发粉红色荧光的含铽络合物光谱表征

SPECTROSCOPIC CHARACTERIZATION OF A NEW TERBIUM COMPLEX WITH RED FLUORESCENCE

本文报道合成了可发出粉红色荧光的含铽络合物２－萘甲酸－邻菲罗啉－铽，并对其进行了荧光光谱及红外光谱研究，结果表明：由于２－萘甲酸、邻菲罗啉配体的混配作用，使铽离子的５Ｄ４－７Ｆ３跃迁产生较强的６１５ｎｍ发射峰，其发射强度大于由５Ｄ４－７Ｆ５跃迁产生的５４５ｎｍ发射峰，因而络合物发出粉红色荧光。

Usually,the emission spectra of terbium complexes exhibit 490nm,545nm bands(green color)under the excitation of UV light,which is ascribed to the two  5D 4 7F 6, 5D 4 7F 5 transition.In this report,pink red fluorescence under the excitation of 300—370nm UV light is observed for a new 1,10 phenanthroline 2 naphthoate complex of terbium.The fluorescence,FT IR,ICP and X ray fluorescence analysis were performed.The results showed that under the perturbation of the ligands field,the probability of  5D 4 7F 3 transition of terbium ion was greatly enhanced,while the probability of  5D 4 7F 5 transition was greatly decreased in the complex.Therefore,pink red fluorescence was observed for the title complex.