华东理工大学学报（自然科学版）2018，Vol.44Issue(2)：195-201,218,8.DOI:10.14135/j.cnki.1006-3080.20170316002
D-A型三苯胺-苯并噁唑聚合物的合成与性能
Synthesis and Properties of D-A Type Triphenylamine-Benzoxazole Polymer
张恒达 1孙宾贺 1李欣欣1
作者信息
- 1. 华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237
- 折叠
摘要
Abstract
TPA-functionalized poly(triphenylamine benzobisoxazole)precursor(TPA-PrePBO)was synthesized by polycondensation of 4,6-di(tert-butyldimethylsilylamino)-1,3-di(tert-butyldimethylsiloxy) benzene(TBS-DAR)and 4,4'-diacid chloride triphenylamine,followed by the thermal cyclization reaction, high molecular weight D-A photoelectric material poly(triphenylamine benzobisoxazole)s(TPA-PBO)was successfully prepared for the first time.The precursor TPA-PrePBO has excellent solubility in convention-al organic solvents such as N-methylpyrrolidone(NMP),N,N-dimethylacetamide(DMAc)and dimethyl-sulfoxide(DMSO).The intrinsic viscosity can reach 1.59 dL/g and the polymer solution can be casted into a flexible and tough film due to the excellent solubility of the TPA-prePBO.The polymer can be conven-iently provided in various forms by spin-on or dip-coating processes.The photophysical properties of TPA-PBO was investigated:the maximum UV-visible absorption is at 486 nm,the excitation wavelength of flu-orescence is at 553 nm,and the band gap is only 2.20 eV,w hich is much smaller than those of triphenyl-amine-polyimide(TPA-PI)and traditional PBO.Moreover,TPA-PBO polymer had high thermal stability and the initial decomposition temperature in the nitrogen atmosphere could reach 527 ℃,showing great potential to work long hours in harsh and complex environments.These studies demonstrate that TPA-PBO can be a new type of organic optoelectronic material with high stability,low excitation voltage and property of easily process.关键词
苯并唑类共聚物/三苯胺/供体-受体/光电材料Key words
benzoxazole-based copolymer/triphenylamine/donor-acceptor/photoelectric materialma-terial分类
化学化工引用本文复制引用
张恒达,孙宾贺,李欣欣..D-A型三苯胺-苯并噁唑聚合物的合成与性能[J].华东理工大学学报（自然科学版）,2018,44(2):195-201,218,8.
