Azo-Bridged Dextran: A Photoresponsive Sustainable Material with Photo-Tunable Mechanical Properties

IF 5.4 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biomacromolecules Pub Date : 2025-02-06 DOI:10.1021/acs.biomac.4c0150810.1021/acs.biomac.4c01508

Konstantin Knaipp, Rupert Kargl, Damjan Makuc, Janez Plavec, Ema Žagar, Karin Stana Kleinschek* and Georg Gescheidt*,

引用次数: 0

Abstract

We report on the synthesis, characterization, and properties of dextran polymers, which are covalently bridged/cross-linked by azobenzene moieties. The reversible photoactivity of the azo moiety is retained in the polymers, and the kinetics of the E/Z isomerization depend on the dextran/azobenzene ratio. Together with the simple preparation, our approach provides convenient access to photoresponsive sustainable materials. Moreover, based on the water-soluble polymers, we have prepared photoresponsive hydrogels, which soften upon UV irradiation. Our findings are based on spectroscopy (UV/vis, IR, and NMR/DOSY), size exclusion chromatography, and rheology.

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偶氮桥接右旋糖酐：具有光可调机械性能的光响应可持续材料

我们报道了一种由偶氮苯共价桥接/交联的葡聚糖聚合物的合成、表征和性能。偶氮部分的可逆光活性保留在聚合物中，E/Z异构化的动力学取决于右旋糖酐/偶氮苯的比。加上简单的制备，我们的方法为光响应可持续材料提供了方便的途径。此外，在水溶性聚合物的基础上，我们制备了光响应性水凝胶，它在紫外线照射下会软化。我们的发现是基于光谱学（UV/vis， IR和NMR/DOSY），尺寸排除色谱和流变学。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.