Crystalline Covalent Organic Frameworks with Hydrazone Linkages
Fernando J. Uribe‐Romo, Christian J. Doonan, Hiroyasu Furukawa, Kounosuke Oisaki, Omar M. Yaghi
Abstract
Condensation of 2,5-diethoxyterephthalohydrazide with 1,3,5-triformylbenzene or 1,3,5-tris(4-formylphenyl)benzene yields two new covalent organic frameworks, COF-42 and COF-43, in which the organic building units are linked through hydrazone bonds to form extended two-dimensional porous frameworks. Both materials are highly crystalline, display excellent chemical and thermal stability, and are permanently porous. These new COFs expand the scope of possibilities for this emerging class of porous materials.
Topics & Concepts
HydrazoneChemistryCovalent bondCovalent organic frameworkBenzenePorosityThermal stabilityScope (computer science)Porous mediumChemical engineeringOrganic chemistryPolymer chemistryProgramming languageComputer scienceEngineeringCovalent Organic Framework ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsLuminescence and Fluorescent Materials