Issue 17, 2016

Solution-processable thiadiazoloquinoxaline-based donor–acceptor small molecules for thin-film transistors

Abstract

Although several [1,2,5]thiadiazolo[3,4-g]quinoxaline (TQ)–thiophene-based hybrid polymers have been demonstrated for application in organic field-effect transistors (OFETs), the research on the charge carrier mobility of conjugated donor (D)–acceptor (A) small molecules is rare. To enrich the TQ-containing small molecule family, in this paper, we designed and synthesized three novel TQ derivatives 1, 2, and 3 with thiophene units attached onto the TQ cores. The optoelectronic and OFET properties of as-prepared compounds 1–3 are investigated. Our results indicate that compounds 1–3 show typical p-type characteristics with mobility as high as 0.012, 0.05 and 0.0055 cm2 V−1 s−1 and on/off current ratios of 3 × 105, 1 × 106 and 1 × 104 under the optimized conditions, respectively. Due to the steric effect of the substituted bulky group, compound 3 adopts a looser packing mode with a larger π–π distance, which subsequently reduces the transport performance. Our results suggest that the D–A π-conjugated small molecules based on TQ could be good candidates for application in organic electronic devices.

Graphical abstract: Solution-processable thiadiazoloquinoxaline-based donor–acceptor small molecules for thin-film transistors

Supplementary files

Article information

Article type
Paper
Submitted
08 Okt. 2015
Accepted
04 Janv. 2016
First published
06 Janv. 2016

J. Mater. Chem. C, 2016,4, 3809-3814

Author version available

Solution-processable thiadiazoloquinoxaline-based donor–acceptor small molecules for thin-film transistors

P. Gu, J. Zhang, G. Long, Z. Wang and Q. Zhang, J. Mater. Chem. C, 2016, 4, 3809 DOI: 10.1039/C5TC03222A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements