1. Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People’s Republic of China
2. Department
of Chemistry, Iowa State University, 2101d Hach Hall, Ames, Iowa 50011, United States
3. Department
of Chemistry, Shantou University, Guangdong 515063, P. R. China
4. Department
of Chemistry and Key Laboratory for Preparation and Application of
Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, P. R. China