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- Title
Architecture of colloidal crystals constructed by silica hybrid nanoparticles.
- Authors
Koji Ishizu; Yoko Tokuno; Dong Hoon Lee; Satoshi Uchida; Masaaki Ozawa
- Abstract
Silica (SiO2)âcrosslinked polystyrene (PS) particles possessing photofunctional N,Nâdiethyldithiocarbamate (DC) groups on their surface were prepared by the freeâradical emulsion copolymerization of a mixture of SiO2(diameter Dn= 192 nm), styrene, divinyl benzene, 4âvinylbenzyl N,Nâdiethyldithiocarbamate (VBDC), and 2âhydroxyethyl 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 SiO2particles were synthesized by the grafting from a photoinduced atom transfer radical polymerization (ATRP) approach of methyl methacrylate initiated by SiO2âcrosslinked PS particles as a macroinitiator. We constructed the colloidal crystals using these photofunctional particles. Moreover, the SiO2particle array of colloidal crystals was locked by radical photopolymerization with vinyl monomer as a matrix. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
- Subjects
SILICA; POLYSTYRENE; DIETHYLDITHIOCARBAMATE; EMULSIONS; IRRADIATION; NANOPARTICLES
- Publication
Journal of Applied Polymer Science, 2011, Vol 120, Issue 1, p43
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.31473