N-heterocyclic carbene ligands as modulators of luminescence in three-coordinate gold(I) complexes with spectacular quantum yields
- Visbal, R. 2
- Ospino, I. 2
- López-De-Luzuriaga, J.M. 1
- Laguna, A. 2
- Gimeno, M.C. 2
-
1
Universidad de La Rioja
info
-
2
Instituto de Síntesis Química y Catálisis Homogénea
info
ISSN: 0002-7863
Année de publication: 2013
Volumen: 135
Número: 12
Pages: 4712-4715
Type: Article
D'autres publications dans: Journal of the American Chemical Society
Résumé
The first three-coordinate gold(I) N-heterocyclic carbene (NHC) complexes have been prepared with the nido-carborane diphosphine. The complexes are brightly luminescent and present very high quantum yield values. The carbene ligand is able to modulate the energy of the emissions and, depending upon the substituent, the luminescence changes from blue to green. Theoretical calculations corroborate that the emissions are phosphorescence and arise from charge transfer (LML′CT) transitions from nido-carborane ligand (L) to metal/ligand group "gold(I)-NHC ligand" (ML′). © 2013 American Chemical Society.