Highly Stretchable and Tunable Thermo-fluorochromic Polymer Elastomer through Eu^(3+)Dynamic Coordination Cross-linking  

作　　者：Qiu-Li Tan Kai Gou Jing-Zhi Tang Ming-Hui Wei Chong Wang Yi-Jing Nie Geng-Sheng Weng 

机构地区：[1]School of Materials Science and Chemical Engineering,State Key Laboratory Base of Novel Functional Materials and Preparation Science,Ningbo University,Ningbo,315211,China [2]Institute of Polymer Materials,School of Materials Science and Engineering,Jiangsu University,Zhenjiang,212013,China

出　　处：《Chinese Journal of Polymer Science》2024年第10期1449-1458,I0008,共11页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.22175100);the Natural Science Foundation of Zhejiang Province(No.LY22E030001);the Natural Science Foundation of Ningbo(No.2022J102)。

摘　　要：Thermochromic polymers with tunable thermochromism,high stretchability and mechanical strength are of interests for optical information storage and encryption.In this work,we demonstrate a new design of thermo-fluorochromic carboxylated nitrile butadiene rubber(XNBR)elastomer cross-linked by Eu^(3+)-COOH dynamic coordination with deprotonated imidazole(DPIm)as the ancillary ligand.The presence of DPIm not only improves the mechanical strength and stretchability,but also dramatically intensifies the fluorescence emission and lifetime of the Eu-containing elastomer.The elastomer behaves reversible thermo-fluorochromism with easily tunable transition temperature and emission intensity by the simple change of the deprotonation degree of imidazole.The facile tunable thermo-fluorochromism,exceptional mechanical strength,and high stretchability(up to about 5000%)enable the Eu-containing XNBR elastomer with potential applications in soft electronics where optical information storage and encryption are required.

关 键 词：Dynamic coordination THERMOCHROMISM Highly stretchable ELASTOMER Europium 

分 类 号：TQ334[化学工程—橡胶工业]