1. School
of Life Science, Chongqing University, Shapingba District, Chongqing 401331, People’s Republic of China
2. Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
3. School
of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore