Heat- and Light-Responsive Materials Through Pairing Dynamic Thiol-Michael and Coumarin Chemistry

被引：14

作者：

Chakma, Progyateg ^{[1
]}

Wanasinghe, Shiwanka V. ^{[1
]}

Morley, Colleen N. ^{[1
]}

Francesconi, Sebastian C. ^{[1
]}

Saito, Kei ^{[2
]}

Sparks, Jessica L. ^{[3
]}

Konkolewicz, Dominik ^{[1
]}

机构：

[1] Miami Univ, Dept Chem & Biochem, 651 E High St, Oxford, OH 45056 USA

[2] Kyoto Univ, Grad Sch Adv Integrated Studies Human Survivabil, Sakyo Ku, Yoshida Nakaadachicho 1, Kyoto 6068306, Japan

[3] Miami Univ, Dept Chem Paper & Biomed Engn, 650 E High St, Oxford, OH 45056 USA

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2021年 / 42卷 / 18期

基金：

美国国家科学基金会;

关键词：

coumarin; covalent adaptable networks; dynamic bonding; photochemistry; responsive materials; self‐ healing materials; thiol– Michael bonding;

D O I：

10.1002/marc.202100070

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Covalent adaptable networks (CANs) based on the thiol-Michael (TM) linkages can be thermal and pH responsive. Here, a new vinyl-sulfone-based thiol-Michael crosslinker is synthesized and incorporated into acrylate-based CANs to achieve stable materials with dynamic properties. Because of the reversible TM linkages, excellent temperature-responsive re-healing and malleability properties are achieved. In addition, for the first time, a photoresponsive coumarin moiety is incorporated with TM-based CANs to introduce light-mediated reconfigureability and postpolymerization crosslinking. Overall, these materials can be on demand dynamic in response to heat and light but can retain mechanical stability at ambient condition.

引用

页数：6

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