碳二酰亚胺燃料瞬态水凝胶的光响应聚合物

IF 3.9 2区 化学 Q2 POLYMER SCIENCE
Ibrahim O. Raji , Torin C. Wilcox , C. Scott Hartley , Dominik Konkolewicz
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引用次数: 0

摘要

合成了光响应和碳二亚胺响应水凝胶。利用邻硝基苯基(ONB)在聚合物主链中保护羧酸,建立了“与”门。交联仅在UV刺激光裂解ONB基团和碳二亚胺燃料诱导酸酐键的情况下才能实现。在有水存在的情况下,酸酐键最终水解成羧酸,系统回到溶液状态。采用振荡流变学方法研究了失平衡水凝胶的力学性能,考察了脱保护效率、碳二亚胺浓度和链结构对水凝胶模量和脱交联时间的影响。随着碳二亚胺浓度的增加和脱保护效率的提高,模量增大,脱交联时间延长。这些发现揭示了光反应化学燃料软材料的新可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Photoresponsive polymers for carbodiimide-fueled transient hydrogels†

Photoresponsive polymers for carbodiimide-fueled transient hydrogels†
Light- and carbodiimide-responsive hydrogels were synthesized. An “AND” gate was developed using ortho-nitrobenzyl (ONB) protected carboxylic acids in the polymer backbone. Crosslinking was only realized in the presence of both UV stimulus to photocleave the ONB group and carbodiimide fuels to induce anhydride bonds. In the presence of water, the anhydride bonds eventually hydrolyze to carboxylic acids and the system returns to the solution state. The mechanical properties of the out-of-equilibrium hydrogels were investigated using oscillatory rheology to examine the effects of deprotection efficiency, carbodiimide concentration and chain architecture on the hydrogels’ moduli and decrosslinking time. Higher moduli and longer decrosslinking times were found with increased carbodiimide concentration and deprotection efficiency. These discoveries unveil new possibilities for photoresponsive chemically fueled soft materials.
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来源期刊
Polymer Chemistry
Polymer Chemistry POLYMER SCIENCE-
CiteScore
8.60
自引率
8.70%
发文量
535
审稿时长
1.7 months
期刊介绍: Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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