Articolo in rivista, 2023, ENG, 10.1039/d2me00280a

Solvent-free synthesis of a new perfluorinated MIL-53(Al) with a temperature-induced breathing effect

Morelli Venturi D.; Guiotto V.; D'Amato R.; Calucci L.; Signorile M.; Taddei M.; Crocella V.; Costantino F.

Department of Chemistry, Biology and Biotechnology, Università degli Studi di Perugia, Via Elce di Sotto, Perugia 8,, Italy; Department of Chemistry, NIS and INSTM Centers, Università di Torino, Via G. Quarello 15 and Via P. Giuria 7, Turin, 10125,, Italy; ICCOM-CNR, Via G. Moruzzi 1, Pisa, 56124, Italy; Department of Chemistry and Industrial Chemistry, Università di Pisa, Via Giuseppe Moruzzi 13, Pisa, 56124, Italy

We report on the solvent-free synthesis of the perfluorinated analogue of the well-known breathing metal-organic framework MIL-53(Al), i.e., F4-MIL-53(Al), featuring tetrafluoroterephthalic acid as linker. The crystal structure was solved and refined from powder X-ray diffraction data and confirmed to be isoreticular with MIL-53(Al). As already reported for the MIL-53(Al) analogue, F4-MIL-53(Al) displays a peculiar breathing effect solely induced by the temperature; however, in the latter case the transition occurs with almost no hysteresis and fast kinetics. This unique behavior is reported here for the first time and experimentally demonstrated using differential scanning calorimetry and variable temperature X-ray diffraction.

Molecular systems design & engineering 8 (5), pp. 586–590

Keywords

MOF, tetrafluoroterephthalic acid, differential scanning calorimetry, variable temperature X-ray diffraction

CNR authors

Calucci Lucia

CNR institutes

ICCOM – Istituto di chimica dei composti organo metallici