Affiliation: | 1. Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA;2. Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China;3. Department of Macromolecular Science, Fudan University, Shanghai, 200433, P. R. China;4. Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA |