ID | 59929 |
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Author |
Ishida, Takumi
Graduate School of Natural Science and Technology, Okayama University
Sawanaka, Yuta
Graduate School of Natural Science and Technology, Okayama University
Toyama, Ryota
Graduate School of Natural Science and Technology, Okayama University
Ji, Zhenfei
Graduate School of Natural Science and Technology, Okayama University
Mori, Hiroki
Research Institute for Interdisciplinary Science, Okayama University
Nishihara, Yasushi
Research Institute for Interdisciplinary Science, Okayama University
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Abstract | To investigate organic field-effect transistor (OFET) properties, a new thienoacene-type molecule, 4,14-dihexyldinaphtho[2,3-d:2',3'-d']anthra[1,2-b:5,6-b']dithiophene (C6-DNADT), consisting of pi-conjugated nine aromatic rings and two hexyl chains along the longitudinal molecular axis has been successfully synthesized by sequential reactions, including Negishi coupling, epoxidation, and cycloaromatization. The fabricated OFET using thin films of C6-DNADT exhibited p-channel FET properties with field-effect mobilities (mu) of up to 2.6 x 10(-2) cm(2) V-1 s(-1), which is ca. three times lower than that of the parent DNADT molecule (8.5 x 10(-2) cm(2) V-1 s(-1)). Although this result implies that the installation of relatively short alkyl chains into the DNADT core is not suitable for transistor application, the origins for the FET performance obtained in this work is fully discussed, based on theoretical calculations and solid-state structure of C6-DNADT by grazing incidence wide-angle X-ray scattering (GIWAXS) and atomic force microscopy (AFM) analyses. The results obtained in this study disclose the effect of alkyl chains introduced onto the molecule on transistor characteristics.
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Keywords | organic field-effect transistor (OFET)
thienoacene
p-type semiconductor
Negishi coupling reaction
cycloaromatization
fastener effect
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Published Date | 2020-04-01
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Publication Title |
International Journal of Molecular Sciences
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Volume | volume21
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Issue | issue7
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Publisher | MDPI
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Start Page | 2447
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ISSN | 1422-0067
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2020 by the authors.
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File Version | publisher
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DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.3390/ijms21072447
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License | http://creativecommons.org/licenses/by/4.0/
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Funder Name |
Ministry of Education, Culture, Sports, Science and Technology
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助成番号 | 15H00751
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