywords: copper-free Sonogashira; cross-coupling; palladium; NHC complexes

Online: 31 October 2023 (06:08:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1982.v1

Neutral and Ionic Form of (Benzylthio)acetic Acid in Novel Aminopyrimidine Based Multi-Component Crystalline Phases

Justyna Sienkiewicz-Gromiuk, Aleksandra Drzewiecka-Antonik

Subject: Chemistry And Materials Science, Other Keywords: (benzylthio)acetic acid; aminopyrimidines; supramolecular organic frameworks (SOFs); co-crystal; salt solvate; nonbonding contacts; SC XRD structural analysis; FT-IR spectroscopy; thermal study

Online: 31 October 2023 (04:11:29 CET)

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The (benzylthio)acetic acid (HBTA) and some aminopyrimidines, namely 2-aminopyrimidine (2-AP), 5-aminopyrimidine (5-AP), 2-amino-4,6-dimethylpyrimidine (2-A-4,6-DMP) and 2,4,6-triaminopyrimidine (2,4,6-TAP), were successfully embodied as structural units into the construction of a total of four novel supramolecular organic frameworks. The received crystalline solids were inspected by single crystal X-ray diffraction (SC XRD) in order to obtain insight into the structural and supramolecular facets. The SOFs deriving from 2-AP, 5-AP as well as 2-A-4,6-DMP crystallize in the form of true co-crystals (1-3), while the one originating from 2,4,6-TAP crystallizes as salt solvate (4). The SC XRD results indicated the different contents of structural residues present in the asymmetric units of the crystals 1-4 despite the using the same molar ratio of molecular co-formers in each case. The molecular structures of co-crystals 1-3 consist of either one neutral residue of each starting components (1 and 3) or a half nonionized residue of aminopyrimidine ingredient and one neutral residue of acidic specie (2). The asymmetric unit of salt solvate 4 is composed of two ionized residues of each co-former (two 2,4,6-TAP+ cations and two BTA- anions) and one MeOH solvent molecule. The most extensive H-bonding network is observed in the crystal structure of salt solvate 4. The relevant molecular ingredients in co-crystals 1-3 are mainly hold together by the neutral Ocarboxylic–H···Npyrimidine and Namine–H···Ocarboxylic H-bonds. In the case of aggregate 4, the corresponding ionic residues are predominantly sustained by the charged-assisted Npyrimidinium–H···Ocarboxylate and Namine–H···Ocarboxylate hydrogen interactions. The MeOH solvent incorporated into the crystal lattice of adduct 4 is also involved in H-bonding by simultaneously serving as the single donor in OMeOH–H···S and the single acceptor in Namine–H···OMeOH H-bonds afforded the structural diversity within the 2,4,6-TAP+ cations and BTA- anions. Other weaker sets of additional non-covalent contacts existing in the crystal structures of analyzed conglomerates are involved in the self-assembly, stabilization and expansion of total supramolecular organic frameworks. The fact of the formation of non-covalent bonded supramolecular organic frameworks in question is also reflected in corresponding results obtained through elemental analysis (EA), Fourier transform infrared spectroscopy (FT−IR) and thermal analysis (TG/DSC).

Preprint ARTICLE | doi:10.20944/preprints202309.1889.v1

Title: Growth of germanium thin film on sapphire by molecular beam epitaxy

Emmanuel Wangila, Peter Lytvyn, Hryhorii Stanchu, Calbi Gunder, Fernando Maia De Oliveira, Samir K. Saha, Subhashis Das, Nirosh M Eldose, Chen Li, Mohammad Zamani Alavijeh, Yuriy I Mazur, Shui-Qing Yu, Gregory J Salamo

Subject: Chemistry And Materials Science, Other Keywords: Correlation length; bivariate polar histograms; twinning.

Online: 28 September 2023 (03:37:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1700.v1

An influence of fluorinated alkyl substituents on structure and magnetic properties of Mn(II) complexes with pyrazolyl-substituted nitronyl nitroxides

Ekaterina Kudryavtseva, Andrey Serykh, Bogdan Ugrak, Tatyana Dutova, Darina I. Nasyrova, Alexander Korlyukov, Mikhail A. Zykin, Nikolay Nikolaevich Efimov, Artem S. Bogomyakov, Evgeny Tretyakov

Subject: Chemistry And Materials Science, Other Keywords: nitronyl nitroxides; metal-nitroxide complexes; crystal structures; magnetic properties

Online: 26 September 2023 (04:32:12 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202309.1513.v1

Preparing University Chemistry Education for a Sustainable Future in the Age of AI

Yee Seng Tan, Chien Ing Yeo, Chee-Yan Choo, Long Chiau Ming

Subject: Chemistry And Materials Science, Other Keywords: Sustainability; Sustainable Development Goals (SDGs); Chemistry education; Ethical AI; Curriculum; Data science; Generative AI

