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Issue 4, 2018
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Highly selective luminescence sensing for the detection of nitrobenzene and Fe3+ by new Cd(II)-based MOFs

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Abstract

Herein, three new luminescent metal–organic frameworks (MOFs), namely {[Cd4(H3L)4(H2O)12]·2.5H2O}n (1), {[Cd(L)]·2.5H2O·3[H2N(Me)2]}n (2), and {[Cd2(L)(DMA)]·[H2N(Me)2]}n (3), were designed and successfully prepared via a solvothermal reaction using V-shaped rigid multicarboxylate 2,4-di(3′,5′-dicarboxylphenyl)benzoic acid (H5L) and Cd(II) salts in various solvent systems. The structural analyses indicated that the H3L2−/L5− ligands took three different coordination fashions in 1–3; this resulted in a diversity of targeted MOFs. The solid-state luminescence properties of three MOFs were studied under ultraviolet light irradiation at ambient temperature, and 3 showed a high selectivity and sensitivity for nitrobenzene and Fe3+ because of the quenching effect. Thus, it could be a potential crystalline material for detecting these substances. The mechanisms of the quenching effect and sensing properties of 3 have been discussed in detail.

Graphical abstract: Highly selective luminescence sensing for the detection of nitrobenzene and Fe3+ by new Cd(ii)-based MOFs

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Publication details

The article was received on 05 Nov 2017, accepted on 10 Dec 2017 and first published on 04 Jan 2018


Article type: Paper
DOI: 10.1039/C7CE01920C
Citation: CrystEngComm, 2018,20, 477-486
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    Highly selective luminescence sensing for the detection of nitrobenzene and Fe3+ by new Cd(II)-based MOFs

    Y. Yan, J. Liu, G. Yang, F. Zhang, Y. Fan, W. Zhang and Y. Wang, CrystEngComm, 2018, 20, 477
    DOI: 10.1039/C7CE01920C

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