Time-Resolved Resonance Raman Spectroscopy of the Excited States of Ru(II) Complexes with Novel Polynucleating Ligands
For more than a decade transient resonance Raman spectroscopy using pulsed laser excitation has been an established technique for probing the excited states of metal complexes, though there are relatively few reports of true time-resolved resonance Raman (TR3) studies involving two lasers in a pump-delayed probe arrangement. Some recent examples are listed [2,3]. We have used such two laser methods on the nanosecond timescale to investigate the decay processes following metal-ligand charge-transfer (MLCT) excitation of some heteroleptic complexes of Ru(II) with the novel ligand 1,4,5,8,9,12-hexaazatriphenylene (HAT) and either 2,2′-bipyridyl (bpy), 1,4,5,8-tetraazaphenanthrene (TAP) or 1,10-phenanthroline (phen).
KeywordsPhotolysis Phen Phenanthroline Bipyridyl
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