1. Department of Chemistry, University of Texas-Pan American, Edinburg, Texas 78541-2999, Department of Materials Science & Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China, Key Laboratory of Excited-State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, China Academy of Science, Changchun 130021, People's Republic of China, and Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University,...