Department of Physics;
College of Sciences;
Shanghai University;
Shanghai 200444;
China;
Department of Chemistry;
College of Sciences;
Shanghai University;
Shanghai 200444;
China;
School of Materials Science and Engineering;
Shanghai University;
Shanghai 200444;
China;
Research Center of Nano Science and Technology;
College of Sciences;
Shanghai University;
Shanghai 200444;
China;
Instrumental Analysis&Research Center;
Shanghai University;
Shanghai 200444;
China;
Institute of Low Temperature and Structure Research;
Polish Academy of Sciences;
50-422 Wroc?aw;
Poland;