1. Research Center for Analytical Sciences
2. College of Chemistry
3. Nankai University
4. Tianjin 300071
5. China
6. Laboratoire International Associé CNRS and University of Illinois at Urbana–Champaign
7. Vandœuvre–lès–Nancy F-54506
8. France
9. Theoretical and Computational Biophysics Group
10. Beckman Institute for Advanced Science and Technology
11. Université de Lorraine and CNRS. LPCT UMR 7019 F-54000 Nancy