Online: 22 September 2023 (09:10:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202309.1360.v1

Management of Agri-Food Waste Based on Thermochemical Processes towards a Circular Bioeconomy Concept. The Case Study of Portuguese Industry

Cristina V. Berenguer, Rosa Perestrelo, Jorge A. M. Pereira, José S. Câmara

Subject: Chemistry And Materials Science, Other Keywords: agri-food wastes; thermochemical conversion; Portugal; carbonaceous materials

Online: 20 September 2023 (10:23:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202309.0937.v1

A Review of Various Synthesis Methods of Graphene and Applications

Balaji S, Madhumidha V, Haritha K, Cyril A

Subject: Chemistry And Materials Science, Other Keywords: Graphene Oxide; Reduced Graphene Oxide; 2D-material; hexagonal honeycomb-like structure; sp2 hybridization

Online: 14 September 2023 (03:35:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0115.v1

Oil Degradation Patterns in Diesel and Petrol Engines Observed in the Field – An Approach Applying Mass Spectrometry

Adam Agocs, András Lajos Nagy, Andjelka Ristic, Zsolt Miklós Tabakov, Péter Raffai, Charlotte Besser, Marcella Frauscher

Subject: Chemistry And Materials Science, Other Keywords: engine oil; internal combustion engine; oil additive; additive degradation; mass spectrometry; antiwear additives; ZDDP

Online: 4 September 2023 (07:25:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.2009.v1

The Improved Microwave Absorption Performance of the 3D Porous (Ni@NO-C)n/No-C Composite Absorber

Xinmeng Jia, Zhigang Li, Chao Ruan, Yongfu Lian

Subject: Chemistry And Materials Science, Other Keywords: N,O-doped carbon; magnetic metal; special microstructure; impedance match; reflection loss

Online: 30 August 2023 (03:41:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0180.v1

Response Surface Methodology in Optimizing the Extraction of Polyphenolic Antioxidants from Flower Buds of Magnolia × soulangeana Soul.-Bod. Var. ‘Lennei’ and Their Detailed Phytochemical Profiling Using Coupled Chromatographic, Spectroscopic and Tandem Mass Spectrometric Techniques

Grażyna Zgórka, Aldona Adamska-Szewczyk, Tomasz Baj

Subject: Chemistry And Materials Science, Other Keywords: Magnolia x soulangeana var. ‘Lennei’; response surface methodology; ultrasound-assisted extraction; phytochemical profiling; phenolic antioxidants

Online: 2 August 2023 (09:58:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1443.v2

Read this First! How to Prepare a Manuscript for Submission to a Chemical Science Journal

Anja Dekanski, Aleksandar Dekanski

Subject: Chemistry And Materials Science, Other Keywords: Academic skills; postgraduate education; publish or perish; 12 golden rules; IUPAC recommendations and nomenclature

Online: 1 August 2023 (10:48:52 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202305.0704.v2

Generating Potential Protein-Protein Interaction Inhibitor Molecules Based on Physicochemical Properties

Masahito Ohue, Yuki Kojima, Takatsugu Kosugi

Subject: Chemistry And Materials Science, Other Keywords: protein-protein interaction inhibitor; rule of five; rule of four; QEPPI; molecular generation; virtual chemical library

Online: 30 June 2023 (08:50:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.2073.v1

Pedagogical Purposes of Scientifical and Technological Literacy within Sustainable and Green Chemistry in the High School

Teresa Celestino

Subject: Chemistry And Materials Science, Other Keywords: green chemistry education; sustainability; scientific and technological literacy; science, technology and society; interdisciplinary studies; environmental education; chemical education

Online: 29 June 2023 (07:29:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0732.v1

A Comparison of Conical and Cylindrical Implants Inserted in an in vitro Post-Extraction Model Using Low-Density Polyurethane Foam Blocks

Luca Comuzzi, Margherita Tumedei, Natalia Di Pietro, Tea Romasco, Hamid Heydari Sheikh Hossein, Lorenzo Montesani, Francesco Inchingolo, Adriano Piattelli, Ugo Covani

Subject: Chemistry And Materials Science, Other Keywords: artificial bone; conical implants; cylindrical implants; dental implants; implant stability quotient; insertion torque; polyurethane; post-extraction sites; removal torque

Online: 9 June 2023 (16:15:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0429.v1

Preliminary TC Calculations for Iron-Based Superconductivity in NaFeAs, LiFeAs, FeSe and Nanostructured FeSe/SrTiO₃ Superconductors

Chi Ho Wong, Rolf Lortz

Subject: Chemistry And Materials Science, Other Keywords: Iron-based Superconductivity

Online: 6 June 2023 (09:43:32 CEST)

