Our research group has long been engaging in the study of molecular materials and devices. We insist on the development of designing high performance molecular materials, new method towards performance manipulation, and the synthesis of novel π- conjugated materials with excellent photoelectric properties. We are also interested in the growth of high quality monocrystalline graphene, the preparation of nitrogen-doped graphene, and the regulation on their electric properties as well as new approaches to directly prepare graphene on dielectric layer. To realize the multi-functional devices, the influences of interfaces on the device properties are studied as well.