Combined investigation of four colloids for artificial photosynthesis by scanning electron microscopy, quasielastic light scattering, and bis-heteroleptic styrene-attached ruthenium complexes, adsorbed at the water/colloid interface
- Universitaet des Saarlandes, Saarbruecken (Germany)
- Universitaet Karlsruhe (Germany)
In this report we discuss the combined application of scanning electron microscopy and quasielastic light scattering as well as UV/vis titrations employing [Ru(bpy)[sub 3]][sup 2+] and especially designed bis-heteroleptic sensor ruthenium complexes [Ru(bpy)[sub 2](MS-R)][sup 2+], [Ru(bpy)[sub 2](DS-R)][sup 2+], [Ru(tap)[sub 2](MS-R)][sup 2+], and [Ru(tap)[sub 2](DS-R)][sup 2+] (bpy = 2,2[prime]-bipyridine, tap = tetraazaphenanthrene) possessing mono- and bis-styrene-attached tetraazaphenanthrene units as third ligands for the characterization of Ru, RuO[sub 2], IrO[sub 3], and MnO[sub 2] colloids, as they are commonly used in model systems for artificial photosynthesis. The elucidation of the binding mechanisms and orientation and the arising supramolecular photoelectron transfer properties of ruthenium sensitizers adsorbed on metal colloids can be regarded as tools for the generation of highly efficient systems for artificial photosynthesis. We describe in this paper a simple and application-oriented method for the evaluation of the catalyst's effective surface in water solution and characteristic differences in the binding and interaction modes of [Ru(bpy)[sub 3]][sup 2+] to the four colloidal catalysts and the bis-heteroleptic sensor complexes listed above with the ruthenium colloid. 30 refs., 12 figs., 2 tabs.
- OSTI ID:
- 6891740
- Journal Information:
- Langmuir; (United States), Vol. 10:12; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
PHOTOSYNTHESIS
EVALUATION
WATER
REDUCTION
ADSORPTION
CATALYSTS
COLLOIDS
COMPILED DATA
IRIDIUM OXIDES
LIGANDS
LIGHT SCATTERING
MANGANESE OXIDES
MATHEMATICAL MODELS
ORGANOMETALLIC COMPOUNDS
RUTHENIUM
RUTHENIUM COMPLEXES
RUTHENIUM OXIDES
SCANNING ELECTRON MICROSCOPY
SENSITIZERS
STYRENE
TITRATION
ALKYLATED AROMATICS
AROMATICS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPLEXES
DATA
DISPERSIONS
ELECTRON MICROSCOPY
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
IRIDIUM COMPOUNDS
MANGANESE COMPOUNDS
METALS
MICROSCOPY
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PLATINUM METALS
REAGENTS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
SCATTERING
SORPTION
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
140505* - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)
400201 - Chemical & Physicochemical Properties
400500 - Photochemistry
990200 - Mathematics & Computers