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Many theoretical models of iron-based superconductors have been proposed but Tc calculations based on the models are usually missing. We have chosen two models of iron-based superconductors in the literature and then compute the Tc values accordingly: Recently two models have been announced which suggest that superconducting electron concentration involved in the pairing mechanism of iron-based superconductors may have been underestimated, and that the antiferromagnetism and the induced xy potential may even have a dramatic amplification effect on electron-phonon coupling. We use bulk FeSe, LiFeAs and NaFeAs data to calculate the Tc based on these models and test if the combined model can predict the superconducting transition temperature (Tc) of the nanostructured FeSe monolayer well. To substantiate the recently announced xy potential in the literature, we create a two-channel model to separately superimpose the dynamics of the electron in the upper and lower tetrahedral plane. The results of our two-channel model support the literature data. While scientists are still searching for a universal DFT functional that can describe the pairing mechanism of all iron-based superconductors, we base on the ARPES data to propose an empirical combination of DFT functional for revising the electron-phonon scattering matrix in the superconducting state, which ensures that all electrons involved in iron-based superconductivity are included in the computation. Our computational model takes into account this amplifying effect of antiferromagnetism and the correction of the electron-phonon scattering matrix together with the abnormal soft out-of-plane lattice vibration of the layered structure, which allows us to calculate theoretical Tc values of LiFeAs, NaFeAs and FeSe as a function of pressure that correspond reasonably well to the experimental values. More importantly, by taking into account the interfacial effect between an FeSe monolayer and its SrTiO3 substrate as an additional gain factor, our calculated Tc value is up to 91 K high, and provides evidence that the strong Tc enhancement recently observed in such monolayers with Tc reaching 100 K may be contributed from the electrons within the ARPES range.

Preprint ARTICLE | doi:10.20944/preprints202306.0234.v1

Catalytic Performances of Co/TiO2 Catalysts in the Oxidative Dehydrogenation of Ethane to Ethylene: Effect of CoTiO3 and Co2TiO4 Phases Formation

Hanane Mahir, Younes Brik, Abdallah Benzaouak, Eleonora La Greca, Luca Consentino, Adnane El Hamidi, Mohamed Kacimi, Leonarda Francesca Liotta

Subject: Chemistry And Materials Science, Other Keywords: ODH; cobalt titanate; ethane; oxidative dehydrogenation

Online: 5 June 2023 (04:19:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.2265.v1

Coordination Polymers With the Pyrazine-2,5-Diyldimethanol Linker – Supramolecular Networks Through Robust Hydrogen and Halogen Bonds

Mahsa Armaghan, Tobias Stürzer, Christoph Janiak

Subject: Chemistry And Materials Science, Other Keywords: Pyrazine-diyldimethanol; coordination polymers; hydrogen bonding interaction; halogen bonding interaction

Online: 31 May 2023 (14:33:34 CEST)

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Preprint SHORT NOTE | doi:10.20944/preprints202305.2256.v1

N-(diisopropylphosphanyl)benzamide

María M. Alcaide, Daniel García Garrido, Eleuterio Álvarez, Riccardo Peloso

Subject: Chemistry And Materials Science, Other Keywords: P ligands; P(III) compounds; sterically demanding ligands; hemilabile ligands

Online: 31 May 2023 (13:21:49 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.1124.v2

Copper-Based Antibiotic Strategies: Exploring applications in the hospital setting and the targeting of Cu Regulatory Pathways and Current Drug Design Trends

Aixa M. Orta-Rivera, Yazmary Meléndez-Contés, Nataniel Medina-Berríos, Adriana M. Gómez-Cardona, Andrés Ramos-Rodríguez, Claudia Cruz-Santiago, Christian González-Dumeng, Janangelis López, Jansteven Escribano, Jared J. Rivera-Otero, Josean Díaz-Rivera, Sebastián C. Díaz-Vélez, Zulemaría Feliciano-Delgado, Arthur D. Tinoco

Subject: Chemistry And Materials Science, Other Keywords: copper coordination; copper homeostasis; antibacterial; antibiotic

Online: 23 May 2023 (08:01:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1443.v1

Read this First! How to Prepare a Manuscript for Submission to a Chemical Science Journal

Anja Dekanski, Aleksandar Dekanski

Subject: Chemistry And Materials Science, Other Keywords: Academic skills; postgraduate education; publish or perish; 12 golden rules; IUPAC recommendations and nomenclature

Online: 19 May 2023 (12:14:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0704.v1

Generating Potential Protein-Protein Interaction Inhibitor Molecules Based on Physicochemical Properties

Masahito Ohue, Yuki Kojima, Takatsugu Kosugi

Subject: Chemistry And Materials Science, Other Keywords: protein-protein interaction inhibitor; rule of five; rule of four; QEPPI; molecular generation; virtual chemical library

Online: 10 May 2023 (08:09:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0104.v1

Photodeposition of Hydroxyapatite into a Titanium Dioxide Nanotubular Layer using Ca(EDTA) Complex Decomposition

Veronika Yu. Yurova, Polina I. Zyrianova, Pavel V. Nesterov, Vyacheslav V. Goncharov, Ekaterina V. Skorb, Sviatlana A. Ulasevich

Subject: Chemistry And Materials Science, Other Keywords: Photodeposition; hydroxyapatite; titania nanotubes; Ca(EDTA) complex decomposition

Online: 3 May 2023 (06:48:28 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.1124.v1

Copper Based Antibacterial Compounds: Potential Targeting Pathways and Current Drug Design Trends.

