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Visible and near-infrared electrochromic thiophene-diketopyrrolopyrrole polymers

机译:可见和近红外电致色噻吩 - 二酮吡咯吡咯聚合物

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摘要

A series of low bandgap polymers containing thiophene and diketopyrrolopyrrole (DPP) units were synthesized and their electrochromic (EC) properties were investigated. It was found that the ratio (R-da) of thiophene to DPP units correlates to the EC properties, in particular optical contrast (Delta T) and coloration efficiency (CE) in the visible and near-infrared spectral regions (e.g., 1310 nm). At the wavelength of 1310 nm, the CE of polymer P2 (R-da = 3 : 1) and DT of polymer P4 (R-da = 4 : 1) reached the high values of 1383 cm(2) C-1 and 81.5%, respectively. Polymer P3 (R-da = 3.5 : 1) had a relatively short switching time of 1.24 s from the doped state to neutral state. Colors of polymer films changed reversibly between green or blue (neutral state) and grey (doped state) upon the redox cycling.
机译:合成了一系列含有噻吩和二酮吡咯啉(DPP)单元的低带隙聚合物,并研究了它们的电致变色(EC)性能。 发现噻吩与DPP单元的比率(R-DA)与可见和近红外光谱区域中的EC性能,特别是光学对比度(ΔT)和着色效率(CE)相关联(例如,1310nm )。 在1310nm的波长下,聚合物P2(R-DA = 3:1)的Ce和聚合物p4(R-DA = 4:1)的DT达到了1383cm(2)C-1和81.5的高值 %, 分别。 聚合物P3(R-DA = 3.5:1)从掺杂状态与中性状态的相对短的切换时间为1.24秒。 在氧化还原循环时,聚合物膜的颜色可逆地在绿色或蓝色(中性状态)和灰色(掺杂状态)之间变化。

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  • 来源
    《RSC Advances》 |2017年第25期|共6页
  • 作者单位

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Polymer Phys &

    Chem Changchun 130022 Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Polymer Phys &

    Chem Changchun 130022 Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Polymer Phys &

    Chem Changchun 130022 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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