1. Department of Chemistry
2. National Taiwan University
3. Taipei 10617
4. Taiwan
5. Università di Perugia
6. Dipartimento di Chimica
7. Biologia e Biotecnologie
8. 06123 Perugia
9. Italy
10. National Chung-Hsing University
11. Taichung 402
12. Institute of Atomic and Molecular Sciences
13. Institute of Scientific and Industrial Research
14. Graduate School of Science
15. Osaka University
16. Toyonaka, Osaka 560-0043
17. Japan