1. Department of Chemistry, National Tsing Hua University, Kuang Fu Road, Hsinchu, Taiwan 30013, Republic of China
2. Department of Applied Chemistry, National Chiayi University, No. 300 Syuefu Rd., Chiayi, Taiwan 60004, Republic of China
3. Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, Republic of China
4. School of Chemistry and Chemical Engineering, Xi’an Shiyou University, No. 18 Second Dianzi Road, Xi’an, Shaanxi Province, People's Republic of China 710065