1. Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
2. Department
of Chemistry, The Hashemite University, P.O. Box 330117, Zarqa, 13133, Jordan
3. Beijing
Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials,
School of Chemistry, Beijing Institute of Technology, Beijing 1000081, P. R. China