Preparation of multilayered gold-silica-polystyrene core-shell particles by seeded polymerization

Journal of Colloid and Interface Science
Shunchao GuM Konno

Abstract

A preparation method for multilayered gold-silica-polystyrene core-shell composite particles is proposed. The gold-silica core-shell particles of 192-nm-sized, synthesized by coating the 18-nm-sized gold particles with silica by a seeded growth technique, were used as cores for succeeding polystyrene coating. After surface modification of gold-silica composite particles by methacryloxypropyltrimethoxysilane (MPTMS), polymerizations of styrene (0.16-0.4 M) were conducted with 8 x 10(-3) M of potassium persulfate initiator in the presence of 1 x 10(-3) M of sodium p-styrenesulfonate anionic monomer. Multilayered core-shell gold-silica-polystyrene particles that contained a single core could be obtained. The coefficient of variation of size distribution (CV) of the composite particles was less than 7%, and polystyrene shell thickness was in a range of 193 to 281 nm.

References

Feb 4, 1999·Journal of Colloid and Interface Science·E Bourgeat-Lami, J Lang
Jan 7, 2000·Journal of Colloid and Interface Science·V V Hardikar, E Matijevic

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Citations

Jun 17, 2006·Journal of Colloid and Interface Science·JianJun ZhangFengQi Liu
Apr 3, 2018·ACS Nano·Theodore Hueckel, Stefano Sacanna

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