1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua 321004, P.R. China
2. IBM Thomas J. Watson Research, Yorktown Heights, New York 10598, United States
3. Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, Jinhua 321004, China
4. Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P.R. China