Affiliation: | 1. Institute of Atomic and Molecular Sciences, Academia Sinica, PO Box 23‐166, Taipei 10617 (Taiwan), Fax: (+886)?2‐23620200;2. Department of Chemistry, National Taiwan University, Taipei 10617 (Taiwan);3. Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010 (Taiwan) |