Facile controlled preparation of gold nanoparticles with amphiphilic thiacalix[41arene as reductant and stabilizer

摘要

A facile controlled synthesis method of gold nanoparticles (AuNPs) under mild conditions has been developed by combining the stabilization ability of amphiphilic thiacalixarene and the reduction ability of phenolic moieties together, and the particle sizes of AuNPs can be readily controlled by only adjusting the feeding ratio of Au/S.rnMetal nanoparticles have attracted intensive investigations in the past decade, because of their quantum-size-related properties and potential applications towards catalysis and biology. Among them, gold nanoparticles (AuNPs) are the most stable ones. Numerous research works of AuNPs are emphasized on controlling particles' size and crystalline morphologies, as well as stabilizing methods with different functional ligands in solution. Generally speaking, the chloroaurate ions are first complexed by a certain compound (template or stabilizer), and then reduced in situ by using various reducing agents to form the stable AuNPs.