Facile synthesis of hollow silica microspheres

被引:164
作者
Fowler, CE [1 ]
Khushalani, D [1 ]
Mann, S [1 ]
机构
[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
关键词
D O I
10.1039/b102675p
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Hollow silica microspheres were synthesised at room temperature from a vortexed mixture of water and droplets of tetraethoxysilane (TEOS) containing 10 mol% aminopropyltriethoxysilane: droplets stabilized with the surfactant cetyltrimethylammonium bromide produced silica shells, 30.6 mum in mean diameter, whereas replacing the Br- counterion with [Co(B9C2H11)(2)](-) gave an approximately hundred-fold decrease in the size of the hollow spheres. Organo-functionalized hollow microspheres containing a covalently linked dye moiety were prepared by replacing 5 mol% of TEOS with dinitrophenylaminotriethoxysilane in the reaction mixture, and encapsulation of TEOS-soluble additives within the silica shells was demonstrated by incorporating porphyrin molecules and particles into the ethoxysilane droplets.
引用
收藏
页码:1968 / 1971
页数:4
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