Solution-Processed and Air-Stable n-Type Organic Thin-Film Transistors Based on Thiophene-Fused Dicyanoquinonediimine (DCNQI) Deriatives

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• 作者：Shiyan Chen ; Yan Zhao ; Altan Bolag ; Jun-ichi Nishida ; Yunqi Liu ; Yoshiro Yamashita
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：August 22, 2012
• 年：2012
• 卷：4
• 期：8
• 页码：3994-4000
• 全文大小：382K
• 年卷期：v.4,no.8(August 22, 2012)
• ISSN：1944-8252

文摘

蟺-Conjugated systems 2a and 2b containing thiophene-fused DCNQI with long alkyl and trifluoromethylphenyl groups were synthesized as potential active materials for solution-processed and air-stable n-type organic thin-film transistors (OTFTs). The electrochemical measurements revealed that the lowest unoccupied molecular orbital (LUMO) of the compounds have an energy level less than 鈭?.0 eV, indicating air stable n-type materials. The long alkyl groups endowed the compounds good solubility and solution-processability. X-ray diffraction measurements revealed the difference of the molecular arrangement depending on the alkyl groups, which were also observed in the UV鈥搗is absorptions of the films. A relatively good mobility up to 0.003 cm² V^鈥? s^鈥? for 2a by spin-coating was obtained with good air stability.

Keywords:

thiophene-fused DCNQI; n-type; solution-processed; air-stable; organic thin-film transistors