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1',2,3,3',4,4',6-Hepta-O-benzyl-6'-N-methacryloyl-6'-deoxysucrose 1, 6'-deoxy-6'-N-methacryloyloxyethylureido sucrose 2 and 6,6'-dideoxy-6,6'-N-dimethacryloyloxyethylureido sucrose 3 have been homo-polymerized and copolymerized with styrene by a free radical process, yielding polymer materials with pendant sucrose moieties, attached to the polymer backbone via amide linkages. The results demonstrated that varying the structural features of the monomers, greatly affected the thermal and rheological properties of the polymers. The polymer materials obtained have been characterized by NMR, MALDI-TOF, DSC, AFM and EWC (equilibrium water content). The efficient synthesis of the three novel, regioisomerically pure, N-methacryloylamide sucrose-containing monomers (1, 2 and 3) have been described.
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http://dx.doi.org/10.1016/j.carbpol.2014.03.050 | DOI Listing |
Adv Sci (Weinh)
March 2025
Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA.
There is a critical need for novel composite materials for high-performance chemical filtration and detoxification of organophosphonates (OPs) and other harmful compounds found in nerve agents, pesticides, and industrial processes. In this work, rapid hydrolysis of OPs using high-surface-area zirconium-based MOF-aerogel composites is demonstrated. Using a unique surfactant-templated solvothermal synthesis method, mesoporous UiO-66-NH grown on the fibers within a polyacrylonitrile (PAN)/polyvinylpyrrolidone (PVP) nanofibrous sponge can produce a 3D MOF-polymer matrix with a specific surface area of up to 900 m g -almost 2X larger than the highest previously reported values while maintaining robust mechanical integrity.
View Article and Find Full Text PDFAdv Sci (Weinh)
March 2025
Advanced Materials Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China.
Consistently arranging molecules within single-walled carbon nanotube (SWCNT) templates shows promise for creating advanced 1D heterostructures, but diameter variations in raw SWCNTs pose a significant challenge. In this work, a precise synthesis of C fullerene-filled SWCNTs (C@SWCNTs) is achieved through vapor-phase filling followed by polymer sorting. As the SWCNT diameter increases, C molecules first stack in a single chain, then form unusual configurations, including staggered double chains and double helices-configurations not observed in bulk C crystals.
View Article and Find Full Text PDFBMC Oral Health
March 2025
Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Background: Effective and durable bonding of immediate dentin sealing (IDS) is a crucial factor in the success of adhesive-bonded restorations. This study aimed to investigate the influence of chlorhexidine (CHX) and benzalkonium chloride (BAC) pretreatments on the immediate and aged bond strengths of a universal adhesive used in IDS across two etching modes.
Methods: Flat dentin surfaces were obtained from 120 molars and divided into six groups based on pretreatments (no treatment, CHX, and BAC) in two etching modes (etch-and-rinse (E&R) and self-etch (SE)) using All Bond Universal, in conjunction with a hydrophobic resin layer.
Nat Commun
March 2025
Innovation Research Center for AIE Pharmaceutical Biology, Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 511436, China.
Multimodal phototheranostics utilizing single molecules offer a "one-and-done" approach, presenting a convenient and effective strategy for cancer therapy. However, therapies based on conventional photosensitizers often suffer from limitations such as a single photosensitizing mechanism, restricted tumor penetration and retention, and the requirement for multiple irradiations, which significantly constrain their application. In this report, we present an aggregation-induced emission luminogen (AIEgen) bacteria hybrid bionic robot to address above issues.
View Article and Find Full Text PDFInt J Biol Macromol
March 2025
Fiber and Biopolymer Research Institute, Texas Tech University, Lubbock, TX, USA. Electronic address:
High-pressure CO (HPCD) technology has emerged as an environmentally sustainable approach for processing natural polymers such as cellulose, chitin, and chitosan. These polymers, valued for their abundance, biodegradability, and renewability compared to petroleum-based materials, provide a promising foundation for green technologies when combined with HPCD. In this mini review, we begin with an overview of the sources and structures of cellulose, chitin, and chitosan, followed by a discussion of the principles of HPCD and its functionality and role in treating these natural polymers.
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