A New Fluorescence MOF for Highly Sensitive Detection of Acetylacetone. Issue 5 (1st February 2021)

• Record Type: Journal Article
• Authors: Wang, Y. N.; Wang, S. D.; Chang, X. P.; Li, H. F.; Zhang, J. M.; Xu, L.; Wang, S. Y.
• Is Part Of: ChemistrySelect. Volume 6:Issue 5(2021)
• Page Start: 968
• Page End: 973
• Publication Date: 2021-02-01
• Subjects: Metal-organic framework (MOF) -- Semi-rigid tricarboxylate -- Photoluminescence -- Acetylacetone; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202004531
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A novel metal‐organic framework (MOF) assembled by a semi‐rigid tricarboxylate, namely, 5‐(3, 4‐dicarboxylphenoxy) nicotic acid (H3 L) has been solvothermally synthesized: [Zn3 (L)2 (H2 O)2 ] ⋅ 3H2 O 1 . Single‐crystal X‐ray diffraction analysis indicates that MOF 1 shows 2‐D layer with quadrangle channels along the a axis ( ca . 7.0×8.3 Å 2 ). The 2‐D layer self‐assembles into a final 3‐D supramolecular network via the interlayer π⋯π interactions. The photoluminescence investigations indicate that 1 can selectively and sensitively detect acetylacetone (acac) with high KSV value of 3.597×10 4 M −1 and low limit of detection (LOD) of 50.77 ppb. Further mechanism studies have shown that static photo‐competitive absorption, photoinduced electron transfer and H‐bonding interaction between chemosensor and the analyte may be the primary causes of the fluorescence quenching effect for acac. Abstract : In this paper, A novel metal‐organic framework (MOF) assembled by a semi‐rigid tricarboxylate, namely, has been solvothermally synthesized, which shows 2‐D layer with quadrangle channels along the a axis ( ca . 7.0×8.3 Å 2 ). Photoluminescence investigations indicate that this MOF material can selectively and sensitively detect acetylacetone with high KSV value of 3.597×10 4 M −1 and low limit of detection (LOD) of 50.77 ppb.