The first photoexcitation step of ruthenium-based models for artificial photosynthesis highlighted by resonance Raman spectroscopy

Article Abstract:

Resonance Raman spectroscopy is used to investigate the photoexcitation step of a tetranuclear [[Ru.sub.2][Pd.sub.2]] complex composed of two ruthenium-bipyridyl subunits and two palladium-based fragments. The comparison between the resonance Raman spectra of the [[Ru.sub.2][Pd.sub.2]] complex and its mononuclear [Ru] building block and a normal-mode analysis has revealed that the [[Ru.sub.2][Pd.sub.2]] resonance Raman spectrum is composed from peaks arising from the [Ru] fragment.

Usage, Photosynthesis research, Raman spectroscopy, Excited state chemistry, Report

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Multiple DNA binding modes of a metallointercalator revealed by DNA film voltammetry

Article Abstract:

Redox reaction and binding of the metallointercalator Ru(bpy)2[(dppz).sup.2+] with DNA is investigated by DNA film voltammetry. The intercalation positions the metal complex in close contact with the guanines inside DNA resulting in fast electrocatalytic reaction, giving rise to a catalytic pre-peak.

Analysis, Observations, Oxidation-reduction reaction, Oxidation-reduction reactions, DNA-ligand interactions, DNA binding, Voltammetry

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