1. State Key Laboratory of Fine
Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
2. Department
of Physics, Peking University, 209 Chengfu Road, Beijing 100871, P. R. China
3. School
of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin 124221, P. R. China
4. Graduate
School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka, 808-0196, Japan