1. Department
of Chemistry, National Dong Hwa University, No. 1, Section 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
2. Department of Chemistry, National Kaohsiung Normal University, 62 Shen-Shung Road, Kaohsiung 82444, Taiwan
3. Department of Chemistry, Soochow University, No. 70, Lin
Shih Road, Shih-Lin, Taipei 11102, Taiwan