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Architecture of colloidal crystals constructed by silica hybrid nanoparticles
Author(s) -
Ishizu Koji,
Tokuno Yoko,
Lee Dong Hoon,
Uchida Satoshi,
Ozawa Masaaki
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31473
Subject(s) - copolymer , polymer chemistry , materials science , polystyrene , styrene , atom transfer radical polymerization , methyl methacrylate , radical polymerization , photopolymer , monomer , methacrylate , colloidal crystal , chemical engineering , colloid , chemistry , polymer , organic chemistry , composite material , engineering
Silica (SiO 2 )‐crosslinked polystyrene (PS) particles possessing photofunctional N,N‐ diethyldithiocarbamate (DC) groups on their surface were prepared by the free‐radical emulsion copolymerization of a mixture of SiO 2 (diameter D n = 192 nm), styrene, divinyl benzene, 4‐vinylbenzyl N,N‐ diethyldithiocarbamate (VBDC), and 2‐hydroxyethyl methacrylate with a radical initiator under UV irradiation. In this copolymerization, the inimer VBDC had the formation of a hyperbranched structure by a living radical mechanism. These particles had DC groups on their surface. Subsequently, poly(methyl methacrylate) brushes encapsulated SiO 2 particles were synthesized by the grafting from a photoinduced atom transfer radical polymerization (ATRP) approach of methyl methacrylate initiated by SiO 2 ‐crosslinked PS particles as a macroinitiator. We constructed the colloidal crystals using these photofunctional particles. Moreover, the SiO 2 particle array of colloidal crystals was locked by radical photopolymerization with vinyl monomer as a matrix. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011