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首页> 外文期刊>Optical Materials >Novel D-A-D conjugated polymers based on tetraphenylethylene monomer for electrochromism
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Novel D-A-D conjugated polymers based on tetraphenylethylene monomer for electrochromism

机译：基于四苯基乙烯单体的新型D-A-D共轭聚合物用于电致变色

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摘要

A monomer (E)-4',4'"-(1,2-diphenylethene-1,2-diyl)bis([1,1'-biphenyl]-4-carbaldehyde) (DDBC) with AIE properties and two novel DDBC-basing polyazomethines (coded as P1 and P2) were prepared. They were gained in short time, low cost and mild reaction conditions by a straightforward synthetic path. Fluorescent testing shows that DDBC owns an intense aggregation-induced emission (ATE) characteristics. But unfortunately, the polymers based on DDBC do not have AIE effect. It may be attributed that the molecules in the excited state consume light energy in the form of electron transfer, reducing the proportion of energy outputted from light, thus causing the disappearance of macroscopic fluorescence. Another guess is that the tetraphenylethylene (TPE) unit takes part of the conjugated backbone of the polymer. However, P1 have high coloration efficiency (346.94 cm(2) C-1) and P2 have short response time (the color switching time is 3.43 s and the bleaching time is 1.41 s at 470 nm). Moreover, P1 has electrochromic properties in the near-infrared field. Thus, these features demonstrate that these two novel polymers have great potential as electrochromic materials in optoelectronics applications.
机译：具有AIE性质的单体（E）-4'，4'“-（1,2，-二苯基乙烯-1,2-二基）双（[1,1'-联苯] -4-甲醛）（DDBC）和两种新型制备了以DDBC为基的聚甲亚胺（代号为P1和P2），它们是在短时间内，低成本和温和的反应条件下通过一条简单的合成途径获得的，荧光测试表明DDBC具有强烈的聚集诱导发射（ATE）特性。但不幸的是，基于DDBC的聚合物没有AIE效应，可能是由于处于激发态的分子以电子转移的形式消耗光能，从而降低了从光输出的能量比例，从而导致宏观上的消失。另一个猜测是四苯基乙烯（TPE）单元是聚合物共轭主链的一部分，但是P1的着色效率高（346.94 cm（2）C-1），P2的响应时间短（颜色切换时间）在470 nm波长下为3.43 s，漂白时间为1.41 s。 P1在近红外场中具有电致变色特性。因此，这些特征表明，这两种新型聚合物在光电应用中具有作为电致变色材料的巨大潜力。

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  • 来源
    《Optical Materials》 |2020年第2期|109658.1-109658.9|共9页
  • 作者

    Liu Fuhan; Cong Zhongfei; Yu Guang; Niu Haijun; Hou Yanjun; Wang Cheng; Wang Shuhong;

  • 作者单位

    Heilongjiang Univ Sch Chem Engn & Mat Harbin 150080 Peoples R China;

    Heilongjiang Univ Minist Educ Peoples Republ China Key Lab Funct Inorgan Mat Chem Harbin 150080 Peoples R China;

    Heilongjiang Univ Sch Chem Engn & Mat Harbin 150080 Peoples R China|Heilongjiang Univ Coll Heilongjiang Prov Key Lab Chem Engn Proc & Technol High Efficiency Harbin 150080 Peoples R China;

    Heilongjiang Univ Coll Heilongjiang Prov Key Lab Chem Engn Proc & Technol High Efficiency Harbin 150080 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Electrochromic properties; Polyazomethine; Aggregation-induced emission; Spectroelectrochemistry;

    机译：电致变色性能;聚偶氮甲碱;聚集引起的排放;光谱电化学;

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