Room-Temperature Synthesis of a Fluorine-Rich Nanoporous Organic Polymer with Hierarchical Porosity for Selective Separation of Fluorinated Greenhouse Gases

Abstract

Developing sustainable adsorbents for capturing fluorinated greenhouse gases is critical yet challenging. Herein, we report the room-temperature, superacid-catalyzed synthesis of a fluorine-rich nanoporous polymer, CNOP-13, featuring hierarchical porosity and high fluorine content (18 wt%). CNOP-13 exhibits a high SF6/N2 selectivity of 92.2. DFT calculations reveal that superior performance stems from "electrostatic traps" formed between electron-deficient pentafluorophenyl rings and electron-rich carbazole moieties. This work provides a facile, energy-efficient strategy for designing high-performance materials to capture SF6 and CF4.