1. Department
of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
2. Department
of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
3. College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
4. School
of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, 923-1292 Ishikawa, Japan