Novel 4,8-benzobisthiazole copolymers and their field-effect transistor and photovoltaic applications

Conboy, G. et al. (2017) Novel 4,8-benzobisthiazole copolymers and their field-effect transistor and photovoltaic applications. Journal of Materials Chemistry C, 5(45), pp. 11927-11936. (doi: 10.1039/C7TC03959J)

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A series of copolymers containing the benzo[1,2-d:4,5-d′]bis(thiazole) (BBT) unit has been designed and synthesised with bisthienyl-diketopyrrolopyrrole (DPP), dithienopyrrole (DTP), benzothiadiazole (BT), benzodithiophene (BDT) or 4,4′-dialkoxybithiazole (BTz) comonomers. The resulting polymers possess a conjugation pathway that is orthogonal to the more usual substitution pathway through the 2,6-positions of the BBT unit, facilitating intramolecular non-covalent interactions between strategically placed heteroatoms of neighbouring monomer units. Such interactions enable a control over the degree of planarity through altering their number and strength, in turn allowing for tuning of the band gap. The resulting 4,8-BBT materials gave enhanced mobility in p-type organic field-effect transistors of up to 2.16 × 10−2 cm2 V−1 s−1 for pDPP2ThBBT and good solar cell performance of up to 4.45% power conversion efficiency for pBT2ThBBT.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Skabara, Professor Peter and Findlay, Dr Neil
Authors: Conboy, G., Taylor, R. G.D., Findlay, N. J., Kanibolotsky, A. L., Inigo, A. R., Ghosh, S. S., Ebenhoch, B., Krishnan Jagadamma, L., Thalluri, G. K. V.V., Sajjad, M. T., Samuel, I. D. W., and Skabara, P. J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Materials Chemistry C
Publisher:Royal Society of Chemistry
ISSN (Online):2050-7534
Copyright Holders:Copyright © 2017 The Royal Society of Chemistry
First Published:First published in Journal of Materials Chemistry C 5:11927-11936
Publisher Policy:Reproduced under a Creative Commons License

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