Charge-Transfer Molecular Compounds in Biological Systems

Charge migration and charge transfer in molecular systems

The transfer of charge at the molecular level plays a fundamental role in many areas of chemistry, physics, biology and materials science. Today, more than 60 years after the seminal work of R. A. Marcus, charge transfer is still a very active field of research. An important recent impetus comes from the ability to resolve ever faster temporal events, down to the attosecond time scale. Such a h...

Charge Transfer in Molecular Crystals.

Organic Charge Transfer Systems: the Next Step in Molecular Electronics?

Since the 1950s a lot of effort has been devoted into the development of organic conductors. By a substantial degree this has been inspired by W. A. Little’s theoretical analysis of London’s idea that superconductivity might occur in organic macromolecules or polymers [1]. Over time this has resulted in the discovery of several organic metals and superconductors, albeit not with spectacularly h...

Molecular Modelling of Proton Transfer Kinetics in Biological Systems

Long-range proton transfers play an essential role in biological cells, particularly in enzymes and bioenergetic systems. The determination of the threedimensional structure of a number of physiologically important proteins and the impressive advances of simulation techniques have stimulated over about 20 years a number of theoretical studies devoted to biological proton transfers. Simulations ...

Biological charge transfer via flickering resonance.

Biological electron-transfer (ET) reactions are typically described in the framework of coherent two-state electron tunneling or multistep hopping. However, these ET reactions may involve multiple redox cofactors in van der Waals contact with each other and with vibronic broadenings on the same scale as the energy gaps among the species. In this regime, fluctuations of the molecular structures ...