Aixa M. Orta-Rivera, Yazmary Meléndez-Contés, Nataniel Rivera-Berríos, Adriana M. Gómez-Cardona, Andrés Ramos-Rodríguez, Claudia Cruz-Santiago, Christian González-Dumeng, Janangelis López, Jansteven Escribano, Jared J. Rivera-Otero, Josean Díaz-Rivera, Sebastián C. Díaz-Vélez, Zulemaría Feliciano-Delgado, Arthur D. Tinoco

Subject: Chemistry And Materials Science, Other Keywords: copper coordination; copper homeostasis; antibacterial; antibiotic.

Online: 28 April 2023 (05:38:16 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202304.0888.v1

HABS-controlled Growth of Aragonite Based Polymorphic Symbiotic CaCO3 Crystals in Emulsion

Weiwei He, Junqing Hu, Weihao Sun, Jiqiong Liu, Hongguang Guo, Changming Zhao, Qinggguo Wang, Xiangbin Liu, Meng Cai, Weiguang Shi

Subject: Chemistry And Materials Science, Other Keywords: aragonite; HABS; symbiotic crystals; superstructure; mineralization; kerosene emulsion

Online: 25 April 2023 (05:29:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0711.v1

Investigation of the Properties of Mo/ZSM-5 Catalysts Based on Zeolites With Microporous and Micro-Mesoporous Structure

Andrey A. Stepanov, Ludmila L. Korobitsyna, Alexander V. Vosmerikov

Subject: Chemistry And Materials Science, Other Keywords: methane dehydroaromatization; zeolite ZSM-5; micro-mesoporous structure; benzene

Online: 21 April 2023 (10:05:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0346.v1

The Influence of the Nature of the Dispersing Agent on the Interaction of DNA Nucleotides with the Surface of YSZ Nanoparticles and the Homogeneity of Lyophilites Based on Them

Aleksander S. Doroshkevich, Viktor S. Doroshkevich, Tatyana Yu. Zelenyak, Nelya V. Doroshkevich, Andriy I. Lyubchyk, Sergiy I. Lyubchyk, Svitlana B. Lyubchyk, Alisa A. Tatarinova, Anca Stanculescu, Dan Chicea, Carmen Mita, Nicoleta Cornei, Diana Mardare, Boris L. Oksengendler, Nadejda N. Nikiforova, Matlab N. Mirzayev, Evgeni P. Popov, Alexander A. Donkov, Vesna Teofilović, Bozena Jasinska, Le Hong Khiem

Subject: Chemistry And Materials Science, Other Keywords: immobilization of DNA molecules on the surface of dielectrics; interaction of nanopowders with nucleotides; molecular electronics; nanotechnology; molecular dynamics modeling; DNA conformation in an electric field; genotoxic effects

Online: 14 April 2023 (04:03:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0205.v1

The Shielding and Mechanical Properties of Tungsten/Epoxy Composites

Jun Xiang Zhang, Shi Wei Nie, Shuo Zhang, Tie Ming Xing, Hou Hua Xiong, Zheng Kui Zeng

Subject: Chemistry And Materials Science, Other Keywords: Tungsten; MCNP; Epoxy resin; Gamma rays; shielding

Online: 11 April 2023 (06:09:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202211.0276.v1

Evaluation of Surface-active Agent Hexadecyltrimethylammonium Bromide with Vertical Self-alignment Property to Align Liquid Crystals for Various Cell Gap Conditions

Jun Seok Ma, Jin Young Choi, Hyun Ji Shin, Jae Hwan Lee, Seung Won Oh, Wook Sung Kim

Subject: Chemistry And Materials Science, Other Keywords: homeotropic alignment; cell gap; self-alignment; liquid crystal phase shifter; antenna

Online: 15 November 2022 (06:29:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202210.0402.v1

q-RASAR Modeling of Cytotoxicity of TiO₂-based Multi-component Nanomaterials

Arkaprava Banerjee, Supratik Kar, Agnieszka Gajewicz-Skretna, Kunal Roy

Subject: Chemistry And Materials Science, Other Keywords: QSAR; q-RASAR; random forest; machine learning; TiO2-based nanoparticles

