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Issue 33, 2012
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A layer-structured Eu-MOF as a highly selective fluorescent probe for Fe3+ detection through a cation-exchange approach

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Abstract

A new series of lanthanide metal–organic frameworks, LnL (Ln = La, Y, Eu, Tb, and Gd), were prepared under hydrothermal conditions. The five compounds are all isostructural as confirmed by the analyses of single crystal and powder X-ray diffractions. The compounds exhibit layer-like structures with the [H2NMe2]+ cations being located in the interlayer channels, which can be easily replaced by a number of metal ions. Most interestingly, compound EuL performs as a rare example of a highly selective and sensitive luminescence sensor for Fe3+ ions based on total quenching of the Eu-luminescence via cation-exchange. The possible sensing mechanism was further explored in detail. Remarkably, it is the first Eu-MOF luminescent material to exhibit an excellent ability for the detection of Fe3+ ions in a biological system.

Graphical abstract: A layer-structured Eu-MOF as a highly selective fluorescent probe for Fe3+ detection through a cation-exchange approach

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Publication details

The article was received on 27 Apr 2012, accepted on 25 Jun 2012 and first published on 26 Jun 2012


Article type: Paper
DOI: 10.1039/C2JM32661B
Citation: J. Mater. Chem., 2012,22, 16920-16926
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    A layer-structured Eu-MOF as a highly selective fluorescent probe for Fe3+ detection through a cation-exchange approach

    S. Dang, E. Ma, Z. Sun and H. Zhang, J. Mater. Chem., 2012, 22, 16920
    DOI: 10.1039/C2JM32661B

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