119th General Meeting of the KCS

Type Symposium
Area Recent Trends in Polymer Synthesis: Controlled Molecular Weights, Morphology, and Beyond
Room No. 405호
Time THU 13:55-:
Code POLY1-2
Subject Synthesis and Characterization of Well-defined P3HT based Self-assembled Nanomaterials
Authors 백경열
한국과학기술연구원(KIST) 물질구조제어연구센터, Korea
Abstract Two series of well-defined poly(3-hexylthiophene) (P3HT) based self-assembled nanomaterials were prepared by the interaction of functionalized P3HTs and nanomaterials. As the first series, P3HT star polymers with gold nanoparticle (NP) core were synthesized by ligand exchange reaction between linear end-functionalized P3HT (P3HT-SH) and gold NP in solution. Obtained P3HT star polymers with gold NP core showed extremely high molecular weights (Mw ~ 3,000,000) and were well-dispersed both in solution and in solid, which was interestingly not crystallized because of unique 3-dimenstional structure. Second series of P3HT based self-assembled nanomaterials was prepared by the reaction of P3HT based block copolymer and carbon nanotube (CNT) through pi-pi interactions, where the other block copolymer, poly(neopentyl sulfonated styrene) (PNSS) was grafted to P3HT wrapped CNT. This grafted PNSS was then directly converted sulfonic polystyrene (SPS) by in-situ heat processing in solid state, which effectively doped the surface of P3HT on CNT to improve the conductivity.
E-mail baek@kist.re.kr