Electron transfer from a surfactant-like zinc porphyrin to a covalently attached RuO sub 2 cluster

Journal Article · Thu Aug 08 04:00:00 EDT 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100169a045· OSTI ID:7265615

Resch, U; Fox, M A ^[1]

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1. Univ. of Texas, Austin (United States)

The photophysical properties of a surfactant-like zinc porphyrin and its diacid derivative, covalently attached, through a bipyridine unit, to a RuO{sub 2} cluster, are described. Intramolecular electron transfer from the excited zinc porphyrin to the bound RuO{sub 2} particles has been studied by fluorescence and flash photolysis techniques in homogeneous solution and in both fluorescence intensity and triplet yield by 95-97%. The lifetime of the zinc porphyrin triplet state is unaffected by binding to RuO{sub 2}, whereas the singlet stat lifetime is greatly shortened, suggesting electron transfer from the porphyrin excited singlet state to the RuO{sub 2} cluster. For the corresponding diacid porphyrin-RuO{sub 2} system, a diminution of the fluorescence intensity by 91% is observed.

• OSTI ID: 7265615
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 95:16; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AZINES
BIPYRIDINES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHARGED PARTICLES
COLLOIDS
COMPLEXES
DATA
DISPERSIONS
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
EMULSIONS
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
IONS
MICROEMULSIONS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PORPHYRINS
PYRIDINES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPLEXES
RUTHENIUM COMPOUNDS
RUTHENIUM OXIDES
SPECTROSCOPY
SURFACTANTS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
ZINC COMPLEXES