1. College of Chemistry Nankai University Tianjin 300071 P. R. China
2. College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 Shanxi P. R. China
3. Department of Chemistry University of South Florida 4202 East Fowler Avenue, CHE205 Tampa FL 33620-5250 USA
4. Department of Chemistry Hebei Normal University of Science and Technology Qinhuangdao 066004 Hebei China
5. Van't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
6. State Key Laboratory of Medicinal Chemical Biology Nankai University Tianjin 300071 P. R. China
7. Department of Chemical Sciences Bernal Institute University of Limerick Limerick V94T9PX Republic of Ireland
8. Department of Chemistry University of Texas at San Antonio One UTSA Circle San Antonio TX 78249-0698 USA
9. Key Laboratory of Advanced Energy Materials Chemistry (MOE) Nankai University Tianjin 300071 P. R. China