A low-temperature synthesis-induced defect formation strategy for stable hierarchical porous metal–organic frameworks

Publication date: Available online 13 April 2019Source: Chinese Chemical LettersAuthor(s): Ge Huang, Yue Wang, Tianfu LiuAbstractA stable hierarchical porous metal–organic framework PCN-56 with abundant Lewis acid sites (denoted as Defective-PCN-56) was synthesized by the low-temperature synthesis-induced defect formation method. The existence of mesopore in structure was confirmed by N2 sorption isotherm and the successful encapsulation of large dye molecules. The Defective-PCN-56 has higher loading capacity toward anti-cancer drug Doxo compared with that of “nearly ideal-crystal” (denoted as Ideal-PCN-56) synthesized at high temperature, showing potential application as drug carrier. The low-temperature synthesis-induced defect formation strategy presented here provides a new and facile way to synthesize stable MOFs with the combination of intrinsic micropore and additional mesopore as well as abundant Lewis acid sites.Graphical AbstractA stable hierarchical porous metal–organic framework PCN-56 with abundant Lewis acid sites was synthesized by the low-temperature synthesis-induced defect formation method. It exhibits good adsorption capacity for dyes and high loading capacity toward macromolecular drugs.
Source: Chinese Chemical Letters - Category: Chemistry Source Type: research