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.