Online: 26 October 2022 (07:36:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0462.v2

Effect of Nano-Zirconia Addition on Mechanical Properties of Metakaolin-Based Geopolymer

Muhammad Saukani, Ayu Novia Lisdawati, Heri Irawan, Rendy Muhammad Iqbal, Dwi Marta Nurjaya, Sotya Astutiningsih

Subject: Chemistry And Materials Science, Other Keywords: Compressive strength; metakaolin; nanomaterial; refractory; zirconia

Online: 30 September 2022 (03:08:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0462.v1

Effect of Nano-Zirconia Addition on Mechanical Properties of Metakaolin-Based Geopolymer

Muhammad Saukani, Ayu Novia Lisdawati, Heri Irawan, Rendy Muhammad Iqbal, Dwi Marta Nurjaya, Sotya Astutiningsih

Subject: Chemistry And Materials Science, Other Keywords: Compressive strength; metakaolin; nanomaterial; refractory; zirconia

Online: 29 September 2022 (08:51:22 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202209.0379.v1

Drone Delivery of Dehydro-Sulfurization Utilizing Doubly-Charged Negative Ions of Nanoscale Catalysts Inspired by the Biomimicry of Bee Species’ Bio-Catalysis of Pollen Conversion to Organic Honey

Kelvin L. Suggs, Duminda K. Samarakoon, Alfred Msezane

Subject: Chemistry And Materials Science, Other Keywords: fullerene; graphene; molybdenum disulfide; carbon nanotubes; catalysts; density functional theory; enzymes; honeybee biomimicry; drones; depollution; doubly-charged negative ions

Online: 26 September 2022 (05:40:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0003.v1

Evaluation of Toxic Gas Generation, Smoke Generation, and Flammability in Flame-Retardant Plywood Combustion Tests

Hee-Jun PARK, Seok-Un JO

Subject: Chemistry And Materials Science, Other Keywords: flame-retardant plywood; flammability; toxic gas generation; smoke generation

Online: 1 September 2022 (03:50:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0250.v1

Preparation and Highly Enhanced Eelectrocaloric Effect in a Bimodal-Structured 0.9KNbO₃-0.1BaTiO₃ Solid Solution at Room Temperature

Hongfang Zhang, Liqiang Liu, Ju Gao, K.W. Kwok, Sheng-Guo Lu, Ling-bing Kong, Biaolin Peng, Fang Hou

Subject: Chemistry And Materials Science, Other Keywords: electrocaloric effect; abnormal grain growth; bimodal structure; grain-size distribution; polar nanodomain regions

Online: 17 June 2022 (05:25:50 CEST)

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Working Paper REVIEW

Chiroptical Sensing

Ani Ozcelik, Raquel Pereira-Cameselle, Nataša Poklar Ulrih, Ana G. Petrovic, José Lorenzo Alonso-Gómez

Subject: Chemistry And Materials Science, Other Keywords: chiroptical systems; theoretical simulations, chiral design; sensing applications

Online: 30 January 2020 (12:28:25 CET)

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Preprint REVIEW | doi:10.20944/preprints201911.0005.v1

Chiroptical Sensing

Ani Ozcelik, Raquel Pereira-Cameselle, Nataša Poklar Ulrih, Ana G. Petrovic, José Lorenzo Alonso-Gómez

Subject: Chemistry And Materials Science, Other Keywords: chiroptical systems; theoretical simulations, chiral design; sensing applications

Online: 1 November 2019 (09:37:41 CET)

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Preprint REVIEW | doi:10.20944/preprints201906.0304.v1

Pedicularis L. Genus: Systematics, Botany, Phytochemistry, Chemotaxonomy, Ethnopharmacology and Other

Claudio Frezza, Alessandro Venditti, Chiara Toniolo, Daniela De Vita, Ilaria Serafini, Alessandro Ciccòla, Marco Franceschin, Antonio Ventrone, Lamberto Tomassini, Sebastiano Foddai, Marcella Guiso, Marcello Nicoletti, Armandodoriano Bianco, Mauro Serafini

Subject: Chemistry And Materials Science, Other Keywords: Pedicularis L. genus; Orobanchaceae family; Phytochemistry; Chemotaxonomy; Ethnopharmacology

Online: 29 June 2019 (10:34:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0099.v1

A Comparison of Ethylene Tar-Derived Isotropic Pitches Prepared by Air Blowing and Nitrogen Distillation Method and Their Carbon Fibers

Kui Shi, Jianxiao Yang, Chong Ye, Hongbo Liu, Xuanke Li

Subject: Chemistry And Materials Science, Other Keywords: Carbon fiber; ethylene tar; isotropic pitch; air blowing

Online: 10 December 2018 (11:54:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0453.v1

