Photoinitiated electron collection in a mixed-metal trimetallic complex of the form [[(bpy)[sub 2]Ru(dpb)][sub 2]IrCl[sub 2]](PF[sub 6])[sub 5] (bpy = 2,2[prime]-bipyridine and dpb = 2,3-Bis(2-pyridyl)benzoquinoxaline)
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)
Since the synthesis of [Ru(bpy)[sub 3]][sup 2+ ] and its subsequent study in excited-state electron-transfer reactions, much attention has focused on the inclusion of multiple ruthenium chromophores into single molecules. Systems of this type are of interest due to their potential for photoinitiated electron collection. This report illustrates the application of a system with two ruthenium polypyridine chromophores to this problem. This represents the first report of photoinitiated electron collection wherein two covalently coupled ruthenium chromophores function within the same molecule to bring about electron collection. The system described herein is of the form [[(bpy)[sub 2]Ru(dpb)][sub 2]IrCl[sub 2]][sup 5+] (bpy = 2,2[prime]-bipyridine and dpb = 2,3-bis(2-pyridyl)benzoquinoxaline) and is one in a series of mixed-metal trimetallics designed and developed in our laboratory. Photolysis of this complex in the presence of an electron donor dimethylaniline, leads to the production of the doubly reduced species, [[(bpy)[sub 2]Ru(dpb[sup [minus]])][sub 2]IrCl[sub 2]][sup 3+]. Following photolysis, the complex now contains two reduced dpb bridging ligands coordinated to a central iridium core. 13 refs., 4 figs.
- OSTI ID:
- 6991124
- Journal Information:
- Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 116:12; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
Similar Records
Osmium(II)/Ruthenium(II) trimetallics incorporating polyazine bridging ligands: Isovalent near-IR absorbers with unique electrochemical behavior
Preparation and characterization of cis-{Lambda}-[Ru(bpy){sub 2}(py)(O)]{sup 2+}
Related Subjects
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
400500 -- Photochemistry
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
CONVERSION
DECOMPOSITION
ELECTRON SPECTROSCOPY
ELECTRON TRANSFER
ENERGY CONVERSION
IRIDIUM COMPLEXES
LIGANDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLYSIS
RUTHENIUM COMPLEXES
SOLAR ENERGY CONVERSION
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES