摘要
通过研究稀土配合物Eu(BA)3phen,Eu(SA)3phen和Eu(TBA)3phen的紫外可见吸收光谱和荧光光谱,分析了三种不同的有机配体的能级分布情况以及这些能级与Eu3+的最低激发态能级的匹配程度。紫外可见吸收光谱表明,三种稀土配合物具有不同的吸收峰。荧光光谱表明三种稀土配合物的荧光发射强度有很大差异。根据分析结果,解释了三种稀土配合物荧光强度的差别主要来源于三种不同的第一配体能级的吸收紫外光能力,以及与Eu3+的最低激发态能级的匹配程度。这种分析方法使用配体能级分布的理论探讨了稀土配合物内部能量传递过程的问题,为深入研究稀土配合物荧光材料提供了新的思路。
By investigating the UV-Vis spectra and fluorescent spectra of lanthanide complexes Eu（BA）3phen,Eu（SA）3phen and Eu（TBA）3phen,we analyzed energy level distribution of three different kinds of organic ligands and its match degree with the lowest excitation energy level of Eu3＋.UV-Vis spectra showed that the spectra were different for the three kinds of rare earth complexes.The emission intensities of the fluorescent spectra of the three kinds of rare earth complexes were quiet different.Based on the results,it could be explained that the difference of fluorescent intensities of the three lanthanide complexes originated from the capacity of first ligands to absorb ultraviolet light and their match degree of energy level with the lowest excitation energy level of Eu3＋.This analytical method adopted the theory of energy level distribution of ligands to investigate internal energy transfer of lanthanide complexes.It would provide a new thinking to study deeply fluorescent materials of lanthanide complexes.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2010年第6期693-698,共6页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金(50973003)
安徽省科技计划项目(090518026)
安徽高校省级自然科学研究重点项目(KJ2010A254)
阜阳师范学院自然科学项目基金(2008LQ13
2010FSKJ01ZD)和阜阳师范学院引进人才启动基金资助
关键词
荧光强度
稀土配合物
能级分布
匹配
能量传递
fluorescent intensity
lanthanide complexes
energy level distribution
match
energy transfer
