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Issue 12, 2021
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Tyrian purple: an ancient natural dye for cross-conjugated n-type charge transport

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Abstract

Herein, we present two novel organic semiconducting polymers synthesised from an ancient dye. By employing cross-conjugation within the polymer backbone as a synthetic strategy, we are able to engineer optical gaps such that the novel materials absorb over the entire visible spectrum. The cross-conjugated polymers exhibited relatively high n-type charge transport performance in organic field-effect transistors, a rare characteristic for this type of polymer. Quantum chemical calculations provide insight into this behaviour, suggesting that, whilst conjugation along the HOMO is indeed inhibited via molecular design, these materials possess highly delocalized LUMOs, facilitating high n-type charge transport.

Graphical abstract: Tyrian purple: an ancient natural dye for cross-conjugated n-type charge transport

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Supplementary files

Article information


Submitted
25 Nov 2020
Accepted
18 Dec 2020
First published
03 Mar 2021

This article is Open Access

J. Mater. Chem. C, 2021,9, 4200-4205
Article type
Paper

Tyrian purple: an ancient natural dye for cross-conjugated n-type charge transport

K. J. Fallon, N. Wijeyasinghe, A. Leventis, J. M. Marin-Beloqui, D. T. W. Toolan, M. Al-Hashimi, T. M. Clarke, T. D. Anthopoulos and H. Bronstein, J. Mater. Chem. C, 2021, 9, 4200
DOI: 10.1039/D0TC05553K

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