Observation of electroluminescence at room temperature from a ruthenium(II) bis-terpyridine complex and its use for preparing light-emitting electrochemical cells.
A terpyridine ruthenium (II) complex containing a substituted and an unsubstituted terpyridine ligand was synthesized, and its luminescence properties were studied in a solid-state single-layer light-emitting electrochemical cell. The obtained devices emitted light of a very deep red color (CIE, x = 0.717 y = 0.282) at low external applied bias. It is the first example of an electroluminescence device based on a bis-chelated ruthenium complex. Its ambient atmosphere decay is remarkably different from analogous devices using tris-chelated ruthenium complexes.
Bolink
Henk J
HJ
Institute of Molecular Science, University of Valencia, Dr. Moliner 50. 46100 Burjassot, Valencia, Spain. henk.bolink@uv.es
Cappelli
Luca
L
Coronado
Eugenio
E
Gaviña
Pablo
P