| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1331846 | Journal of Solid State Chemistry | 2009 | 6 Pages |
Gold microparticles were prepared from the gold salt in the solid bulk phase of a poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) block copolymer via a photoreduction process in the presence of halide ions. The shapes and sizes of the gold microparticles were found to be dependent on the types and amount of halide ions as well as the types of cations used due to the combined effects of the adsorption power and oxidative dissolution ability of the additives on gold surfaces. Gold nanorods were obtained when poly(ethylene oxide) was used instead of the block copolymer. This suggests that the poly(propylene oxide) (PPO) parts in the block copolymer are essential for the formation of gold microparticles, even though the degree of the direct interaction between the PPO blocks and gold salt is not significant.
Graphical abstractGold microparticles were successfully prepared using halide ions as additives in the polymeric bulk phase via photoreduction with the glow lamp irradiation.Figure optionsDownload full-size imageDownload as PowerPoint slide
