a
Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
E-mail: konopka@mail.ncku.edu.tw
;
Fax: +886-62740552
;
Tel: +886-62757575-65336
b
Department of Chemistry, National Taiwan University, Taipei 116, Taiwan
c
Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan