1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China
2. Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
3. Institute of Theoretical Chemistry Faculty of Chemistry University of Vienna Währinger Str. 17 Vienna 1090 Austria