1. Polymer Research InstituteState Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu 610065 People's Republic of China
2. Chengdu Institute of Organic ChemistryChinese Academy of Sciences Chengdu 610065 People's Republic of China
3. EOR Laboratory, Exploration & Development Research InstituteDaqing Oilfield Limited Company, PetroChina Daqing 163712 People's Republic of China