氧化铽团簇的表面修饰及对其荧光特性影响的研究

Surface Modification and Fluorescence Properties of Terbium Oxide Clusters

采用脉冲激光轰击浸于流动相中的氧化铽固体靶,考察了流动相及其流速、脉冲激光输出功率、修饰剂、添加修饰剂顺序等对所获得的氧化铽有机溶胶荧光性能的影响。UV-Vis和荧光光谱的测试表明:以含有修饰剂的无水乙醇作为流动相,可得到良好荧光性能的氧化铽乙醇溶胶,而环己酮与醋酸乙酯均不适合作为该体系的流动相;最佳流速为0.15mL·s-1;脉冲激光输出功率大有利于其荧光性能;最佳修饰剂为乙酰丙酮(acac)和2,2′-联吡啶(2,2′-bipy),且应原位修饰。

A pulsed laser ablation at the interface of terbium oxide target and mobile phase was used to study the effect of factors as the mobile phase and its flow rate, the pulsed laser power output, the coordination agents, the sequence of the coordination agents addition, on the fluorescence properties of terbium oxide clusters. The UVVis and fluorescence spectroscopy results reveal that anhydrous ethanol with coordination agents is the best mobile phase, which is efficient for the fluorescence properties of terbium oxide organic colloids, and cyclohexanone and ethyl acetate are found to be not suitable for this system; the flow rate of 0.15 mL·s^-1 is efficient; the largest power output of pulsed laser is the best; acac and 2,2＇-bipy are the best coordination agents which should be added into the mobile phase before preparation.