铜团簇/正己烷溶胶的光学特性研究

Study on optical properties of sols of copper clusters /n-hexane

采用脉冲激光轰击浸于流动正己烷中的铜靶,获得铜团簇/正己烷溶胶。UV-V is表明,铜团簇/正己烷溶胶在199、215、219和226 nm处有四个主要吸收峰;荧光光谱表明,铜团簇最大和第二激发峰位于308 nm和273 nm,相应发射峰位于370 nm和385 nm;TEM显示铜团簇随其粒径从小到大呈递减分布,平均粒径为14.1 nm。

Sols of copper clusters/n-hexane was prepared through pulsed laser ablation at the interface between copper solid target and a flowing liquid of hexane. Spectrum of UV-Vis shows that sols of copper clusters/n-hexane have four absorption peaks at 199,215,219 and 226 nm. Fluorescence indicates that the sols have two excitation peaks at 308 nm and 273 rim, and two emission peaks at 370 nm and 385 nm ;TEM reveals that the content of nanoparticles decreases with the increase of particle diameter, and the average diameter is 14.1 nm.