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

Journal article

Conboy, G., Taylor, R.G.D., Findlay, N.J., Kanibolotsky, A.L., Inigo, A.R., Ghosh, S.S., Ebenhoch, B., Jagadamma, L.K., Thalluri, G.K.V.V. and Sajjad, T. (2017). Novel 4, 8-benzobisthiazole copolymers and their field-effect transistor and photovoltaic applications. Journal of Materials Chemistry C. 5 (45), pp. 11927-11936. https://doi.org/10.1039/C7TC03959J
AuthorsConboy, G., Taylor, R.G.D., Findlay, N.J., Kanibolotsky, A.L., Inigo, A.R., Ghosh, S.S., Ebenhoch, B., Jagadamma, L.K., Thalluri, G.K.V.V. and Sajjad, T.
Abstract

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.

Year2017
JournalJournal of Materials Chemistry C
Journal citation5 (45), pp. 11927-11936
PublisherRoyal Society of Chemistry (RSC)
ISSN2050-7534
Digital Object Identifier (DOI)https://doi.org/10.1039/C7TC03959J
Publication dates
Print13 Nov 2017
Online13 Nov 2017
Publication process dates
Accepted15 Oct 2017
Deposited12 Feb 2020
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