Covalent Organic Frameworks

Abstract

Two-dimensional covalent organic frameworks (2D COFs) are emerging crystalline 2D organic material comprising planar and covalent networks with long-ranging structural order. Benefiting from their intrinsic porosity, crystallinity, and electrical properties, 2D COFs have displayed great potential for separation, energy conversion, and electronic fields. For the most of these applications, large-area and highly-ordered 2D COFs thin films are required. As such, considerable efforts have been devoted to exploring the fabrication of 2D COF thin films with controllable architectures and properties. In this chapter, we aim to provide the recent advances in the fabrication of 2D COF thin films and highlight the advantages and limitations of different methods focusing on chemical bonding, morphology, and crystal structure.

In Situ Construction of Covalent Organic Framework Membranes on Polyacrylonitrile Nanofibers for Carbon Dioxide Capture

“…Covalent organic framework (COF), which materials have emerged as a promising class of ordered porous materials with adjustable pore sizes, demonstrate promising prospects in the field of carbon dioxide adsorption owing to their exceptional specific surface area. − Typically, solvothermal reactions are employed for the synthesis of the majority of COFs. These reactions necessitate stringent reaction conditions such as elevated temperature and pressure, inert atmospheres, and sealed containers. − Furthermore, the limitations of the application of COFs are primarily concentrated in its powdered state.…”