1. State
Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin), School
of Materials Science and Engineering, Nankai University, Tianjin 300071, China
2. Key
Laboratory of Functional Polymer Materials and the Centre of Nanoscale
Science and Technology, Institute of Polymer Chemistry, College of
Chemistry, Nankai University, Tianjin 300071, China
3. Department
of Physics and Astronomy, Shanghai Jiaotong University, Shanghai 200240, China
4. Polymer
Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003, United States