Fluorescence and cofluorescence enhancement of Tb(Ⅲ) complexes with pyromellitic acid by M (M = Gd, La, Ca, and Sr ions)

来源期刊：Rare Metals2004年第1期

论文作者：WANG Zhengxiang, CHEN Hong, SHU Wangen, ZHAO Dongbai, and ZHOU Zhongcheng) College of Chemistry and Chemical Engineering, Central South University, Changsha , China) Key Laboratory of New Materials and Technology of China National Packaging Corporation, Zhuzhou Institute of Technology, Zhuzhou , China

文章页码：32 - 37

摘    要：<正> Fluorescence and cofluorescence properties of Tb（Ⅲ） solid complexes were studied using pyromellitic acid （PMA） as ligand and fluorescence inert ions as doping elements. The cofluorescence enhancement, a result of ligand sensitized fluorescence, was observed in Tb（Ⅲ） solid complexes doped with fluorescent inert ions La（Ⅲ）, Gd（Ⅲ）, Ca（Ⅲ）, and Sr（Ⅲ）. The effect of the type and content of doping elements on fluorescence enhancement was studied, and optimum conditions were determined. The results show that Gd （La, Ca, Sr） has clear cofluorescence effect in solid complex Tb-M-PMA system, and in present work, rare earth complex fluorescent powder that emits bright green fluorescence at ultraviolet excitation was obtained, which had potential application as fluorescent anti-counterfeit ink.