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ID 59929
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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 ORCID Kaken ID publons researchmap
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.
Keywords
organic field-effect transistor (OFET)
thienoacene
p-type semiconductor
Negishi coupling reaction
cycloaromatization
fastener effect
Published Date
2020-04-01
Publication Title
International Journal of Molecular Sciences
Volume
volume21
Issue
issue7
Publisher
MDPI
Start Page
2447
ISSN
1422-0067
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Copyright Holders
© 2020 by the authors.
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publisher
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.3390/ijms21072447
License
http://creativecommons.org/licenses/by/4.0/
Funder Name
Ministry of Education, Culture, Sports, Science and Technology
助成番号
15H00751