AI Article Synopsis
- - Poor stability is a key challenge for using metal-organic frameworks (MOFs) practically, which makes developing more stable variants essential.
- - Two 3D isomeric Cd-MOFs were synthesized (FJU-35 and FJU-36) with different structural properties due to variations in their additive components, affecting their stability.
- - FJU-35 is less stable and collapses easily but is sensitive to nitrobenzene, while FJU-36 is more stable and effective in separating gas mixtures (CH/CH and CH/CO) post-activation.
Article Abstract
Poor stability has been one of the major difficulties affecting to the practical application of metal-organic frameworks (MOFs). In this work, we obtained two 3D structurally isomeric Cd-MOFs, {[Cd(NHMe)(PTB)(HCOO)(HO)]·(DMF)·(HO)} (FJU-35) and {[Cd(NHMe)(PTB)(HCOO)]·(DMF)·(HO)} (FJU-36) (HPTB = pyridine-2,4,6-tribenzoic acid) containing different Cd-O-Cd chains by varying the addition agents. FJU-35 with coordinated solvent and formate in asymmetric μ-η:η coordination mode within the Cd-O-Cd chains is vulnerable to external attacks and is apt to collapse after activation, while FJU-36 with no coordinated solvent in the Cd-O-Cd chains but fully protected by the carboxylates from the ligands and the symmetric formate in the coordination mode μ-η:η is stable, and its activated sample shows efficient separation of CH/CH and CH/CO mixtures. Conversely, FJU-35 with more vulnerability is more sensitive to the detection of nitrobenzene than FJU-36.
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| http://dx.doi.org/10.1021/acs.inorgchem.8b02212 | DOI Listing |
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