1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
2. Guizhou University
3. Guiyang 550025
4. China
5. College of Chemical and Environmental Engineering
6. Shandong University of Science and Technology
7. Qingdao 266590
8. P. R. China
9. Institute of Chemical Sciences
10. School of Engineering and Physical Sciences
11. Heriot-Watt University
12. Edinburgh EH14 4AS
13. UK
14. Department of Chemistry and Biochemistry
15. University of Hull
16. Hull HU6 7RX