화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터)
권호 43권 1호
발표분야 고분자구조 및 물성
제목 Transition of Morphology Behaviors of Regioregularity Controlled P3HT-b-P2VP Block Copolymers in Solution
초록 In selective solvents, poly(3-hexylthiophene) (P3HT)-based block copolymers (BCPs) assembles into crystallized nanowire (NW) structures in contrast to micelluar (MC) structures from conventional coil-coil BCP. Herein, we demonstrate a transition of NW to MC structures of P3HT-based BCPs as changing of their regioregularity (RR). We synthesized a series of P3HT-b-P2VP copolymers, of which RR was systemically regulated from 95 to 55% and investigated their solution behavior in binary solvent mixtures. NW structure was produced from the P3HT-b-P2VP with high RR of 95%. Between 80% and 65% of RR, intermediate morphologies between NWs and MCs were observed. When RR decreased, the widths and heights of such quasi-NWs were gradually increased in reverse proportion to reduction of crystallinity analyzed by GIWAXS and DSC measurement. Under 65% of RR, crystallization of the P3HT moiety is sufficiently suppressed so that only MC structures were formed.
저자 김영권1, 김진성1, 김형준2, 박현정1, 한정훈1, 김범준1
소속 1KAIST, 2U.Mass.Amherst
키워드 P3HT; solution assembly; block copolymer; regioregularity
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