1. Department
of Chemistry, National Taiwan University, Taipei, Taiwan
2. Department
of Chemistry, National Chung-Hsing University, Taichung, Taiwan
3. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
4. Graduate
School of Science, Department of Chemistry, Osaka University, Osaka, Japan
5. Dipartimento
di Chimica, Biologia e Biotecnologie, Università di Perugia, Perugia, Italy
6. Scuola Normale Superiore, Pisa, Italy
7. Consiglio
Nazionale delle Ricerche, Istituto di Struttura della Materia, 00016 Roma, Italy
8. Insituto
de Fìsica, Universidade Federal da Bahia, Salvador, Brazil