Hybrid microporous polymers from double-decker-shaped silsesquioxane building blocks via Friedel-Crafts reaction

•A new kind of HMPs based on DDSQ was prepared through Friedel-Crafts reaction.•The produced HMPs possess a maximum BET surface area of 923 m2 g−1.•TGA curves demonstrate that the HMPs had a very high thermal stability.•The HPMs have a high gas storage capacity for CO2 and H2.

A series of hybrid microporous polymers (HMPs) were prepared through Friedel-Crafts reaction with double-decker-shaped silsesquioxane as the building block. The ratio between the monomer and the crosslinker has significant influence on the surface area and porous morphology. A maximum BET surface area of 923 m2 g−1 and high gas storage capacity (CO2:10.4 wt%, 273 K/1.0 bar; H2: 0.95 wt%, 77 K/1.0 bar) were achieved. The obtained HMPs have high thermal stability due to the introduction of SiO bonds.

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