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Dibromomaleimide Derivative as an Efficient Polymer Coupling Agent for Building Topological Polymers
Author(s) -
Cui Yi,
Yan Yechao,
Chen Yongming,
Wang Zhaohui
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200614
Subject(s) - polymer chemistry , polystyrene , substituent , polymer , maleimide , derivative (finance) , cycloaddition , chemistry , azide , alkyne , ethylene oxide , materials science , catalysis , organic chemistry , copolymer , financial economics , economics
The dibromomaleimide derivative, N ‐(4‐bromobutyl)‐dibromomaleimide (dBMIB), is found to be a highly efficient coupling agent to dimerize thiol‐terminated hydrophilic polymers by substituent reaction. When mono‐thiol poly(ethylene oxide) (PEO 45 ‐SH) is mixed with dBMIB in an equivalent molar feed in water, a dimer of PEO 45 with a maleimide unit located at the chain center, (PEO 45 ) 2 MIB, is obtained quantitatively. The dBMIB is also used to dimerize thiol‐ terminated poly( N ‐(2‐acryloyloxyethyl) pyrrolidone) and poly( N , N ‐dimethyl acrylamide). Moreover, the butylene bromide of (PEO 45 ) 2 MIB is transferred into a butylene azide, which is allowed to react with alkynyl‐terminated polystyrene to give a A 2 B miktoarm star polymer via a copper‐catalyzed azide–alkyne cycloaddition coupling reaction.