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Dithienosilole-co-5-fluoro-2,1,3-benzothiadiazole-containing regioisomeric polymers for organic field-effect transistors
- Title
- Dithienosilole-co-5-fluoro-2,1,3-benzothiadiazole-containing regioisomeric polymers for organic field-effect transistors
- Authors
- Kang, So-Huei; Lee, Junghoon; Yoo, Dahyeon; Lee, Byoung Hoon; Yang, Changduk
- Ewha Authors
- 이병훈
- SCOPUS Author ID
- 이병훈
- Issue Date
- 2019
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY C
- ISSN
- 2050-7526
2050-7534
- Citation
- JOURNAL OF MATERIALS CHEMISTRY C vol. 7, no. 28, pp. 8522 - 8526
- Publisher
- ROYAL SOC CHEMISTRY
- Indexed
- SCIE
- Document Type
- Article
- Abstract
- Three regioisomeric polymers (P1, P2, and P3) comprising dithienosilole and asymmetric 5-fluoro-2,1,3-benzothiadiazole moieties are synthesized and characterized. Although all the polymers exhibit similar energy levels, they show different molecular orientation, crystallinity, and charge-carrier transporting characteristics. A superior hole mobility (0.021 cm(2) V-1 s(-1)) is demonstrated for an organic field-effect transistor (OFET) based on P3 with the geometrical same direction of the F atoms, which is much higher than the regiorandom (P1) and regioregular (P2) isomers. Our study reveals that the specific regio-orientation of the asymmetric units rather than the regioregularity in the backbone plays a crucial role in determining the polymer nature, bulk morphology, and OFET performance.
- DOI
- 10.1039/c9tc02414j
- Appears in Collections:
- 공과대학 > 화공신소재공학과 > Journal papers
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