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Improved charge transport in fused-ring bridged hemi-isoindigo-based small molecules by incorporating thiophene unit for solution-processed organic field-effect transistors

Abstract

Two acceptor-donor-acceptor small molecules based on fused ring indacenodithieno[3,2-b]thiophene (IDTT) as donor, and hemi-isoindigo units, methyleneoxindole (IDTT-MI) and thienylmethyleneoxindole (IDTT-T-MI) as acceptors were synthesized and characterized for solution-processed organic field-effect transistors. The incorporation of thiophene bridge which extended conjugation of backbone maintained highly co-planar structures, and also endowed the small molecule with ordered crystalline structures and interconnected morphology. Consequently, IDTT-T-MI-based organic field-effect transistors exhibited a highest hole mobility of 0.80 cm2V–1s–1, which was the highest mobility for solution-processed hemi-isoindigo-based organic semiconductor materials.

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Publication details

The article was received on 30 Sep 2019, accepted on 22 Nov 2019 and first published on 26 Nov 2019


Article type: Paper
DOI: 10.1039/C9TC05374C
J. Mater. Chem. C, 2019, Accepted Manuscript

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    Improved charge transport in fused-ring bridged hemi-isoindigo-based small molecules by incorporating thiophene unit for solution-processed organic field-effect transistors

    G. Zhang, R. Chen, Y. Sun, B. Kang, M. Sun, H. Lu, L. Qiu, K. Cho and Y. Ding, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C9TC05374C

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