Stepwise controlled immobilization of colloidal crystals formed by polymer-grafted silica particles.
Stepwise controlled immobilization of colloidal crystals formed by polymer-grafted silica particles.
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DOI：
10.1021/la0467786
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
K. Yoshinaga;Kumiko Fujiwara;E. Mouri;M. Ishii;Hiroshi Nakamura
中科院分区：
文献类型：
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作者：
K. Yoshinaga;Kumiko Fujiwara;E. Mouri;M. Ishii;Hiroshi Nakamura
采用自由基共聚凝胶化、开环自由基聚合固化的方法对接枝二氧化硅粒子形成的胶体晶体进行固定化。第一步，通过交联剂1，2-二甲基丙烯酰氧基乙烷(DME)和甲基丙烯酸甲酯(MMA)的共聚反应，在不改变凝胶结构的前提下，将聚甲基丙烯酸甲酯(PMMA)接枝到二氧化硅胶体晶体悬浮液中。第二步，用亚乙叉-1，3-二氧杂环戊烷取代溶剂，进行开环自由基聚合。通过这种两步法，胶体晶体的二氧化硅颗粒阵列被固定并制成耐用材料。
Colloidal crystals formed by polymer-grafted silica particles were immobilized by a stepwise procedure consisting of gelation by radical copolymerization followed by solidification by ring-opening radical polymerization. In the first step, the poly(methyl methacrylate) (PMMA)-grafted silica colloidal crystal suspension was incorporated into the gel without altering the crystal structure by copolymerization of cross-linker, 1,2-dimethylacryloyloxyethane (DME) and methyl methacrylate (MMA). In the second step, ring-opening radical polymerization was performed after substituting the solvent with vinylidene-1,3-dioxolane. By this two-step procedure, the silica particle array of colloidal crystals was immobilized and made into durable material.