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Tandem RAFT Polymerization and Click Chemistry: An Efficient Approach to Surface Modification
Author(s) -
Ranjan Rajesh,
Brittain William J.
Publication year - 2007
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.200700428
Subject(s) - raft , click chemistry , reversible addition−fragmentation chain transfer polymerization , polymerization , grafting , polymer chemistry , thermogravimetric analysis , chain transfer , chemistry , chemical engineering , tandem , surface modification , polystyrene , styrene , azide , materials science , radical polymerization , organic chemistry , polymer , copolymer , engineering , composite material
Abstract PS grafted silica nanoparticles have been prepared by a tandem process that simultaneously employs RAFT polymerization and click chemistry. In a single pot procedure, azide‐modified silica, an alkyne functionalized RAFT agent and styrene are combined to produce the desired product. As deduced by thermal gravimetric and elemental analysis, the grafting density of PS on the silica in the tandem process is intermediate between analogous “grafting to” and “grafting from” techniques for preparing PS brushes on silica. Relative rates of RAFT polymerization and click reaction can be altered to control grafting density.