1. Department of Chemistry and Center for Nanoscience & Nanotechnology; National Sun Yat-sen University; 70 Lien-Hai Road, Kaohsiung Taiwan 80424 Republic of China), Fax: (886)-7-525-3909
2. Institute of Biomedical Sciences; Academia Sinica; Taipei (Taiwan) 115 Republic of China
3. Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces; Xiamen University; 422 Siming South Road Xiamen 361005 P.R. China
4. School of Science; Jimei University; 183 Yinjiang Road Xiamen 361021 P.R. China