(Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China）
The self-assembly behavior and optical absorption property of the blending system involving AB diblock copolymers and nanoparticles were studied by combining dissipative particle dynamics and finitedifference timedomain method. The effects of the interaction parameters between nanoparticles and segments, the size of nanoparticles and the structures of copolymers on the distribution of nanoparticles and optical absorption of hybrid nanostructures were investigated. It was found that AB diblock copolymers/nanoparticles blends can selfassemble into lamellar hybrid nanostructures, varying the interaction parameters and the size of nanoparticles can regulate the distribution of nanoparticles at the interface between A and B phase or at B phase. Besides, the architecture of copolymers can also affect the distribution of nanoparticles in B phase. There is a remarkable difference in the optical absorption performance when the distribution of nanoparticles in hybrid nanostructures has been changed. In the visible range, the optical absorption of the hybrid nanostructures in which the nanoparticles were concentrated in the B phase is higher than that in which the nanoparticles distributed at the interface between A and B phase. The optical absorption of the former hybrid nanostructure is higher than that of the latter one by 75%. The optical absorption can be adjusted by controlling the nanoparticle distribution in hybrid nanostructures. This work would provide guidance for designing advanced hybrid materials with excellent optical absorption performance.