Abstract
Ruthenium tris–2,2′-bipyridine complexes 1, 2 and 3 have additional non-coordinated basic pyridine or bipyridine moieties within their structures. Upon protonation they reversibly become suitable acceptor sites for intramolecular photoinduced electron transfer by which the ruthenium tris–2,2′-bipyridine emission is quenched. The pH dependent emission was studied in organic solvents and ...
Abstract
Ruthenium tris–2,2′-bipyridine complexes 1, 2 and 3 have additional non-coordinated basic pyridine or bipyridine moieties within their structures. Upon protonation they reversibly become suitable acceptor sites for intramolecular photoinduced electron transfer by which the ruthenium tris–2,2′-bipyridine emission is quenched. The pH dependent emission was studied in organic solvents and water.
Luminescent ruthenium complexes having additional non-coordinated basic pyridine or 2,2′-bipyridine units within their structures are reported. Upon protonation of the free ligands photoinduced electron transfer from the ruthenium moiety to the protonated unit is observed in some of the complexes. The pH dependent emission properties are reported in organic solvent and in water.
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