Dithienosilole-co-5-fluoro-2,1,3-benzothiadiazole-containing regioisomeric polymers for organic field-effect transistors
- 주제(기타) Materials Science, Multidisciplinary
- 주제(기타) Physics, Applied
- 설명문(일반) [Kang, So-Huei; Yang, Changduk] UNIST, Low Dimens Carbon Mat Ctr, Sch Energy & Chem Engn, Dept Energy Engn,Perovtron Res Ctr, 50 UNIST Gil, Ulsan 44919, South Korea; [Lee, Junghoon] Dongseo Univ, Div Chem Engn, 47 Jurye Ro, Busan 47011, South Korea; [Yoo, Dahyeon; Lee, Byoung Hoon] Ewha Womans Univ, Div Chem Engn & Mat Sci, Seoul 03760, South Korea
- 관리정보기술 faculty
- 등재 SCIE
- 발행기관 ROYAL SOC CHEMISTRY
- 발행년도 2019
- URI http://www.dcollection.net/handler/ewha/000000172016
- 본문언어 영어
- Published As https://dx.doi.org/10.1039/c9tc02414j
초록/요약
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.
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