Temperature effects on the luminescence of Re(I) complexes: on the competitive relaxations of two electronic states
Autor: | J. Guerrero, I. Hsu, Ezequiel Wolcan, Guillermo Ferraudi, S. A. Moya, M.R. Feliz |
---|---|
Rok vydání: | 1995 |
Předmět: | |
Zdroj: | The Journal of Physical Chemistry. 99:4929-4934 |
ISSN: | 1541-5740 0022-3654 |
Popis: | Emission spectra and luminescence rates of Re(CO){sub 3}L{sub 2}X (L{sub 2} = pyridine or bisquinoline derivatives, X = halide) have been measured in various media at temperatures between 298 and 77 K. The emission has been associated with parallel relaxations of two excited states: an intraligand state and a metal-to-ligand charge-transfer state. Rates of emission correlate with the excited state - ground state energy gap. Mechanisms mixing intraligand with charge-transfer states are proposed as means to explain the dependence of the emission rate on temperature. 41 refs., 6 figs. |
Databáze: | OpenAIRE |
Externí odkaz: |