1. Laboratoire d'Electrochimie Organique et de Photochimie Redox, UMR CNRS 5630, Institut de Chimie Moléculaire de Grenoble, FR CNRS 2607, Université Joseph Fourier Grenoble I, BP 53, 38041 Grenoble, Cedex 9, France, Department of Biotechnology Engineering, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer-Sheva, Israel, and The National Institute for Biotechnology in the Negev, and the Ilse Katz Center for Meso- and Nanoscale Science and Technology, P.0. Box 653, 84105 Beer-Sheva, Israel