[1
]Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New
Jersey 07102, United States
[2
]Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory
of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical
Engineering, Beijing Institute of Technology, Beijing 102400, P. R. China
[3
]School of Medical Technology, Beijing Institute of Technology, Beijing 102400, P.
R. China