Affiliation: | a Department of Chemistry, The Key Lab of Biological Chemistry and Organic Chemistry of Henan Province, Zhengzhou University, Daxue road 75, Zhengzhou 450052, China b The Key Lab of Advanced Information Nano-materials of Zhengzhou, Daxue road 75, Zhengzhou 450052, China c Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Aobaku, 2-1-1, Katahira, Sendai, Japan |