1. Department of Chemistry, Department of Mechanical Engineering and Materials Science, and The Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005, United States, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401, United States, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China, and W. M. Keck Laboratory, California Institute of Technology, 138-78,...