Relationship between the Size and Inner Structure of AM Powder Particles

Kateřina Opatová, Ivana Zetková, Ludmila Kučerová

Subject: Chemistry And Materials Science, Other Keywords: additive manufacturing; FIB; EBSD; EDS; maraging steel

Online: 19 November 2018 (10:56:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0128.v1

DIY Materials and Circular Economy: A Case Study, Educating Industrial Designers for Sustainability

Jimena Alarcón, Andrea Llorens

Subject: Chemistry And Materials Science, Other Keywords: circular economy; education; reuse; sustainability; self-produced materials; waste

Online: 6 November 2018 (04:40:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0229.v1

High Performance n-Type Ag₂Se Film on Nylon Membrane for Flexible Thermoelectric Power Generator

Yufei Ding, Yang Qiu, Kefeng Cai, Qin Yao, Song Chen, Lidong Chen, Jiaqing He

Subject: Chemistry And Materials Science, Other Keywords: thermoelectric; flexible; n-type; Ag2Se; hot-pressing

Online: 13 September 2018 (05:11:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0018.v1

Advanced Level Preparation of Expanded Graphite, Lauric Acid, Stearic Acid for Heat Transfer and Solar Applications

Anutsek Sharma, S Karthikeyan, Ratchagar Prabhu, Karthikeyan Jagannathan

Subject: Chemistry And Materials Science, Other Keywords: SSPCM, Vacuum Drying, Microwave Acid Treatment, Solar Applications

Online: 3 September 2018 (09:57:39 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints201808.0133.v1

Multi-Analytical Investigation of Stains on Dimension Stones in Master Valentim’s Fountain, Brazil

Roberto Carlos da Conceição Ribeiro, Patrícia Marques Ferreira de Figueiredo, Daniel Silva Barbutti

Subject: Chemistry And Materials Science, Other Keywords: master Valentim’s fountain; gneiss; lioz limestone; conservation and restoration

Online: 7 August 2018 (05:18:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0395.v1

Influence of Different Meltable Binders on the Solid-State Behaviour and Dissolution Profiles of Solid Lipid Extrudates Processed Via Continuous Hot Melt Granulation

Santosh Gejage, Jaywant Pawar, Purnima Amin, Mohammed Maniruzzaman

Subject: Chemistry And Materials Science, Other Keywords: Niacin, Glyceryl Monostearate, Polymorphism, Melt viscosity, hot melt extrusion, Melt granulations, Sustained release

Online: 21 July 2018 (12:56:48 CEST)

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Mere similar grades of same excipients manufactured by two different manufacturers often differ significantly that they even have an impact on the variations in final product or dosage form. Solid lipids are one of the most available options as matrix former in sustained drug delivery. Due to their chemical and physical complexity, lipids may exhibit a complex behaviour (i.e. melting crystallization and polymorphism). The aim of this study was to evaluate the physical and chemical properties of two Glyceryl Monostearate (GMS) lipids (Geleol from Gattefosse and Capmul GMS 50K from Abitec Corp. USA) and how these properties may affect during melt granulation process for sustained release applications. Thermal processing was applied on GMS samples to understand the polymorphic nature and suitability as meltable binders. Niacin was used as model drug. A thorough evaluation of GMS samples and sustained release tablets was undertaken using analytical techniques such as differential scanning calorimetry (DSC), X-ray diffraction (XRD). Moreover, melt viscosity study assisted to apprehend the behaviour of GMS samples in hot melt extrusion processing. Surface morphology of the drug and extruded granules examined via SEM and AFM revealed high level of surface interaction and dense structure of drug inside lipid matrix. The DSC and XRD study confirmed that Geleol could not withstand the heat treatment applied during thecontinuous melt granulation processing. The shifting of stable β form to an unstable α form in Geleol was detected. In the contrary case, Capmul GMS 50K was able to withstand the heat treatment supported by the applied analytical techniques. Nonetheless,both GMS samples perform differently in final dosage form. This change in stable β form to an unstable α form affected dissolution profiles at 3 months storage in accelerated condition. This study helped to interpret the complex solid-state behaviour of solid lipid extrudates with different compositions, in order to the simply and outline a suitable formulation strategy for the development of lipid-based oral dosage forms.

