期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 30, 期 21, 页码 1792-1798出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200900363
关键词
atom transfer radical polymerization (ATRP); click chemistry; diblock copolymers; hetero Diels-Alder cycloaddition; reversible addition fragmentation chain transfer (RAFT)
资金
- Karlsruhe Institute of Technology (KIT)
The use of the reversible addition fragmentation chain transfer - hetero Diels-Alder (RAFT-HDA) click reaction for the modular construction of block copolymers is extended to the generation of high molecular weight materials. Cyclopentadienyl end-functionalized polystyrene (PS-Cp) prepared via both atom transfer radical polymerization (ATRP) and the RAFT process are conjugated to poly(isobornyl acrylate) (PiBoA) (also prepared via RAFT polymerization) to achieve well-defined block copolymers with molecular weights ranging from 34 000 to over 100 000 g . mol(-1) and with small polydispersities (PDI < 1.2). The conjugation reactions proceeded in a very rapid fashion (less than 10 min in the majority of cases) under ambient conditions of temperature and atmosphere. The present study demonstrates - for the first time-that RAFT-HDA click chemistry can provide access to high molecular weight block copolymers in a simple and straight-forward fashion.
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