All Donor Electrochromic Polymers Tunable across the Visible Spectrum via Random Copolymerization

A series of conjugated, random terpolymers based on all donor repeat units are prepared via direct (hetero)­arylation polymerization yielding cathodically colored electrochromic polymers that span the visible spectrum. The polymers are based on repeat units of a dialkylthiophene, a 3,4-propylenediox...

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Bibliographic Details
Published in:Chemistry of materials 2019-09, Vol.31 (17), p.6841-6849
Main Authors: Christiansen, Dylan T, Ohtani, Shunsuke, Chujo, Yoshiki, Tomlinson, Aimée L, Reynolds, John R
Format: Article
Language:English
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Summary:A series of conjugated, random terpolymers based on all donor repeat units are prepared via direct (hetero)­arylation polymerization yielding cathodically colored electrochromic polymers that span the visible spectrum. The polymers are based on repeat units of a dialkylthiophene, a 3,4-propylenedioxythiophene, and dimers of 3,4-ethylenedioxythiophene. Using a tight feedback loop between computational and experimental chemistry, the colors of these polymers are controllably tuned to cover the visible spectrum by controlling the monomer ratios. Examinations via ultraviolet–visible–near-infrared spectroscopy, differential pulse voltammetry, spectroelectrochemistry, and colorimetry show that, while these systems can vary greatly in their spectral properties, their oxidation potentials are all low (
ISSN:0897-4756
1520-5002
DOI:10.1021/acs.chemmater.9b01293