Affiliation: | 1. Department of Chemistry and The Center for Electron Transport in Molecular Nanostructures, Columbia University, New York, NY 10027, USA, Fax: (+1)?212‐932‐1289;2. Department of Applied Physics/Applied Mathematics and The Center for Electron Transport in Molecular Nanostructures, Columbia University, New York, NY 10027, USA, Fax: (+1) 212‐854‐1909 http://nuckolls.chem.columbia.edu |