LINEARLY POLARIZED LUMINESCENCE SPECTRA OF EU(2,6-PYRIDINE-DICARBOXYLATE)(3)(3-) IN HYDROXYLIC SOLUTION

被引：18

作者：

MESKERS, SCJ ^{[1
]}

RIEHL, JP ^{[1
]}

DEKKERS, HPJM ^{[1
]}

机构：

[1] MICHIGAN TECHNOL UNIV,DEPT CHEM,HOUGHTON,MI 49931

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 216卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(93)E1249-G

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：

Emission spectra and linearly polarized emission spectra are reported for Eu(2,6-pyridine-dicarboxylate = DPA)3(3-) in a hydroxylic glass (water/ethylene glycol, 1:2 by volume) at 157 K. The splitting pattern of the F-7J <-- 5D0 (J = 1, 2, 4) emission bands (in order of decreasing energy A2, E; E, E and E, A2, E, E) and their polarization anisotropies upon 465.8 nm irradiation are consistent with the complex having approximate D3 symmetry. The two F-7(1) <-- 5D0 bands have predominantly ( greater than or similar to 80%) magnetic dipole character. The polarization data upon excitation in the 290 nm absorption show that this band involves pi --> pi* ligand transitions, polarized perpendicular to the C2 axis of the DPA ligand. The angle between the C3 axis of the complex and the normal vector to the plane of the pyridine ring is found to be 41-degrees +/- 5-degrees.

引用

页码：241 / 246

页数：6

共 18 条

[1] STRUCTURAL STUDIES ON RARE-EARTH CARBOXYLATES .12. CRYSTAL AND MOLECULAR STRUCTURE OF TRICLINIC TRISODIUM TRIS-(PYRIDINE-2,6-DICARBOXYLATO)NEODYMATE(III) 15-HYDRATE [J].