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Modulated Self-assembly of Three Flexible Cr(III) PCPs for SO Adsorption and Detection

Abstract

Modulated self-assembly protocols are used to develop facile, HF-free syntheses of the archetypal flexible PCP, MIL-53(Cr), and novel isoreticular analogues MIL-53(Cr)-Br and MIL-53(Cr)-NO. All three PCPs show good SO uptake (298 K, 1 bar) and high chemical stabilities against dry and wet SO. Solid-state photoluminescence spectroscopy indicates all three PCPs exhibit turn-off sensing of SO, in particular MIL-53(Cr)-Br, which shows a 2.7-fold decrease in emission on exposure to SO at room temperature, indicating potential sensing applications.

Citing Articles

Achieving Sub-ppm Sensitivity in SO Detection with a Chemically Stable Covalent Organic Framework.

Zhao W, Obeso J, Lopez-Cervantes V, Bahri M, Sanchez-Gonzalez E, Amador-Sanchez Y Angew Chem Int Ed Engl. 2024; 64(3):e202415088.

PMID: 39297429 PMC: 11735898. DOI: 10.1002/anie.202415088.

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