A carbosilane dendrimer based macrophotoinitiator（MPI-185） containing benzophenone moiety terminal groups was synthesized by a divergent hydrosilylation/allylation reaction sequence followed by alcoholysis of the silicon chloride end groups.The structure of MPI-185 was characterized by FTIR,（）1H-NMR,（）13C-NMR,and（）29Si-NMR,and its intrinsic viscosity,molecular weight and polydispersity were meassured on by using a GPC complex system.Its reactivity was tested via curing a sensitive epoxy acrylate（EA） resin using FTIR,and the thermal property of films cured was measured by TGA.The results were compared with those of a small molecule photoinitiator（185）.It was found that the curring efficiency of macrophoinitiator（MPI-185） was satisfactory,and the thermal degradation temperature of EA resin cured with MPI-185 was also markedly improved.
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