Preprint ARTICLE | doi:10.20944/preprints201807.0157.v1

A Robust Fabrication Method for Amphiphilic Janus Particles via Immobilization on Polycarbonate Microspheres

Karthik Ananth Mani, Noga Yaakov, Yafit Itzhaik Alkotzer, Evgeni Zelikman, Guy Mechrez

Subject: Chemistry And Materials Science, Other Keywords: Janus particles; Amphiphilicity; Polycarbonate; Polymethylsilsesquioxane; Solvent displacement

Online: 9 July 2018 (16:23:43 CEST)

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Immobilizing particles on beads, fibers or filaments, when only one side is exposed to the reaction medium and therefore can be selectively functionalized, is a scalable and easy to control strategy for the fabrication of amphiphilic Janus particles. Here we describe a new, robust method for the fabrication of amphiphilic Janus particles based on immobilization of polymethylsilsesquioxane (PMSQ) particles on polycarbonate (PC), a high impact-resistance polymer with superior mechanical properties. The immobilization of the particles on the PC microspores is preformed via inverse solvent displacement method. PMSQ particles are added to a PC solution in tetrahydrofuran (THF), a good solvent for PC. The solution is then precipitated by the introduction of aqueous surfactant solution (anti solvent for PC) under an ultrasonic field. It is important to note that THF and water are miscible and do not form emulsion. During precipitation, PMSQ particles are assembled onto the surface of the PC spherical precipitates/microspheres. The exposed hemispheres of the PMSQ particles are then selectively silanized by (3-Aminopropyl)triethoxysilane (APTES) to introduce amine groups on their surface. To increase the polarity of the functionalized hemispheres, the amine groups are further modified to introduce carboxyl groups. SEM characterization confirms the fine embedment of PMSQ particles onto the PC microspheres. Covalent attachment of silica nanoparticles (NPs) to the functionalized hemispheres of the resulting particles along with fluorescent confocal microscopy conclusively proof the successful fabrication of amphiphilic Janus particles. The immobilization of particles onto highly rigid polymeric microspheres such as PC may pave the way to the development of a robust fabrication procedure with high resistance to temperature fluctuations and harsh mixing conditions that can arise during preparation. This method can be implemented toward a large variety of other synthetic commercial polymers such as polyamide, polyether sulfones, Polyether ether ketone or similar.

Preprint ARTICLE | doi:10.20944/preprints201807.0107.v1

An Integrated Wireless, Full-Range, Capacitive Sensor System Designed for Measuring Ventricular Pressure

Natiely Hernández-Sebastián, Daniela Díaz-Alonso, Francisco-Javier Renero-Carrillo, Noe Villa-Villaseñor, Wilfrido Calleja-Arriaga

Subject: Chemistry And Materials Science, Other Keywords: RF MEMS; pressure sensor; MEMS resonators; implantable BioMEMS; flexible electronics; touch mode capacitive sensor

Online: 6 July 2018 (07:42:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0097.v1

Study of Low Frequency Phonon Modes in YBCO System

Jing Yu, Liang Li, han zhang

Subject: Chemistry And Materials Science, Other Keywords: collective vibration; raman spectroscopy; superconductivity; CuO2 plane; YBCO system

Online: 6 June 2018 (13:11:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0332.v1

Microdrop Deposition Technique: Preparation and Characterization of Diluted Suspended Particulate Samples

Salvatore Macis, Giannantonio Cibin, Valter Maggi, Giovanni Baccolo, Dariush Hampai, Barbara Delmonte, Alessandro D'Elia, Augusto Marcelli

Subject: Chemistry And Materials Science, Other Keywords: ultra-dilution; droplets; water; evaporation; X-ray fluorescence

Online: 24 May 2018 (05:43:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints201804.0187.v1

Salts of Therapeutic Agents: Chemical, Physicochemical and Biological Considerations

Deepak Gupta, Deepak Bhatia, Vivek Dave, Vijaykumar Sutariya, Sheeba Varghese Gupta

Subject: Chemistry And Materials Science, Other Keywords: chemistry; salt; water solubility; routes of administration; physicochemical; stability; degradation

Online: 16 April 2018 (05:29:24 CEST)

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Preprint REVIEW | doi:10.20944/preprints201803.0012.v1

From Protein Features to Sensing Surfaces

Greta Faccio

Subject: Chemistry And Materials Science, Other Keywords: surface functionalization; biosensor functionalization; protein immobilization; protein structure analysis; protein immobilization

Online: 1 March 2018 (16:43:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints201802.0039.v1

Optical Properties of Complex Plasmonic Materials Studied with Extended Effective Medium Theories Combined with RCWA

Elie Nadal, Noemi Barros, Hervé Glénat, Hamid Kachkachi

Subject: Chemistry And Materials Science, Other Keywords: Gold nanoparticles, plasmon, nanocomposites, laser interferometry, Maxwell-Garnett theory, gratings, diffraction, RCWA.

