Experimental verification of the through-bond mechanisms of electron transfer in bridged donor-acceptor complexes

Article Abstract:

The relative importance of through-space and through-bond mechanisms for electron-transfer reactions were studied in two rigid bischromophoric systems featuring identical donor and acceptor moieties. Back-electron-transfer dynamics following photoexcitation of the ground-state charge-transfer absorption band were the same in the two systems as revealed by time-resolved laser measurements. The results provided direct evidence for the through-bond mechanism of electron transfer in bridged organic donor-acceptor systems.

Research, Oxidation-reduction reaction, Oxidation-reduction reactions, Molecules, Electron donor-acceptor complexes

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Binding of ochratoxin A to human serum albumin stabilized by a protein - ligand ion pair

Article Abstract:

Isothermal calorimetry (ITC) is used to study the binding of ochratoxin (OTA) and its O-methyl derivative (MOA). The calculations of the equilibrium geometry of the monoanion and dianion of OTA reveal only small structural changes among the lowest energy conformers.

Usage, Toxins, Calorimetry, Chemical properties, Methyl groups, Methyl compounds

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Current understanding of the binding sites, capacity, affinity, and biological significance of metals in melanin

Article Abstract:

The study results of the interaction between metals and melanin to determine the nature of metal binding sites, capacity, and affinity is presented.

Infrared spectroscopy, Melanin, Monomers, Properties, Structure, X-ray analysis

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