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Photochemistry of Ru(bpy)/sub 3//sup 2 +/

Journal Article · · J. Am. Chem. Soc.; (United States)
DOI:https://doi.org/10.1021/ja00382a012· OSTI ID:6800325
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Temperature-dependent lifetime data in dichloromethane are reported for the emitting charge-transfer excited state of Ru(bpy)/sub 3//sup 2 +/ (/sup 3/CT) (bpy is 2,2'-bipyridine) under photochemical (NCS/sup -/ salt) and nonphotochemical (PF/sub 6//sup -/ salt) conditions. Temperature-dependent lifetime data have also been obtained in dichloromethane for the salts (Ru(bpy)/sub 2/(py)/sub 2/)(PF/sub 6/)/sub 2/ (py is pyridine) and (Ru(phen)/sub 3/)(PF/sub 6/)/sub 2/ (phen is 1,10-phenanthroline) as have temperature-dependent quantum-yield data for photochemical loss of bpy, (Ru(bpy)/sub 3/)X/sub 2/ (+hv) ..-->.. ((bpy)/sub 2/RuX(bpy))X ..-->.. (bpy)/sub 2/RuX/sub 2/ + bpy, for the salt (Ru(bpy)/sub 3/)(NCS)/sub 2/ (THETA/sub p/(25/sup 0/C) = 0.068). The data obtained here, combined with the data and suggestions made earlier by Van Houten and Watts (ref 2 and 11) based on their experiments in water, suggest a detailed view of the microscopic events which lead to photosubstitution. 4 figures, 4 tables.
Research Organization:
Univ. of North Carolina, Chapel Hill
OSTI ID:
6800325
Journal Information:
J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 104:18; ISSN JACSA
Country of Publication:
United States
Language:
English

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Related Subjects

08 HYDROGEN
080106 -- Hydrogen-- Production-- Biosynthesis & Photochemical Processes
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500 -- Photochemistry
ABSORPTION SPECTRA
ANTITHYROID DRUGS
AQUEOUS SOLUTIONS
AZINES
CARBONIC ACID DERIVATIVES
CHEMICAL REACTION KINETICS
CHEMISTRY
COMPLEXES
DATA
DISPERSIONS
DRUGS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HORMONE ANTAGONISTS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONIZATION
KINETICS
LASER RADIATION
MEDIUM TEMPERATURE
METHYLENE CHLORIDE
MIXTURES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
ORGANIC SULFUR COMPOUNDS
PHENANTHROLINES
PHOSPHORUS COMPOUNDS
PHOSPHORUS FLUORIDES
PHOTOCHEMISTRY
PHOTOIONIZATION
PYRIDINES
RADIATIONS
REACTION KINETICS
RUTHENIUM COMPLEXES
SOLUTIONS
SOLVENTS
SPECTRA
SULFURIC ACID
TEMPERATURE DEPENDENCE
THIOCYANATES
TIME DEPENDENCE
TRANSITION ELEMENT COMPLEXES