Alkyl Chain Length Dependence of the Field-Effect Mobility in Novel Anthracene Derivatives

We report six asymmetric alkylated anthracene-based molecules with different alkyl side chain lengths for use in organic field-effect transistors (OFETs). Alkyl side chains can potentially improve the solubility and processability of anthracene derivatives. The crystallinity and charge mobility of t...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2015-01, Vol.7 (1), p.351-358
Main Authors: Back, Jang Yeol, An, Tae Kyu, Cheon, Ye Rim, Cha, Hyojung, Jang, Jaeyoung, Kim, Yebyeol, Baek, Yonghwa, Chung, Dae Sung, Kwon, Soon-Ki, Park, Chan Eon, Kim, Yun-Hi
Format: Article
Language:English
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Summary:We report six asymmetric alkylated anthracene-based molecules with different alkyl side chain lengths for use in organic field-effect transistors (OFETs). Alkyl side chains can potentially improve the solubility and processability of anthracene derivatives. The crystallinity and charge mobility of the anthracene derivatives may be improved by optimizing the side chain length. The highest field-effect mobility of the devices prepared here was 0.55 cm2/(V s), for 2-(p-pentylphenylethynyl)­anthracene (PPEA). The moderate side chain length appeared to be optimal for promoting self-organization among asymmetric anthracene derivatives in OFETs, and was certainly better than the short or long alkyl side chain lengths, as confirmed by X-ray diffraction measurements.
ISSN:1944-8244
1944-8252
DOI:10.1021/am5063103