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新型多色共聚物的电化学合成及性质表征
贾少磊¹,郭宁^2,3,侯影飞²,陈爽²
(1.山东石大科技集团有限公司,山东东营 257061; 2.中国石油大学重质油国家重点实验室,山东青岛 266580;3.中国海洋大学化学化工学院,山东青岛 266100)

摘要:

通过耦合反应合成1-(3-甲基噻吩-2-基)芘(MTP)的单体,应用电化学方法合成一种基于1-(3-甲基噻吩-2-基)芘(MTP)和3,4-乙烯二氧噻吩(EDOT)的新型共轭共聚物,并对其进行表征。采用循环伏安法(CV)、紫外-可见光谱(UV-vis)和扫描电镜(SEM)表征合成的共聚物P(MTP-co-EDOT)。结果表明:与MTP和EDOT均聚物相比,P(MTP-co-EDOT)薄膜电致变色特性明显,在不同的电势下,可以显示出紫色、棕色、草绿色和灰蓝色4种不同的颜色;共聚物薄膜光学对比度高、响应时间短。

关键词: 电化学聚合共轭共聚物 1-(3-甲基噻吩-2-基)芘 3,4-乙烯二氧噻吩

DOI：10.3969/j.issn.1673-5005.2014.05.029

分类号::O 631.3

基金项目::山东省自然科学基金项目(ZR2011EL031,ZR2012BL15);中央高校基本科研业务费专项(14CX02049A)

Electrochemical synthesis and characterization of novel multielectrochromic copolymer

JIA Shaolei¹, GUO Ning^2,3, HOU Yingfei², CHEN Shuang²

(1.Shtar Science & Technology Group, Dongying 257061, China;2.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China;3.School of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China)

Abstract:

methylthiophen-2-yl) pyrene (MTP) monomer was successfully synthesized via coupling reaction firstly. Then, a new conjugated copolymer based on 1-(3-methylthiophen-2-yl) pyrene (MTP) and 3,4-ethylenedioxythiophene (EDOT) was electrochemically synthesized and characterized subsequently. Characterizations of the copolymer P(MTP-co-EDOT) were carried out by cyclic voltammetry (CV), UV-vis spectroscopy and scanning electron microscopy (SEM). It is found that P(MTP-co-EDOT) film has distinct electrochromic properties compared to the MTP and the EDOT homopolymers, and it exhibits four different colors (purple, brown, grass green and dusty blue) under various potentials. Moreover, the copolymer film shows high optical contrasts and satisfactory response times.

Key words: electrochemical polymerization conjugated copolymer 1-(3-methylthiophen-2-yl) pyrene 3,4-ethylenedioxythiophene