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

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2001年 / 11卷 / 08期

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

页码：1968 / 1971

页数：4

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