1. Department of Applied Chemistry, Faculty of Science and Engineering; Saga University, Honjo-machi 1; Saga 840-8502 Japan
2. Chemical Research Division; Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi; Dhaka-1205 Bangladesh
3. Department of Chemistry; Memorial University of Newfoundland; St. John's, Newfoundland and Labrador A1B 3X7 Canada
4. Institute of Materials Chemistry and Engineering; Kyushu University, 6-1, Kasugakoen; Kasuga 816-8580 Japan
5. School of Mathematics and Physical Sciences; The University of Hull; Cottingham Road Hull, Yorkshire HU6 7RX UK