Online: 5 February 2018 (15:33:12 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints201710.0106.v1

Room-Temperature H₂ Gas Sensing Characterization of Graphene-Doped Porous Silicon via a Facile Solution Dropping Method

Nu Si A Eom, Hong-Baek Cho, Yoseb Song, Woojin Lee, Tohru Sekino, Yong-Ho Choa

Subject: Chemistry And Materials Science, Other Keywords: graphene-doped porous silicon; p-type silicon; hydrogen sensor; sensing mechanism

Online: 16 October 2017 (08:00:59 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints201707.0095.v1

Has the Time Come for Preprints in Chemistry? A Perspective onto a Meaningful Change

Piera Demma Carà, Rosaria Ciriminna, Mario Pagliaro

Subject: Chemistry And Materials Science, Other Keywords: prepublishing; preprint; chemistry; open science

Online: 31 July 2017 (16:05:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201704.0178.v1

Magnetic Characterization of Hypervalent Chromium Intermediates in the Reduction of Chromium(VI) by Glutathione in Acidic Solutions

Roberto A. Marín, Stanislaw Kolesnik

Subject: Chemistry And Materials Science, Other Keywords: chromium carcinogenesis; Cr(III); Cr(IV); Cr(V); Cr(VI); glutathione; SQUID; Magnetic Property Measuring System

Online: 27 April 2017 (04:04:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0155.v1

Molecularly Imprinted Polymers for Selective Extraction of Oblongifolin C from Garcinia yunnanensis Hu

Wang Liping, Fu Wenwei, Shen Yunhui, Tan Hongsheng, Xu Hongxi

Subject: Chemistry And Materials Science, Other Keywords: molecularly imprinted polymers; solid-phase extraction; oblongifolin C; guttiferone K; Garcinia yunnanensis Hu

Online: 20 March 2017 (09:38:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0064.v1

Identification of Secondary Phases in Cu₂ZnSnS₄ Layers by In-depth Resolved X-ray Photoelectron Spectroscopy Analysis

Xianfeng Zhang, M. Kobayashi

Subject: Chemistry And Materials Science, Other Keywords: secondary phases; CZTS film; XPS

Online: 12 January 2017 (11:04:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints201611.0021.v1

Molecularly Imprinted Quartz Crystal Microbalance Sensor (QCM) for Bilirubin Detection

Çiğdem Çiçek, Fatma Yılmaz, Erdoğan Özgür, Handan Yavuz, Adil Denizli

Subject: Chemistry And Materials Science, Other Keywords: molecular imprinting technique; bilirubin; QCM; PHEMA; nanosensor

Online: 2 November 2016 (17:34:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints201609.0125.v2

High Responsivity in GaN Ultraviolet Photodetector Achieved by Growing on a Periodic Trapezoid Column-Shape Patterned Sapphire Substrate

Kuan-Ting Liu, Shoou-Jinn Chang, Sean Wu

Subject: Chemistry And Materials Science, Other Keywords: GaN ultraviolet photodetector; periodic trapezoid column-shape patterned sapphire substrate; responsivity; UV-to-visible rejection ratio

Online: 18 October 2016 (08:19:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201610.0006.v1

Radiation Shielding Property of Concrete Using Electric Arc Furnace Oxidizing Slag Aggregate

Han-Seung Lee, Hee-Seob Lim, Jae-Seok Choi

Subject: Chemistry And Materials Science, Other Keywords: steel slag; electric arc furnace slag; magnetite; radiation shielding concrete; concrete; EAF; aggregate

Online: 4 October 2016 (09:28:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201609.0125.v1

High Responsivity in GaN Ultraviolet Photodetector Achieved by Growing on a Periodic Trapezoid Column-Shape Patterned Sapphire Substrate

Kuan-Ting Liu, Shoou-Jinn Chang, Sean Wu

Subject: Chemistry And Materials Science, Other Keywords: GaN ultraviolet photodetector; periodic trapezoid column-shape patterned sapphire substrate; responsivity; UV-to-visible rejection ratio

Online: 30 September 2016 (09:40:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0120.v1

Large Scale Screening of Southern African Plant Extracts for the Green Synthesis of Gold Nanoparticles using Microtitre-Plate Method

Abdulrahman M. Elbagory, Christopher N. Cupido, Mervin Meyer, Ahmed Hussein

Subject: Chemistry And Materials Science, Other Keywords: green nanotechnology; gold nanoparticles; biosynthesis; high resolution transmission electron microscopy; Cape flora

Online: 11 August 2016 (09:53:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0062.v1

Antidiarrheal Thymol Derivatives from Ageratina glabrata. Structure and Absolute Configuration of 10-Benzoyloxy-8,9-epoxy-6-hydroxythymol Isobutyrate

Celia Bustos-Brito, Valeria J. Vázquez-Heredia, Fernando Calzada, Lilian Yépez-Mulia, José S. Calderón, Simón Hernández-Ortega, Baldomero Esquivel, Normand García-Hernández, Leovigildo Quijano

Subject: Chemistry And Materials Science, Other Keywords: Ageratina glabrata; thymol derivatives; antiprotozoal and antidiarrheal properties

Online: 6 August 2016 (11:26:06 CEST)

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Chemistry and Materials Science