1. Department of Applied Chemistry; Faculty of Science and Engineering; Saga University; Honjo-machi 1 Saga 840-8502 Japan
2. Department Key Laboratory of Macrocyclic and; Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang Guizhou 550025 P.R. China
3. Chemistry Department; Loughborough University; Loughborough Leicestershire LE11 3TU UK
4. Department of Chemistry; The University of Hull; Cottingham Road Hull Yorkshire HU6 7RX UK