Monodisperse Gold-Copper Bimetallic Nanocubes: Facile One-Step Synthesis with Controllable Size and Composition

摘要

Gold and gold-containing alloy nanocrystals (NCs) with cubic morphologies have extraordinary crystalline structure and plasmonic properties, which facilitate multiple applications. For instance, cubic gold (or Au-Ag alloy) nanocages are promising candidates for nanoreactors used in photo-catalysis, and for many biomedical applications. In general, monodisperse cubic NCs are of great interest as building blocks for self-assembly, a significant step towards the controlled design of novel nanostructured materials and devices.Gold nanocubes have been produced using a variety of techniques, such as seed-mediated methods, electrochemical techniques,and polyol methods, whilst gold-containing alloy NCs with cubic morphologies have been produced only by galvanic replacement reactions.