1. Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical Nanomaterials Frontier Science Center for Materiobiology and Dynamic Chemistry School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
2. Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai 200237 P. R. China
3. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
4. School of Chemical Engineering East China University of Science and Technology Shanghai 200237 P. R. China