1. Contribution from the Materials and Process Simulation Center (139-74), California Institute of Technology, Pasadena, California 91125, California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1569, Department of Chemistry, Odense University (University of Southern Denmark), Campusvej 55, DK-5230, Odense M, Denmark, and Division of Chemistry and Chemical Engineering (127-72), California...