Mesoporous microparticles based on 3D confined self-assembly of block copolymers

Recently, 3D confined self-assembly (3D-CSA) of block copolymers (BCPs) has emerged as an advanced strategy for the preparation of microparticles with ordered mesostructures owing to the benefits of simplicity and excellent controllability. Notably, significant achievements have been made in mesoporous microparticles through 3D-CSA of BCPs in recent years. Polymeric or polymer-templated inorganic mesoporous microparticles can be generated by utilizing a method combined with adjustment of the assembly process or suitable postprocessing, including physical treatment or chemical modification. Compared with traditional BCP-guided solution self-assembly, 3D-CSA offers distinct benefits in synthesizing novel nanostructures, including anisotropic mesoporous microparticles. In this review paper, we present a thorough overview of the most recent research developments in this field, including synthesis strategies, applications and prospects of BCP mesoporous microparticles and associated BCP-templated inorganic mesoporous microparticles. Particularly, anisotropic mesoporous microparticles will be given special attention.