Room-temperature synthesis of a fluorine-functionalized nanoporous organic polymer for efficient SF6 separation

Abstract

Addressing the environmental impact of SF₆, we synthesized a fluorine-functionalized triphenylamine-based nanoporous organic polymer, ANOP-8, at room temperature using N,N,N′,N′-tetraphenylbenzidine and 2,3,4,5,6-pentafluorobenzaldehyde. ANOP-8, which incorporates 14.86% fluorine, has a BET surface area of 694 m² g⁻¹ and a robust C–C structure. It achieves SF₆/N₂ selectivities of 65 and 51 at 298 K and 1 bar through ideal adsorbed and breakthrough experiments, respectively. Molecular simulations have revealed the adsorption mechanisms, underscoring the potential of fluorinated polymers in developing future adsorbents for toxic gases.