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Issue 7, 2014
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Two luminescent metal–organic frameworks for the sensing of nitroaromatic explosives and DNA strands

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Abstract

With a flexible aromatic ligand, bis-(3,5-dicarboxy-phenyl)terephthalamide (H4L), two metal–organic frameworks, Cd(L)·(HDMA)2(DMF)(H2O)3 (1) and Zn(L)·(HDMA)2(DMF)(H2O)6 (2), were synthesized using a solvothermal method. Both 1 and 2 possess a 3D open framework. These two compounds exhibit strong photoluminescence in suspensions, and their luminescence could be efficiently and selectively quenched by a series of nitroaromatics. Thus, 1 and 2 could be used as excellent luminescent probes for nitroaromatic explosives. Additionally, 1 and 2 could also be utilized as the sensing platforms for DNA strands, which is attributed to their different affinities for single- and double-stranded DNAs. With this method, 0.05 nM of target DNA could be detected, and the selectivity could be down to a single nucleotide mismatch. This work shows the potential of MOFs for the sensing of versatile chemicals.

Graphical abstract: Two luminescent metal–organic frameworks for the sensing of nitroaromatic explosives and DNA strands

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Publication details

The article was received on 18 Oct 2013, accepted on 26 Nov 2013 and first published on 28 Nov 2013


Article type: Paper
DOI: 10.1039/C3TA14199C
Citation: J. Mater. Chem. A, 2014,2, 2213-2220
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    Two luminescent metal–organic frameworks for the sensing of nitroaromatic explosives and DNA strands

    G. Wang, C. Song, D. Kong, W. Ruan, Z. Chang and Y. Li, J. Mater. Chem. A, 2014, 2, 2213
    DOI: 10.1039/C3TA14199C

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