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Synthesis of a Novel Polyfunctional Anionic Macroinitiator from a Polyfunctional 1,1‐Diphenylethylene Agent
Author(s) -
Cheng Chong,
Yang NanLoh
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500349
Subject(s) - romp , anionic addition polymerization , monomer , norbornene , living anionic polymerization , polymerization , polymer chemistry , copolymer , butyllithium , ring opening polymerization , chemistry , metathesis , macromonomer , polymer , materials science , organic chemistry
Summary: A polyfunctional 1,1‐diphenylethylene (DPE) agent was prepared by ring‐opening metathesis polymerization of a DPE‐functionalized norbornene monomer. Its reaction with sec ‐butyllithium gave a novel polyfunctional anionic macroinitiator with one 1,1‐diarylalkyllithium initiation functionality per repeating unit. The significant applicability of this polyfunctional anionic macroinitiator was demonstrated by its excellent initiation efficiencies in anionic polymerization and a preparation of a graft copolymer with well‐controlled long and dense diblock grafts.Preparation of a polyfunctional anionic macroinitiator based on ROMP and DPE chemistry.