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Adv Mater. 2016 Sep;28(34):7466-71. doi: 10.1002/adma.201601502. Epub 2016 Jun 20.

Novel Air Stable Organic Radical Semiconductor of Dimers of Dithienothiophene, Single Crystals, and Field-Effect Transistors.

Author information

1
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
2
School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
3
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. zhenyg@iccas.ac.cn.
4
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. ljiang@iccas.ac.cn.
5
Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK. ljiang@iccas.ac.cn.
6
Department of Chemistry and Department of Physics, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
7
Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.
8
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. huwp@iccas.ac.cn.
9
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Sciences, Tianjin University, Tianjin, 300072, China. huwp@iccas.ac.cn.
10
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China. huwp@iccas.ac.cn.

Abstract

Singly linked and vinyl-linked dimers of dithienothiophenes exhibit different electronic behaviors. Single crystals of the singly linked dimer show a high conductivity of 0.265 S cm(-1) , five orders of magnitude higher than that of the vinyl-linked dimer. The huge increase in the hole density of singly linked dimers results from the formation of radicals, which can be reversibly tuned by facile thermal de-doping.

KEYWORDS:

field-effect transistors; organic semiconductors; radicals; single crystals

PMID:
27322939
DOI:
10.1002/adma.201601502

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