Citation: He Ping, Zhang Hantang, Xu Chunhui, Zhen Yonggang, Dong Huanli, Hu Wenping. Hexyl substitution of pentathienoacene toward a significant improvement in charge transport[J]. Chinese Chemical Letters, ;2019, 30(4): 903-905. doi: 10.1016/j.cclet.2019.02.012 shu

Hexyl substitution of pentathienoacene toward a significant improvement in charge transport

He Ping ^a,b,**, ,
Zhang Hantang ^c ,
Xu Chunhui ^b ,
Zhen Yonggang ^b,*, ,
Dong Huanli ^b ,
Hu Wenping ^d,*,

a.
Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, China
b.
Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
c.
College of Chemistry and Material Science, Shandong Agriculture University, Tai'an 271018, China
d.
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China

^**

hp10004@163.com

zhenyg@iccas.ac.cn

huwp@tju.edu.cn

Received Date: 4 January 2019
Revised Date: 28 January 2019
Accepted Date: 11 February 2019
Available Online: 20 April 2019

Figures(4)

A novel semiconductor, dihexyl-substituted pentathienoacene (C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm² V^-1 s^-1, which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.
- Organic field-effect transistors,
- Organic semiconductors,
- Thienoacene,
- Charge transport,
- Stability
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