An anthracene-based microporous metal–organic framework for adsorbing CO2 and detecting TNP sensitivity. (27th May 2022) - An, Qingbo
Abstract : An anthracene-based microporous MOF of CUST-607 was synthesized by a solvothermal method. CUST-607 possesses a large surface area and shows strong adsorption toward CO2 . In the fluorescence experiments, CUST-607 exhibits total quenching for TNP. Abstract : A new anthracene-based metal–organic framework (MOF, named as CUST-607), [Cd3 (H2 O)(H3 L)2 (dia)2 ]·4DMA·10H2 O (dia = 9, 10-bis(1 H -imidazol-1-yl)anthracene, H3 L = 4, 4′, 4′′-[1, 3, 5-benzenetriyltris(carbonylimino)]tris(benzoate)), was synthesized by a solvothermal method. Through single X-ray diffraction analysis, CUST-607 displays a three-dimensional multihole network with the triclinic space group of P 1̄ and (3, 3, 4, 5)-connected nodes. Gas adsorption and desorption experiments show that CUST-607 has a microporous structure with a large surface area of 702.15 m 2 g −1 . CUST-607 also exhibits selective and strong adsorption of CO2 with a 40 kJ mol −1 Q st value. Luminescence sensing experiments show that CUST-607 has a high selectivity for detecting nitroaromatic explosives, particularly for 2, 4, 6-trinitrophenol. The quenching constant K sv is 1.43 × 10 5 M −1, higher than that of most reported MOFs. In addition, the CUST-607 fluorescence sensor exhibits high recyclability in detecting nitrobenzene and 2, 4, 6-trinitrophenol and can be used as potential sensors in practical applications.