Heteroleptic cyclometalated iridium(III) complexes featuring lepidine-based ligands and acetyl acetone auxiliary ligand are synthesized. Multiple lowest energy absorption bands are observed for these complexes indicating substantial mixing of the singlet and triplet levels. All the complexes emit orange or red color in dichloromethane solutions with lifetimes in the range 1.6-3.7 mu s. The emission in the complexes probably originates from the (MLCT)-M-3 state. The complexes are applied as emitting guests in LED devices of the structure ITO/HTL(BPAPF or NPB)/6% Ir in CBP/BCP/Alq(3)LiF/Al. They exhibit excellent device characteristics with an orange to red EL profile.
[EN] IRIDIUM BASED COMPLEX FOR WATER SPLITTING<br/>[FR] COMPLEXE À BASE D'IRIDIUM POUR LA DISSOCIATION DE L'EAU
申请人:UNIV QUEENSLAND
公开号:WO2012122605A1
公开(公告)日:2012-09-20
In a general form, there is provided a cyclometalated iridium complex, which in one application can be used as a catalyst for water splitting. In one form, the cyclometalated iridium complex includes bandgap lowering ligands, for example aryl quinoline. In another form, the cyclometalated iridium complex includes bandgap widening ligands, for example aryl triazole. In a particular example, one or more additional linking groups are included to improve solubility of the complex. In another particular example, one or more additional linking groups are included to improve attachment of the complex to a semiconductor or an electrode. According to a specific example, there is a cyclometalated iridium complex having the structure wherein, Ar is an aryl group, or a fused or heterocyclic arene or ring.
作者:K. R. Justin Thomas、Marappan Velusamy、Jiann T. Lin、Chin-Hsiung Chien、Yu-Tai Tao、Yuh S. Wen、Ya-Hui Hu、Pi-Tai Chou
DOI:10.1021/ic050385s
日期:2005.8.1
Heteroleptic cyclometalated iridium(III) complexes featuring lepidine-based ligands and acetyl acetone auxiliary ligand are synthesized. Multiple lowest energy absorption bands are observed for these complexes indicating substantial mixing of the singlet and triplet levels. All the complexes emit orange or red color in dichloromethane solutions with lifetimes in the range 1.6-3.7 mu s. The emission in the complexes probably originates from the (MLCT)-M-3 state. The complexes are applied as emitting guests in LED devices of the structure ITO/HTL(BPAPF or NPB)/6% Ir in CBP/BCP/Alq(3)LiF/Al. They exhibit excellent device characteristics with an orange to red EL profile.