Use of Quadruple Hydrogen Bonding as the Switching Phase in Thermo- and Light-Responsive Shape Memory Hydrogel

被引：22

作者：

Song, Yufang ^{[1
]}

Chen, Yiming ^{[1
]}

Chen, Ran ^{[1
]}

Zhang, Hongji ^{[1
]}

Shi, Dongjian ^{[1
]}

Wang, Yang ^{[1
]}

Dong, Weifu ^{[1
]}

Ma, Piming ^{[1
]}

Zhao, Yue ^{[2
]}

机构：

[1] Jiangnan Univ, Sch Chem & Mat Engn, Minist Educ, Key Lab Synthet & Biol Colloids, Wuxi 214122, Jiangsu, Peoples R China

[2] Univ Sherbrooke, Dept Chim, Sherbrooke, PQ J1K 2R1, Canada

来源：

ACS APPLIED POLYMER MATERIALS | 2021年 / 3卷 / 06期

基金：

加拿大自然科学与工程研究理事会; 中国博士后科学基金;

关键词：

UPy; switching phase; thermal reversible; hydrogel; shape memory; SUPRAMOLECULAR HYDROGELS; NETWORKS; POLYMERS; BEHAVIOR; TOUGH;

D O I：

10.1021/acsapm.1c00230

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

2-Ureido-4[1H]-pyrimidinone (UPy) is widely de ployed in bulk materials for switching phase or physical cross-linking because of exceptional quadruple H-bond strength and thermal reversibility. However, utilization of UPy dimers as the switching phase to prepare shape memory hydrogels has been rarely explored due to the competition with water molecules. Herein, hydrogels with high UPy contents are synthesized and exhibit excellent shape memory ability, even at high water contents. By introduction of tetraphenylporphyrin into hydrogels, the shape memory behavior can further be controlled by light through a photothermal effect. This finding offers possibilities for applications of UPy in developing shape memory hydrogels.

引用

页码：2884 / 2888

页数：5

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