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Issue 47, 2018
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Thieno[3,2-b]thiophene-based conjugated copolymers for solution-processable neutral black electrochromism

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Abstract

In the quest for ideal color and performance of black electrochromism, two solution-processable neutral black electrochromic copolymers, PTTBTPh0.35 and PTTBTTh0.30, were prepared through facile direct (hetero)arylation polymerization. Both copolymers exhibit a favorable black color with broad absorption across the visible range of the spectrum and PTTBTPh0.35 shows quite high color neutrality with CIE 1976 coordinates (L* = 37.23; a* = −1.59; b* = 0.32). Moreover, both the copolymers reveal desirable electrochromic performances of fast switching within ≤1 s, high optical contrasts over 35% and considerable color efficiencies around 200 cm2 C−1, appearing to be promising candidates for electrochromic displays. Additionally, reliable electroactivity and high contrast in the NIR region make them applicable in energy storage and smart windows.

Graphical abstract: Thieno[3,2-b]thiophene-based conjugated copolymers for solution-processable neutral black electrochromism

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Publication details

The article was received on 14 Aug 2018, accepted on 30 Oct 2018 and first published on 31 Oct 2018


Article type: Paper
DOI: 10.1039/C8PY01208C
Citation: Polym. Chem., 2018,9, 5608-5616

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    Thieno[3,2-b]thiophene-based conjugated copolymers for solution-processable neutral black electrochromism

    W. Li, J. Ning, Y. Yin, X. Xing, M. Qi, T. Li, J. Cao, Y. He, I. F. Perepichka and H. Meng, Polym. Chem., 2018, 9, 5608
    DOI: 10.1039/C8PY01208C

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