1. State Key Laboratory of Polymer Materials EngineeringCollege of Polymer Science and EngineeringSichuan University No. 24 South Section 1, Yihuan Road Chengdu Sichuan 610065 P. R. China
2. College of ChemistrySichuan University Chengdu Sichuan 610064 P. R. China
3. State Key Lab of Fluorinated Functional Membrane MaterialsDongyue Polymer Material Company of Dongyue Federation Zibo Shandong 256401 P. R. China