Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 29, Issue 16, Pages 1385-1391Publisher
WILEY-BLACKWELL
DOI: 10.1002/marc.200800223
Keywords
dendrimers; heteroarm; ring-opening polymerization; reversible addition fragmentation transfer (RAFT); star copolymers
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Funding
- National Natural Science Foundation of China [50503012, 50633010, 20774057]
- Special Funds for Major State Basic Research Projects [2005 CB623803]
- National Basic Research Program [2007CB808000]
- New Century Excellent Talents in University
- Rising-Star Foundation [06OA14028]
- Basic Research Foundation [07DJ14004]
- Shanghai Leading Academic Discipline Project [B202]
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A new dendritic heteroarm star copolymer that contains multi-alternating arms of poly(ethylene oxide-tetrahydrofuran) (P(EO-THF)) and poly(methyl methacrylate) (PMMA) on a dendritic polyester Core has been synthesized by a 'core-first' approach by combination of sequential cationic ring-opening polymerization (CROP) and reversible addition-fragmentation transfer (RAFT) polymerization initiated by a dendritic macroinitiator (3) capped with multi-alternating terminal carboxylic acid groups (used directly to initiate the ROP of THF in the presence of EO as a polymerization promoter to attain P(EO-THF) arms) and dithiobenzoate groups (used to initiate RAFT polymerization of MMA to attain PMMA arms). The structures of the products were confirmed by NMR spectroscopy, GPC-MALLS, and DSC measurements.
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