Redefining the Robeson upper bounds for CO2/CH4 and CO2/N2 separations using a series of ultrapermeable benzotriptycene-based polymers of intrinsic microporosity

Ultrapermeable benzotriptycene-based PIMs show exceptional gas selectivities that define new positions for the CO₂/CH₄ and CO₂/N₂ Robeson upper bounds.