偶联噻吩引入对三苯胺成膜性提高及电致变色性能增强

doi:10.3866/PKU.WHXB201302282

物理化学学报 >> 2013, Vol. 29 >> Issue (05): 996-1002.doi: 10.3866/PKU.WHXB201302282

偶联噻吩引入对三苯胺成膜性提高及电致变色性能增强

欧阳密, 付志艳, 吕晓静, 陈欢乐, 胡彬, 夏旭峰, 张诚

绿色化学合成国家重点实验室培育基地, 科技部能源材料及应用国际科技合作基地, 浙江工业大学化学工程与材料学院浙江, 杭州 310014

收稿日期:2012-12-07 修回日期:2013-02-27 发布日期:2013-04-24
通讯作者: 张诚 E-mail:czhang@zjut.edu.cn
基金资助:
国家重点基础研究发展计划(973)前期专项项目(2010CB635108, 2011CBA00700), 国际科技合作重点项目计划(2012DFA51210)及国家自然科学基金(51203138, 51273179)资助

Enhanced Film-Forming and Electrochromic Properties by Incorporating Bithiophene into Triphenylamine

OUYANG Mi, FU Zhi-Yan, LÜ Xiao-Jing, CHEN Huan-Le, HU Bin, XIA Xu-Feng, ZHANG Cheng

State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, International Science & Technology Cooperation Base of Energy Materials and Application, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China

Received:2012-12-07 Revised:2013-02-27 Published:2013-04-24
Supported by:
The project was supported by the National Key Basic Research Program of China (973) (2010CB635108, 2011CBA00700), International Science and Technology Cooperation Program, China (2012DFA51210), and National Natural Science Foundation of China (51203138, 51273179).

摘要/Abstract

摘要：

合成了一种以三苯胺(TPA)为核、偶联噻吩为端基的有机小分子4,4'4?-三[4-(2-联噻吩基)苯基]胺(TBTPA), 并通过电化学聚合得到其相应的聚合物PTBTPA. 运用电化学工作站和紫外-可见光谱仪连用对该聚合物膜的光谱电化学性质进行了测试. 与先前已报道的三[4-(2-噻吩基)苯基]胺(TTPA)相比, TBTPA呈现出更好的电化学氧化还原活性. 在电化学聚合过程中, PTBTPA膜呈现出更好的成膜性能且在不同的电位下可以显示三种颜色(深橙色、橄榄绿、暗灰色). 此外, 光谱电化学测试结果表明, 与先前报道的PTTPA相比, PTBTPA具有更好的电致变色(EC)性能, 高的颜色对比度(44.7%), 更高的透射对比度(ΔT, 在720 及1100 nm处对比度分别为49%和52%)及较快的响应时间(在720 nm时为0.93 s, 在1100 nm 时为0.91 s), 同时, PTBTPA具有更高的着色效率(720 nm时为198 cm²·C^-1, 1100 nm时为285 cm²·C^-1). 从扫描电镜(SEM)照片得出PTBTPA薄膜呈现微球颗粒堆积形貌, 颗粒粒径为500 nm左右, 比PTTPA的粒径小. 良好的性能表明PTBTPA在电致变色器件上具有很大的应用前景.

关键词: 三苯胺核, 电化学聚合, 成膜性, 电致变色, 高对比度

Abstract:

An electrochromic (EC) material consisting of triphenylamine (TPA) core and peripheral bithiophene groups was synthesized, and the corresponding polymer was prepared by electrochemical oxidative cross-linking. The electrochemical properties of the 4,4',4?-tris[4-(2-bithienyl)phenyl]amine (TBTPA) monomer, and spectroelectrochemical and electrochromic properties of the poly(4,4',4?-tris [4-(2-bithienyl)phenyl]amine) (PTBTPA) polymer, were also systematically investigated. TBTPA possessing two thiophene groups exhibited better redox reversibility than that of the reported tris[4-(2-thienyl)phenyl] amine (TTPA). During electropolymerization, PTBTBA exhibited excellent film-forming property and strong adhesion to the ITO electrode, satisfying the basic requirements for achieving high EC performance. PTBTPA exhibited three different colors under various potentials (darkorange, olivegreen and dimgray). PTBTPA indicated enhanced EC performances and a higher contrast ratio of 44.7% compared with that of reported poly(tris[4-(2-thienyl)phenyl]amine) (PTTPA). PTBTPA also exhibited a higher optical contrast (ΔT) of 49% and 52% at 720 and 1100 nm, respectively. It showed fast switching responses of 0.93 and 0.91 s at 720 and 1100 nm, respectively, and higher coloration efficiencies of 198 and 285 cm²·C^-1 at 720 and 1100 nm, respectively. Scanning electron microscopy (SEM) revealed that the PTBTPA film surface had accumulated clusters of globules, which were smaller than those of PTTPA. The superior performances of PTBTPA suggested its potential as an efficient EC material.

Key words: Triphenylamine core, Electropolymerization, Film-forming, Electrochromism, High optical contrast

欧阳密, 付志艳, 吕晓静, 陈欢乐, 胡彬, 夏旭峰, 张诚. 偶联噻吩引入对三苯胺成膜性提高及电致变色性能增强[J]. 物理化学学报, 2013, 29(05), 996-1002. doi: 10.3866/PKU.WHXB201302282

OUYANG Mi, FU Zhi-Yan, Lü Xiao-Jing, CHEN Huan-Le, HU Bin, XIA Xu-Feng, ZHANG Cheng. Enhanced Film-Forming and Electrochromic Properties by Incorporating Bithiophene into Triphenylamine[J]. Acta Phys. -Chim. Sin. 2013, 29(05), 996-1002. doi: 10.3866/PKU.WHXB201302282

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201302282

https://www.whxb.pku.edu.cn/CN/Y2013/V29/I05/996

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偶联噻吩引入对三苯胺成膜性提高及电致变色性能增强

Enhanced Film-Forming and Electrochromic Properties by Incorporating Bithiophene into Triphenylamine

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