March 23th, Prof. Yongsheng Chen from Nankai university, Prof. Jianzhong Du from Tongji University and Prof. Haibo Yang from East China Normal University visited our group and gave lectures titled "graphene and carbon nano tube : fbrication /properties and functions" "Toward Smart and Functional Polymer Vesicles by Self-Assembly""Molecular Architecture via Coordination-Driven Self-Assembly",respectively.