Facile Surface Immobilization of ATRP Initiators on Colloidal Polymers for Grafting Brushes and Application to Colloidal Crystals

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题名:	Facile Surface Immobilization of ATRP Initiators on Colloidal Polymers for Grafting Brushes and Application to Colloidal Crystals
作者:	Liu,YY;Chen,H;Ishizu,K
贡献者:	化學工程與材料工程學系
关键词:	PHOTONIC CRYSTALS;THERMORESPONSIVE POLYMER;PARTICLE-SIZE;SILICA;NANOPARTICLES;FABRICATION
日期:	2011
上传时间:	2012-03-27 16:27:11 (UTC+8)
出版者:	國立中央大學
摘要:	Bromo-initiators for atom transfer radical polymerization (ATRP) were successfully immobilized on the surfaces of cross-linked poly(methyl methacrylate) (PMMA) spheres by soap-free emulsion polymerization using CBr(4) as the chain transfer agent. Subsequent surface-initiated ATRP (SI-ATRP) afforded a layer of PMMA brushes covalently attached to the sphere surfaces. Colloidal crystal films of these monodisperse spheres were then studied to identify the relationship between variation in particle diameter and the optical properties. The particle diameters were controlled by varying the feed monomer proportions in soap-free emulsion polymerization and the thickness of the grafted brush layer. It was found that the particle diameter could successfully be controlled to obtain crystal films that produce a variety of brilliant colors in the visible region. The results of this study can provide useful information for facile preparation of surface-immobilized ATRP initiators on colloidal polymers and can be employed for grafting polymer brushes.
關聯:	LANGMUIR
显示于类别:	[化學工程與材料工程學系 ] 期刊論文

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