Novel high-temperature thermochromic polydiacetylene material and its application as thermal indicator  

作　　者：Zhiqing Ge Zuxiong Pan Shuo Yan Baoying Zhang Xiangyu Shen Mozhen Wang Xuewu Ge 

机构地区：[1]Key Laboratory of Precision and Intelligent Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Chemical Letters》2024年第11期461-464,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51973205);the Fundamental Research Funds for the Central Universities(Nos.WK9110000066,WK3450000005 and WK3450000006)。

摘　　要：The design and synthesis of organic high-temperature reversible thermochromic materials is one of the difficult issues in the field of organic chromic materials.In this paper,four diacetylene monomers named DBA-PCDA,TBA-PCDA,DBE-PCDA and TBE-PCDA,each containing multiple diacetylene units,were synthesized from 10,12-pentacosadiynoic acid(PCDA)through the amidation or esterification reactions,using 4,4'-diaminobiphenyl,1,3,5-tris(4-aminophenyl)benzene,4,4'-dihydroxybiphenyl,and 1,3,5-tris(4-hydroxyphenyl)benzene as bridging units.The effects of functional groups that can form hydrogen bond andπ-πinteractions on the solid-state polymerization properties of monomers and the thermochromic properties of the corresponding PDAs were investigated.The results show that only DBA-PCDA and TBAPCDA,which contain functional groups that can form hydrogen bonding interactions,can be polymerized under 254-nm UV irradiation.The corresponding poly(DBA-PCDA)exhibits reversible thermochromic property even heated up to 200℃,showing a potential application in the field of high-temperature thermal indicator above 100℃.This work provides a new perspective to the development of PDA with high-temperature reversible thermochromic property.

关 键 词：POLYDIACETYLENE High-temperature thermochromism Melting behavior π-πinteractions 

分 类 号：TB34[一般工业技术—材料科学与工程]