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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능
대회명 대한화학회 제121회 학술발표회 및 총회
등록일 2018년 03월 12일 15시 30분 53초
접수번호 6634
발표코드 KCS.O-10 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간 목 11시 : 27분
발표형식 구두발표
발표분야 KCS - Oral Presentation for 2018 DOW Chemical Korea Award
저자 및 공동저자 SUNG YUN SON, Yebyeol Kim, Junwoo Lee, Gang-Young Lee, Won-Tae Park1, Yong-Young Noh1, Chan Eon Park*, Taiho Park*
Department of Chemical Engineering, Pohang University of Science and Technology, Korea
1Department of Energy and Materials Engineering, Dongguk University, Korea
제목 High-Field-Effect Mobility of Low-Crystallinity Conjugated Polymers with Localized Aggregates
내용 Charge carriers typically move faster in crystalline regions than in amorphous regions in conjugated polymers because polymer chains adopt a regular arrangement resulting in a high degree of π−π stacking in crystalline regions. In contrast, the random polymer chain orientation in amorphous regions hinders connectivity between conjugated backbones; thus, it hinders charge carrier delocalization. Various studies have attempted to enhance charge carrier transport by increasing crystallinity. However, these approaches are inevitably limited by the semicrystalline nature of conjugated polymers. Moreover, high-crystallinity conjugated polymers have proven inadequate for soft electronics applications because of their poor mechanical resilience. Increasing the polymer chain connectivity by forming localized aggregates via π-orbital overlap among several conjugated backbones in amorphous regions provides a more effective approach to efficient charge carrier transport. A simple strategy relying on the density of random copolymer alkyl side chains was developed to generate these localized aggregates. In this strategy, steric hindrance caused by these side chains was modulated to change their density. Interestingly, a random polymer exhibiting low alkyl side chain density and crystallinity displayed greatly enhanced field-effect mobility (1.37 cm2/(v·s)) compared with highly crystalline poly(3-hexylthiophene).
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