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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Simple preparation of 1D and branched nanostructures via in situ nanoparticlization of fully conjugated polythiophene diblock copolymers

2015년 9월 8일 12시 40분 05초
POLY.O-7 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
목 10시 : 30분
고분자화학 - Oral Presentation for Young Polymer Scientists
저자 및
이인환, 최태림*
서울대학교 화학부, Korea
Synthesis and selfassembly of fully conjugated block copolymers based on polythiophene have been attracted great attention, because these polymers might yield well-defined and semiconducting nanoobjects which could become stable and high performance materials. Conventional self-assembly processes of presynthesized block copolymers generally required postsynthetic treatments such as selective solvent addition, aging, and pH change, because the synthesis of block copolymer itself did not provide sufficient driving force to assemble the polymers into the nanostructures. In addition, the generated nanostructures from conventional selfassembly processes were generally fragile toward the external stimuli such as temperature change, mechanical force, and oxidation in air, thus the further post-modifications such as chemical crosslinking were also needed to make the nanostructures stable under external stimuli. To make the self-assembly process step-economic, recently, we have reported a simple one-pot self-assembly process for the formation of kinetically trapped and highly stable nanostructures, which was termed as in situ nanoparticlization of conjugated polymers (INCP). By applying this straightforward INCP strategy, unique branched nanostructures and nanocaterpillars were directly formed during the synthesis of poly(3(2-ethylhexyl)thiophene)-block-polythiophene (P3EHT-b-PT) and poly(2,5-dihexyloxy-1,4-phenylene) -block-polythiophene (PPP-b-PT),respectively. Nanostructures from P3EHTbPT were evolved from nanosphere to nanocaterpillar to nanostar, and eventually to nanonetwork structures as increasing in length of PT. In case of PPP-b-PT, nanostructures were only evolved from nanospheres to nanocaterpillars due to the larger hydrodynamic volumn of PPP than that of P3EHT.