Solution medium control of the photoredox yield in the Ru(bpy)/sub 3//sup 2 +//methyl viologen/EDTA system

Journal Article · Thu Jan 19 04:00:00 EST 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150646a006· OSTI ID:6855947

Mandal, K; Hoffman, M Z

The observed quantum yield of formation of the methyl viologen radical cation, phi(MV/sup +/-), upon 450-nm irradiation of the Ru(bpy)/sub 3//sup 2 +//methyl viologen dication/EDTA system at pH 11.0 is dependent on the concentrations of all three components. Under the conditions of the experiments, phi(MV/sup +/-)approx. =2eta/sub cr/ where eta/sub cr/ is the efficiency of release of redox products from the solvent cage. The maximum value of eta/sub cr/ is approx. =0.17 at high concentrations of all components where the photosensitizer, electron relay, and sacrificial electron donor exist as ion-paired aggregates within a single solvent-caged unit. 3 figures.

• Research Organization: Boston Univ., MA
• OSTI ID: 6855947
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:2; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AMINO ACIDS
AZINES
BIPYRIDINES
CARBOXYLIC ACIDS
CHELATING AGENTS
CHEMICAL REACTIONS
DECOMPOSITION
EDTA
ELEMENTS
HETEROCYCLIC COMPOUNDS
MECHANICS
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PLATINUM METALS
PYRIDINES
QUANTUM MECHANICS
QUENCHING
REDOX REACTIONS
RUTHENIUM
TRANSITION ELEMENTS