pH-dependent electron transfer from re-bipyridyl complexes to metal oxide

Article Abstract:

The dependence of Re(L(sub p))(CO)3Cl (or ReClP) [Lp = 2,2'-bipyridine-4,4'-bis-CH2PO(OH)2] and Re(LA)(CO)3Cl (or ReClA) [L(sub A)=2,2'-bipyridine-4,4'-bis-CH2COOH] sensitized TiO2 and ReClP sensitized SnO2 nanocrystalline thin films is examined. Results suggests that the observed pH-dependent electron transfer rate can be qualitatively accounted for by considering the change of density of electron-accepting states caused by the pH-dependent conduction band edge position.

Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Pyridine, Rhenium, Metallic oxides, Metal oxides, Atomic properties

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Ultrafast electron transfer from Ru polypyridyl complexes to Nb2)5 nanoporous thin films

Article Abstract:

Electron transfer dynamics from RuN3 to amorphous Nb2O5 film were investigated by monitoring the evolution of the RuN3 cation CN stretching bands and the corresponding broad mid-IR absorption signal of injected electrons in semiconductor. From RuN3 to Ru5O5 to Ru470, both the amplitude of the fast component and the rate of slow injection diminish, correlating with less negative excited state redox potentials in these dyes.

Ruthenium, Columbium, Niobium

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Comparison of electron transfer dynamics in molecule-to-nanoparticle and intramolecular charge transfer complexes

Article Abstract:

Ultrafast electron-transfer dynamics of a catechol-TiO2 nanoparticle charge transfer (CT) complex and an intramolecular CT complex, [Ti(cat)3](super 2-) are compared. Both complexes show similar CT bands, suggesting similar donor (catechol) and acceptor(Ti) orbitals are involved in CT transition.

Methods, Analysis, Charge transfer, Chemical properties, Catechin

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