1. Department of Chemistry and NanoscienceEwha Womans University Seoul 03760 Korea
2. State Key Laboratory of Fine ChemicalsDalian University of Technology 2 Linggong Road Dalian 116024 P. R. China
3. School of Pharmaceutical Science and TechnologyDalian University of Technology 2 Linggong Road Dalian 116024 P. R. China
4. Research Institute of Dalian University of Technology in Shenzhen Gaoxin South fourth Road Shenzhen 518057 P. R. China
5. School of Life Science and BiotechnologyDalian University of Technology 2 Linggong Road Dalian 116024 P. R. China