Synthesis of Multiarmed Poly(3-hexyl thiophene) Star Polymer with Microgel Core by GRIM and ATRP Methods

Authors
Kim, Hyun-JiLee, Yun JaeHwang, Seung SangChoi, Dong HoonYang, HoichangBaek, Kyung-Youl
Issue Date
2011-10-01
Publisher
WILEY
Citation
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.49, no.19, pp.4221 - 4226
Abstract
Regioregular poly(3-hexyl thiophene) (rr-P3HT)-based star polymers were synthesized by a crosslinking reaction of the linear rr-P3HT macroinitiator and ethylene glycol dimethacrylate (EGDMA) crosslinker through Ru-based atom transfer radical polymerization (ATRP), where the rr-P3HT macroinitiator was prepared by Grignard metathesis method (GRIM) followed by end functionalization of the ATRP initiator with chlorophenylacetate (CPA) to the rr-P3HT. Relatively high molecular weight of the star polymers were obtained (M-p = 8,988,000 g/mol), which consisted of large numbers of the rr-P3HT arm chains radiating from the EGDMA-based microgel core. The yield of the star polymers were strongly affected by the added amount of the EGDMA crosslinker. The crystalline structure of the rr-P3HT by intermolecular pi-pi stacking interaction gradually decreased as the star polymer formed, which was confirmed by differential scanning calorimeter (DSC), atomic force microscopy (AFM), and electro-optical analyses. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 4221-4226, 2011
Keywords
LIVING RADICAL POLYMERIZATION; SHAPED POLYMERS; LIVING RADICAL POLYMERIZATION; SHAPED POLYMERS; atom transfer radical polymerization (ATRP); conducting polymers; crosslinking; microgels; star polymers
ISSN
0887-624X
URI
https://pubs.kist.re.kr/handle/201004/129903
DOI
10.1002/pola.24864
Appears in Collections:
KIST Article > 2011
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