Article ID Journal Published Year Pages File Type
1525770 Materials Chemistry and Physics 2010 7 Pages PDF
Abstract

Flat gold prisms that have micrometer-scale edge length and nanometer-scale thickness (micro-prisms, as defined by edge length of prisms) were synthesized through a facile solution-phase synthetic method. Two effective measures were adopted in order to prepare the well-defined micro-prisms: (i) selecting poly(N-vinylpyrrolidone)(PVP) as the shape-directing agent to induce the preferential growth of small gold nanocrystals and (ii) using a weak reducing agent, ethylene glycol (EG), to slow down the reduction rate of AuCl4− ions. Besides, the light played an important role in inducing the formation of tiny nanoprisms in the early stages of Au(III) ion reduction. Considering that gold nanoclusters have a strong tendency to heterogeneous nucleation at solid/liquid interfaces followed by the preferential planar growth, gold prism thin films were thus fabricated on glass substrates.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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