Synthesis of metal-loaded poly(aminohexyl)(aminopropyl)silsesquioxane colloids and their self-organization into dendrites

被引:24
作者
Bronstein, LM [1 ]
Linton, C
Karlinsey, R
Stein, B
Svergun, DI
Zwanziger, JW
Spontak, RJ
机构
[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
[2] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA
[3] EMBL, Outstn, D-22603 Hamburg, Germany
[4] N Carolina State Univ, Dept Chem Engn, Raleigh, NC 27695 USA
[5] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
关键词
D O I
10.1021/nl025543g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Hydrolytic condensation of N-(6-aminohexyl)aminopropyltrimethoxysilane (AHAPS) in water results in the formation of spherical colloids measuring 40 to 190 nm in diameter and composed of a nearly fully condensed poly(aminohexyl)(aminopropyl)silsesquioxane (PAHAPS) nanostructure containing C-SiO3/2 species. Interaction of Pt and Pd salts with these PAHAPS colloids, followed by chemical reduction, results in the formation of discrete metal nanoparticles measuring ca. 1-2 nm in diameter stabilized within the colloids. Dendrites differing in size and shape are observed to form from aqueous solutions containing PAHAPS colloids loaded with metal salts or metal nanoparticles.
引用
收藏
页码:873 / 876
页数:4
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