LUMINESCENCE PROPERTIES OF CRYPTATE EUROPIUM(III) COMPLEXES INCORPORATING HETEROCYCLIC N-OXIDE GROUPS

被引:61
|
作者
PRODI, L [1 ]
MAESTRI, M [1 ]
BALZANI, V [1 ]
LEHN, JM [1 ]
ROTH, C [1 ]
机构
[1] UNIV STRASBOURG 1,INST LE BEL,F-67070 STRASBOURG,FRANCE
关键词
D O I
10.1016/0009-2614(91)87114-Q
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The luminescence spectra, lifetimes, and quantum yields of the cryptate-type complexes [Eu subset-of 1]3+ and [Eu subset-of 2]3+, where 1 and 2 are cryptand-type ligands containing two 2,2'-bipyridine (bpy) and one 2,2'-bipyridine-1,1'-dioxide (bpyO2) units (1) or two bpy and one 3,3'-biisoquinoline-2,2'-dioxide (biqO2) units (2), have been measured in H2O and D2O at 77 and 300 K. The luminescence quantum yield upon excitation in the ligand-centered bands is much higher than that exhibited by the previously investigated [Eu subset-of bpy.bpy.bpy]3+ cryptate. The role played by various radiative and non-radiative paths is discussed.
引用
收藏
页码:45 / 50
页数:6
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