Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, PR China.
Macromol Rapid Commun. 2011 Nov 1;32(21):1741-7. doi: 10.1002/marc.201100377. Epub 2011 Aug 19.
Gold nanoparticles-coated polystyrene (AuNPs-coated PS) composite particles with raspberry-like morphology are successfully prepared with the aid of a unique thermodynamically driving effect. It is of considerable interest that the AuNPs generate and self-assemble with raw, ordinary PS microspheres that preexist in the oxidation-reduction systems. The synthesized AuNPs-coated PS composite particles have been extensively characterized using scanning electron microscope, transmission electron microscope, and UV-Vis-NIR spectroscopy. The results indicate that the morphology of the resultant composite particles is governed by simply changing the amount and type of reductants and the concentration of PS microspheres. The AuNPs-coated PS composite particles also exhibit the good surface-enhanced Raman scattering and catalytic performances.
具有树莓状形态的金纳米粒子包覆聚苯乙烯（AuNPs-coated PS）复合粒子在独特的热力学驱动效应的辅助下成功制备。有趣的是，AuNPs 在氧化还原体系中原位生成并自组装原始的普通 PS 微球。所合成的 AuNPs-coated PS 复合粒子已通过扫描电子显微镜、透射电子显微镜和紫外可见近红外光谱进行了广泛的表征。结果表明，所得复合粒子的形态可通过简单地改变还原剂的用量和类型以及 PS 微球的浓度来控制。AuNPs-coated PS 复合粒子还表现出良好的表面增强拉曼散射和催化性能。
