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  • A facile preparative method for Au-core, block copolymer-shell nanoparticles by UV irradiation of polystyrene-block-poly (2-vinyl pyridine)/HAuCl4 solutions.

A facile preparative method for Au-core, block copolymer-shell nanoparticles by UV irradiation of polystyrene-block-poly (2-vinyl pyridine)/HAuCl4 solutions.

Journal of nanoscience and nanotechnology (2010-12-09)
Hui Yang, Limei Xu, Xue Li, Xiaokai Zhang
ABSTRACT

The synthesis of gold nanoparticles (AuNPs) by UV irradiation of the solution of polystyrene-block-poly(2-vinyl pyridine)/HAuCl4 (PS-b-PVP/HAuCl4) complexes was investigated. AuNPs with block copolymer shell structures can be easily generated by simply control of the block copolymer concentration and the loading ratio of the HAuCl4 precursor. The cross-linked block copolymer shell structures were determined by transmission electron microscopy (TEM), contact angle measurement and thermogravimetic analysis (TGA). The obtained AuNPs with copolymer shells are stable in organic solvents and biochemical buffers.

MATERIALS
Product Number
Brand
Product Description

Supelco
Poly(2-vinylpyridine), analytical standard, average Mw 159,000 (Typical), average Mn 152,000 (Typical)
Supelco
Poly(2-vinylpyridine), analytical standard, average Mw 37,500 (Typical), average Mn 35,000 (Typical)