Fig. 3: Gas sorption properties of MHPs.

a N2 adsorption and desorption isotherms of MHP (red, SBET = 320 m2/g, MHP-Cl (blue, SBET = 289 m2/g), MHP-Br (orange, SBET = 208 m2/g), and MHP-P5Q (green, SBET = 296 m2/g); b N2 adsorption and desorption isotherms of MHP-P5Q at 77 K (inserted: corresponding pore size distribution from the NLDFT approximation). Solid symbol: adsorption; open symbol: desorption. SBET denotes BET surface areas. CO2 adsorption isotherms of MHP, MHP-Cl, MHP-Br, and MHP-P5Q at c 273 K and d 298 K.