Meng Jinfang1, Zou Guangtian1, Cui Qiliang1, Li Jiangping1, Wang Xlaohui2, Zhao Muyu2
1State Key Laboratory for Superhard Materials, Jilin University, Changchun, 130023, P.R. China
2Chemistry Department, Jilin University, Changchun, 130023, P.R. China