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Issue 7, 2014
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Redox-stable and visible/near-infrared electrochromic aramids with main-chain triphenylamine and pendent 3,6-di-tert-butylcarbazole units

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Abstract

A series of visible and near-infrared (NIR) electrochromic aramids with main-chain triphenylamine and pendent 3,6-bis(tert-butyl)carbazole units were prepared from the phosphorylation polyamidation reaction of 4,4′-diamino-4′′-(3,6-di-tert-butylcarbazol-9-yl)triphenylamine with various aromatic dicarboxylic acids. These aramids were readily soluble in many polar solvents and could be solution cast into flexible and strong films. They showed useful levels of thermal stability associated with relatively high glass-transition temperatures (Tg) (295–321 °C) and high decomposition temperatures (no significant degradation occurred before 450 °C in nitrogen or air). In addition, the polymer films showed reversible electrochemical oxidation with enhanced NIR contrast, fast switching time, and anodic green/blue electrochromic behaviors.

Graphical abstract: Redox-stable and visible/near-infrared electrochromic aramids with main-chain triphenylamine and pendent 3,6-di-tert-butylcarbazole units

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Article information


Submitted
06 Sep 2013
Accepted
16 Dec 2013
First published
16 Dec 2013

Polym. Chem., 2014,5, 2473-2483
Article type
Paper

Redox-stable and visible/near-infrared electrochromic aramids with main-chain triphenylamine and pendent 3,6-di-tert-butylcarbazole units

S. Hsiao, H. Wang and S. Liao, Polym. Chem., 2014, 5, 2473
DOI: 10.1039/C3PY01239E

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