Novel Catalysis Systems for the Synthesis of Covalent Organic Frameworks

Abstract

Covalent organic frameworks (COFs), an emerging class of crystalline polymers, are meticulously constructed through covalent bonds, resulting in well‐defined structures and crystalline characteristics. Precise control over their architecture, permeability, and functionality can be easily achieved simply via selection of precursor monomers. The tailored architecture and functionality make COFs versatile for various applications including gas storage, pollutant removal, catalysis, and energy storage. Efficient synthesis of COFs with high crystallinity and high yield significantly improves their performance. However, conventional synthetic methods often involve complex setups and costs. Innovations in catalysis have emerged as solutions, including refined activation procedures, novel catalysts, and alternative synthesis conditions. This review comprehensively explores current catalysis systems for COF synthesis, detailing catalysts for various linkages, elucidating mechanisms, and addressing challenges. Future directions and extensions of COF synthesis and applications are also highlighted.

A General Synthesis Method for Covalent Organic Framework and Inorganic 2D Materials Hybrids

“…Recent research has demonstrated that Lewis acids can effectively catalyze the synthesis of imine COFs with high crystallinity. − By leveraging the analogous Lewis acidity found in 2D inorganic materials like hBN and TMDs, we postulated that these materials could function as both catalysts and inorganic building blocks for creating COF/inorganic hybrids, enabling the controlled growth of COFs on the surface of such 2D materials. Herein, we present a general synthetic method for a series of COF/inorganic 2D material hybrids, catalyzed by various inorganic 2D materials, including hBN, molybdenum disulfide (MoS 2 ), molybdenum diselenide (MoSe 2 ), and tungsten disulfide (WS 2 ).…”