[Display omitted] This review introduces important research progress of covalent organic frameworks (COFs) and their applications in the field of gas storage and separation, catalysis, optoelectronics, sensing, small molecules adsorption, and drug delivery. Additionally, the challenges and development directions of such materials are discussed. Covalent organic frameworks (COFs) are an emerging class of porous covalent organic structures whose backbones were composed of light elements (B, C, N, O, Si) and linked by robust covalent bonds to endow such material with desirable properties, i.e., inherent porosity, well-defined pore aperture, ordered channel structure, large surface area, high stability, and multi-dimension. As expected, the abovementioned properties of COFs broaden the applications of this class of materials in various fields such as gas storage and separation, catalysis, optoelectronics, sensing, small molecules adsorption, and drug delivery. In this review, we outlined the synthesis of COFs and highlighted their applications ranging from the initial gas storage and separation to drug delivery.

Chinese chemical letters

Covalent organic frameworks; Drug delivery; Synthesis; Porous materials; Drug delivery devices; Covalent modifications; Research; Chemical properties; Methods; Chemical research; Organic compounds; Covalent organic frameworks; Drug delivery; Synthesis; Porous materials

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