In the present paper, the frequency shift and line widths of acetonitrile/H2O, DMSO/H2O and acetone/H2O aqueous binary solutions at different concentration were measured by Raman spectroscopy. The experimental results were analyzed by mixture model and empirical formula of line widths. The results show that the stronger the hydrogen bond interaction, the greater the line widths of Raman spectra in the three aqueous binary solutions; the line width of Raman spectra not only is affected by concentration fluctuation, but also is affected by hydrogen bond. In addition, the experimental data points are again nicely fitted using the empirical formula.
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Pharmaceutics
December 2024
Dipartimento di Farmacia, Salute e Scienze della Nutrizione, Università della Calabria, Arcavacata di Rende, 87036 Cosenza, Italy.
Hypertension affects 32% of adults worldwide, leading to a significant global consumption of cardiovascular medications. Atenolol, a β-adrenergic receptor blocker, is widely prescribed for cardiovascular diseases such as hypertension, angina pectoris, and myocardial infarction. According to the Biopharmaceutics Classification System (BCS), atenolol belongs to Class III, characterized by high solubility but low permeability.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Key Laboratory of Special Functional Aggregated Materials of Ministry of Education, Shandong Key Laboratory of Advanced Silicone Materials and Technology, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
The development of dynamic covalent materials with repairability, reprocessability, and recyclability is crucial for sustainable development. In this work, we report a new strategy to adjust the thermomechanical properties of boronic ester cross-linked poly(β-hydroxyl amine)s through side-group engineering. By tuning the side groups of the poly(β-hydroxyl amine)s, we have developed self-healable, reprocessable, and shape-programmable materials.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
School of Physical & Chemical Sciences, Queen Mary University of London, Joseph Priestley Building, Mile End Road, London E1 4NS, UK.
Microgels, combining the properties of hydrogels and microparticles, are emerging as versatile materials for varied applications such as drug delivery and sensing, although the precise control of particle size remains a challenge. Advances in synthetic methodologies have provided new tools for tailoring of properties, however costs and scalability of the processes remains a limitation. We report here the water-based synthesis of a library of -isopropylacrylamide-based microgels covalently crosslinked with varying contents of ,-methylenebisacrylamide.
View Article and Find Full Text PDFPharmaceuticals (Basel)
December 2024
COSYS/IMSE, Université Gustave Eiffel, Champs-sur-Marne, 77454 Marne-la-Vallée, Cedex 2, France.
RNA polymerase (NS5B), serves as a crucial target for pharmaceutical interventions aimed at combating the hepatitis C virus (HCV), which poses significant health challenges worldwide. The present research endeavors to explore and implement a variety of advanced molecular modeling techniques that aim to create and identify innovative and highly effective inhibitors that specifically target the RNA polymerase enzyme. In this study, a QSAR investigation was carried out on a set of thirty-eight isothiazole derivatives targeting NS5B inhibition and thus hepatitis C virus (HCV) treatment.
View Article and Find Full Text PDFMolecules
December 2024
Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasourg, Inserm UMR_S 1121, CNRS EMR 7003, Université de Strasbourg, 1 Rue Eugène Boeckel, F-67000 Strasbourg, France.
Specific ion effects on the structure and function of many biological macromolecules, their associations, colloidal systems, interfacial phenomena, and even "simple" electrolytes solutions are ubiquitous. The molecular origin of such phenomena is discussed either as a salt-induced change of the water structure (the hydrogen bond network) or some specific (solvent mediated) interactions of one or both of the ions of the electrolyte with the investigated co-solute (macromolecules or colloidal particles). The case of hydrogels is of high interest but is only marginally explored with respect to other physico-chemical systems because they are formed through the interactions of gelling agents in the presence of water and the added electrolyte.
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