Maximizing Porosity and Water Sorption in Covalent Organic Frameworks via β-Ketoenamine Linkages.

ABSTRACT: Controlling the crystallinity and porosity of 2D covalent organic frameworks (2D COFs) is crucial for their applications in science and technology. Herein, the construction of 2D COFs, COF-TP-X, is reported using a multicomponent reaction strategy that introduces β-ketoenamine linkages into isostructural imine-linked COFs. This approach yields materials with exceptional crystallinity, stability, and tunable hydrophilicity. The integration of β-ketoenamine linkages promotes intralayer planarity via NH⋯O hydrogen bonds and enhances π-electronic conjugation within and between layers. By partially substituting (43 mol%) 1,3,5-triformylbenzene with 1,3,5-triformylphloroglucinol, an outstanding gravimetric surface area of 1,984 m² g^-1 and a pore volume of 0.8 cm³

SUBMITTER: AbdulHalim RG 

PROVIDER: S-EPMC12490178 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature