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Issue 19, 2015
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Heterometal–organic frameworks as highly sensitive and highly selective luminescent probes to detect I ions in aqueous solutions

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Abstract

Two cationic heterometal–organic frameworks (Eu-Zn (1·NO3) and Tb-Zn (2·NO3)) with NO3 counter-anions in the channels are structurally and luminously characterized. Both of them can serve as highly sensitive and highly selective luminescent probes for detecting I ions in aqueous solutions. In particular, 2·NO3 can selectively and reversibly detect I with a fast response time of just 10 s and an extremely low detection limit of 0.001 ppm. Mechanism studies reveal that I is quickly oxidized to form I3 with the help of 1·NO3 or 2·NO3, leading to luminescence quenching. This represents the first report of MOF-based luminescent probes for the detection of I in aqueous solutions.

Graphical abstract: Heterometal–organic frameworks as highly sensitive and highly selective luminescent probes to detect I− ions in aqueous solutions

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The article was received on 14 Nov 2014, accepted on 05 Jan 2015 and first published on 08 Jan 2015


Article type: Communication
DOI: 10.1039/C4CC09081K
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Citation: Chem. Commun., 2015,51, 3985-3988
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    Heterometal–organic frameworks as highly sensitive and highly selective luminescent probes to detect I ions in aqueous solutions

    P. Shi, H. Hu, Z. Zhang, G. Xiong and B. Zhao, Chem. Commun., 2015, 51, 3985
    DOI: 10.1039/C4CC09081K

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