Photoluminescence and molecular structure of tetrakis(N,N-dimethyldithiocarbamato)europate(III)

被引：19

作者：

Kobayashi, T ^{[1
]}

Naruke, H ^{[1
]}

Yamase, T ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, RES LAB RESOURCES UTILIZAT, MIDORI KU, YOKOHAMA, KANAGAWA 226, JAPAN

来源：

CHEMISTRY LETTERS | 1997年 / 09期

关键词：

D O I：

10.1246/cl.1997.907

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photoexcitation of the sulfur(S)-to-europium(Eu) charge-transfer bands in Na[Eu(S2CNMe2)(4)].3.5H(2)O at the low temperature (< 100 K) leads to the D-5(0)-->F-7(J) (J=0-4) luminescence of Eu3+ as a result of the energy transfer to the D-5(0) state. The luminescence and excitation spectra reveal the dithiocarbamato-ligand phonon assisted electronic transition involved in the small energy gap (similar to 1800 cm(-1)]) between the D-5(1) and D-5(0) levels. The luminescence lifetime (0.11 +/- 0.01 ms at 4.2 K) decreases with increasing temperature, probably due to the thermal crossover relaxation from D-5(0) to the S-->Eu charge transfer states.

引用

页码：907 / 908

页数：2