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Issue 48, 2017
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A new Tb(III)-functionalized layer-like Cd MOF as luminescent probe for high-selectively sensing of Cr3+

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Abstract

A new layer-like metal–organic framework {[Cd4(NDIC)4·5DMF·H2O]DMF}n (NDIC = 5-(5-norbonene-2,3-dicarboximide) isophthalic acid) was synthesized by solvothermal method. It was used as a parent framework to encapsulate Tb3+ cations in Cd-MOF. The obtained composite Tb(3+)@Cd-MOF exhibited excellent luminescence and produced a remarkable quenching effect in the luminescence emission of Tb3+ upon the introduction of Cr3+. Subsequently, Tb(3+)@Cd-MOF was developed as a highly selective and sensitive probe for detection of Cr3+. In particular, the luminescence probe of Cr3+ had a low detection limit (7.5 × 10−8 M), a broad linear range (1 × 10−7–5 × 10−6 M). A paper strip coated with Tb(3+)@Cd-MOF was also shown to be highly selective to Cr3+ under the irradiation of 254 nm UV light of by the naked eyes. This is the first example for detecting metal ions based on a lanthanide functionalized new metal–organic framework (MOF).

Graphical abstract: A new Tb(iii)-functionalized layer-like Cd MOF as luminescent probe for high-selectively sensing of Cr3+

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Publication details

The article was received on 14 Oct 2017, accepted on 15 Nov 2017 and first published on 16 Nov 2017


Article type: Paper
DOI: 10.1039/C7CE01795B
Citation: CrystEngComm, 2017,19, 7270-7276
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    A new Tb(III)-functionalized layer-like Cd MOF as luminescent probe for high-selectively sensing of Cr3+

    Y. Wang, H. Yang, G. Cheng, Y. Wu and S. Lin, CrystEngComm, 2017, 19, 7270
    DOI: 10.1039/C7CE01795B

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