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Title: Excited states of mixed-ligand chelates of ruthenium. II. Quantum yield and decay time measurements

Journal Article · · J. Am. Chem. Soc.; (United States)
DOI:https://doi.org/10.1021/ja00400a032· OSTI ID:6040351

The photoluminescence of a series of (Ru(II)(bpy)/sub m/(N-N)/sub n/)/sup 2 +/ cations (m = 3 - n; n = 0, 1, 2, 3; bpy = 2,2'-bipyridine; N-N = 1,10-phenanthroline (phen) or substituted phen or substituted bpy) was investigated. All compounds displayed a prominent visible luminescence, a single approx. 1.3 kK vibration progression, and an approx. 5 ..mu..s decay time at 77/sup 0/K that increased monotonoically as the temperature was lowered. Quantum yields at 77/sup 0/K ranged between 0.35 and 0.58. The data were analyzed in terms of a charge-transfer-to-ligand excited manifold of three levels.

Research Organization:
Washington State Univ., Pullman
OSTI ID:
6040351
Journal Information:
J. Am. Chem. Soc.; (United States), Vol. 103:10
Country of Publication:
United States
Language:
English