A study of the fluorescence of some newly synthesized europium complexes with pyrazolone derivatives
作者:Dong-Jin Qian、Wei-Nan Leng、Yuan Zhang、Zhong Chen、J Van Houten
DOI:10.1016/s1386-1425(00)00306-1
日期:2000.12
Some europium complexes with pyrazolone derivatives and 1,10-phenanthroline were synthesized and characterized. The europium ion was found to coordinate to O atoms of the pyrazolone derivatives and to N atoms of 1,10-phenanthroline. A strongly ligand-localized UV absorption leads to the europium-centered emissions between 580 and 750 nm which were assigned as the 5D0-->7F0,1,2,3,4 and 5D1-->7F3,4 transitions
合成了一些与吡唑啉酮衍生物和1,10-菲咯啉的配合物。发现离子与吡唑啉酮衍生物的O原子和1,10-菲咯啉的N原子配位。强烈的配体局部UV吸收导致在580至750 nm之间以the为中心的发射,这些发射被指定为5D0-> 7F0,1,2,3,4和5D1-> 7F3,4过渡。通过观察5D0-> 7F0发射以及其他条带的分裂,可以确认Eu3 +离子的位点对称性较低。与许多已研究过的Eu络合物相反,通过引入席夫碱形成与吡唑啉酮衍生物的三元络合物,可测量到相当弱的发射。