Yan Guo,a Chenhe Wu,a Nian-Wu Li,b Shuai Yuancd and Le Yu*b
a College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
b Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
c Shanghai University (Zhejiang Jiaxing) Emerging Industries Institute, Building 16, No. 906 Yatai Road, Nanhu District, Zhejiang, P. R. China
d Research Center of Nanoscience and Nanotechnology, Shanghai University, Shanghai 200444, P. R. China