Porous ionic liquids based on biocompatible CD-MOFs

Abstract

Biocompatible cyclodextrin-based metal–organic frameworks (CD-MOFs) form porous suspensions when dispersed in ionic liquids. We present two porous ionic liquids prepared using different CD-MOFs, which exhibit up to 56% higher carbon dioxide absorption compared to the pure ionic liquid at 303 K. These porous suspensions, when prepared under moisture-free conditions, demonstrate stability for several weeks provided smaller CD-MOF crystals are used. The suspension structure was characterized using X-ray scattering, while light scattering measurements were employed to monitor their stability over time.