1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
2. School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K.
3. Department of Chemistry, Hochschule Zittau/Görlitz (University of Applied Science), Theodor-Körner-Allee
16, D-02763 Zittau, Germany