To overcome shortcomings of the traditional freeze-thaw method for PVA hydrogel preparation, we develop a one-step mild method, which induces PVA crystallization to form hydrogels through small molecules containing hydroxyl and carboxyl groups. The obtained hydrogels showed high mechanical properties, untypical plasticity with short gelation time and repeatable sol-gel transformation.
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http://dx.doi.org/10.1039/d1cc00578b | DOI Listing |
Org Lett
January 2025
School of Astronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710065, China.
The single-atom skeletal editing technology is an efficient method for constructing molecular skeletons, which has broad coverage in synthetic chemistry. However, its potential in the preparation of energetic heterocyclic molecules is grossly underexplored. In this work, an unexpected one-step reaction for the synthesis of novel energetic molecules was discovered which combines single-atom skeletal editing, -dinitromethyl functionalization, and zwitterionization in one step.
View Article and Find Full Text PDFJ Biotechnol
January 2025
Analysis and Testing Center, Nanjing Normal University, Nanjing, 210023, China. Electronic address:
Chondroitin sulfate (CS) is a structurally complex anionic polysaccharide widely used in medical, cosmetic and food applications. Enzymatic catalysis is an important strategy for synthesizing CS with uniform chain lengths and well-defined structures. However, the industrial application of glycosyltransferases is hindered by limitations such as low expression yields, poor stability, and challenges in reuse.
View Article and Find Full Text PDFBMC Chem
January 2025
The Affiliated Ganzhou Hospital, Jiangxi Medical College, Nanchang University, Ganzhou, 341000, Jiangxi, People's Republic of China.
J Pharm Biomed Anal
January 2025
INTEC (Universidad Nacional del Litoral-CONICET), Predio CCT CONICET-Santa Fe, RN 168, Santa Fe S3000GLN, Argentina. Electronic address:
Infections with the dengue virus affect more than 100 million people every year. The infected can present a mild form of the disease or a severe form, which can, eventually, lead to death. Dengue prevails in tropical and subtropical regions, although increased incidence has been observed in the last years in tempered climates.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.
Reported herein is the synthesis of a novel chiral dicarboxylic ligand for Mn(II) and the application of the Mn complex to the highly enantio- and position-selective epoxidation of C═C under mild conditions, even with polyolefinic substrates. A stereomechanistic basis for asymmetric induction is suggested.
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