LM Bronstein, CN Linton, RL Karlinsey, B Stein, DI Svergun, JW Zwanziger, RJ Spontak. Synthesis of metal-loaded poly(aminohexyl)(aminopropyl)silsesquioxane colloids and their self-organization into dendrites. Nano Letters 2(8), 873 (2002).
Abstract
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 observed to form from aqueous solutions containing PAHAPS colloids loaded with metal salts or metal nanoparticles.
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Dr. Robert L. Karlinsey earned a BS in Physics and PhD in Chemical Physics, holds several patents, and has published in multiple fields including dentistry, chemistry, and materials science. His lifelong struggles with his own dental decay ultimately inspired him to investigate the remineralization of teeth.