PHOTOLUMINESCENT METAL-(BIS)LIGAND COMPLEXES HAVING DIFFERENT LIGANDS

摘要

Photoluminescent complexes of copper, silver, zinc, lithium or similar metalsare described, being (bis)ligand, with two different ligands. A variety ofligands may be used, the larger ligand being of a size or shape such that apair of such ligand are prevented by steric properties from forming a(bis)ligand complex with the metal. Preferred substituents may be alkyl, arylor alkaryl hydrocarbons, or halogen, chalcogen, nitrogen or phosphorusmoieties, or included heteroatoms. Formulation of the (bis)ligand complex isaccomplished by maintaining the molar ratios of reactants at that which isequivalent to the (bis)ligand complex composition. The complexes are useful asoptical sensors for O2, NH3 and NOx, in dye sensitization for photovoltaicdevices/solar cells, in producing visible TiO2 photosensitization and in H2production from the photochemically splitting water. These heterolepticcomplexes exhibit photoluminescence equal to or better than rutheniumhomoleptic complexes.