Amendola Vincenzo, Polizzi Stefano, Meneghetti Moreno
Department of Chemical Sciences, University of Padova, Via Marzolo 1, I-35131 Padova, Italy.
Langmuir. 2007 Jun 5;23(12):6766-70. doi: 10.1021/la0637061. Epub 2007 May 10.
Stable colloidal solutions of free silver nanoparticles (AgNPs) have been synthesized without reducing and stabilizing agents in pure acetonitrile and N,N-dimethylformamide by laser ablation of the bulk metal. Synthesis in tetrahydrofuran and dimethyl sulfoxide gave nanoparticles surrounded by a carbon shell or included in a carbon matrix. Mie theory for free and core@shell spheres accounts for the UV-vis spectra of the nanoparticles and allows their structural characterization. Transmission electron microscopy confirms the structure of the synthesized AgNPs. It is shown that free nanoparticles can be immediately functionalized, without further treatments, in the organic solvent used for the synthesis with molecules which are soluble in the same solvent.
通过对块状金属进行激光烧蚀，在纯乙腈和N，N - 二甲基甲酰胺中无需还原剂和稳定剂即可合成游离银纳米颗粒（AgNPs）的稳定胶体溶液。在四氢呋喃和二甲基亚砜中合成得到被碳壳包围或包含在碳基质中的纳米颗粒。自由球体和核壳球体的米氏理论解释了纳米颗粒的紫外可见光谱，并允许对其进行结构表征。透射电子显微镜证实了合成的AgNPs的结构。结果表明，游离纳米颗粒无需进一步处理，即可在用于合成的有机溶剂中立即与可溶于同一溶剂的分子进行功能化。
