New study on the rules of sub-nano level structures of ordered mesoporous polymers by using positron annihilation lifetime spectroscopy

摘要

We report here a high temperature directed, self-assembly to the synthesis of ordered mesoporous organic polymers (OMPs) with different nanopore sizes and BET surface areas. The synthesized OMPs have large BET surface areas (219-512 m(2)/g), ordered mesopores, and adjustable pore volumes (0.20-0.48 cm(3)/g). Their rules of sub-nano level structures such as free volumes, unopened nanopores and electronic environment in the synthesized OMP materials were systematically investigated by using positron annihilation lifetime spectroscopy, which acts as an important technique for investigating microstructures of ordered mesoporous organic polymers and optimization of synthetic conditions of porous organic polymers.