1. Department of Chemistry; National Dong Hwa University; No. 1, Sec. 2, Da Hsueh Rd. Shoufeng Hualien 97401 Taiwan R.O.C.
2. UMR-CNRS, 6226 “; Institut des Sciences Chimiques de Rennes”; University de Rennes 1; 35042 Rennes Cedex France
3. Institute of Chemistry; Academica Sinica; Taipei 115 Taiwan R.O.C.