For most synthetic organic materials,low surface energy and inertness in reactivity seriously offset their priority as flexible,easy processed and low cost materials.In order to overcome these two problems,the development of new chemistries on synthetic organic surface is crucial.With this motivation,our lab has developed a series of new photo-induced surface C-H transformation reactions/graft polymerizations to optimize the surface performance of synthetic organic materials.Based on the set of reactions,the C-H bonds of the outmost-surface of a polymeric matrix could be multiple decorated as: 1)introducing polar/reactive groups including OH,NH2,SH,epoxy,saccharide etc; 2)introducing polymer brushes; and 2/3D nano/micro-structures by surface controlled/living polymerization.These innovative reactions and grafting polymerizations not only enrich photochemical field but also derive in a series of new advanced technologies in separation,composite materials,optical/electric devices,bio-purposes.