Molecular and biomolecular optoelectronics

Reversible electronic transduction of photonic processes occurring on elect rodes is the conceptual method to develop molecular and biomolecular optoel ectronic systems. Cyclic photochemical activation of molecular or biomolecu lar monolayer redox-functions provides a general methodology for the ampero metric transduction of photonic information that is recorded by the chemica l assembly. Alternatively, photoisomerizable monolayers associated with ele ctrodes act as "command interfaces" for controlling the interfacial electro n transfer between molecular redox-species or redox-proteins. The systems u se a photon ic input for the generation of an electronic output and act as information processing assemblies. Programmed arrays of photosensirizer/ele ctron acceptor cross-linked Au-nanoparticle arrays are assembled on indium tin oxide (ITO) for photoelectrochemical applications.