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Isomeric organic semiconductors containing fused-thiophene cores: molecular packing and charge transport

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Abstract

Isomeric TF1 and TF2 with highly fused thiophene cores were designed and synthesized here, in which a highly planar molecular structure was obtained for TF1 with the face-to-face sulfur atoms in the lateral region and a twisted molecular backbone was observed for TF2 with the back-to-back sulfur atoms. It is worth noting that different intermolecular interactions dominated in TF1 and TF2 caused by their isomeric thiophene cores, in which strong π–π stacking was achieved for TF1, whereas sulphur-involved nonbonding intermolecular interactions dominated in TF2, leading to the different fluorescence behaviors and also the altered liquid crystalline phases. Finally, typical P-type charge transport behaviors were achieved in both TF1- and TF2-based solution-processed OFETs. Also owing to the much ordered molecular packing in TF1, a higher charge carrier mobility of 3.7 × 10−3 cm2 V−1 s−1 was achieved for TF1-based OFETs compared to TF2-based OFETs.

Graphical abstract: Isomeric organic semiconductors containing fused-thiophene cores: molecular packing and charge transport

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Publication details

The article was received on 22 Dec 2017, accepted on 23 Mar 2018 and first published on 23 Mar 2018


Article type: Paper
DOI: 10.1039/C7CP08567B
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    Isomeric organic semiconductors containing fused-thiophene cores: molecular packing and charge transport

    D. Dang, P. Zhou, Y. Wu, Y. Xu, Y. Zhi and W. Zhu, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C7CP08567B

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