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Issue 29, 2015
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Four super water-stable lanthanide–organic frameworks with active uncoordinated carboxylic and pyridyl groups for selective luminescence sensing of Fe3+

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Abstract

Four super water-stable isostructural lanthanide–organic frameworks, [Ln(HL)(H2O)2]n·2H2O (1-Ln) (Ln = Eu, Tb, Nd and Sm), have been successfully synthesized under hydrothermal conditions with 3,5-di(2,4-dicarboxylphenyl)pyridine (H4L) and Ln(NO3)3·6H2O. 1-Ln shows a novel 2D layered structure with uncoordinated carboxylic and pyridyl groups pointing to the interior of interlayer channels. The luminescent properties of 1-Eu in the solid state and one steeped in aqueous solution have been measured, which show excellent luminescence and good luminescent stability in water. Next 1-Eu was chosen as a probe for sensing different metal ions. Consequently, 1-Eu exhibits a highly selective response to Fe3+ through the luminescence quenching effect in aqueous solutions. The probable mechanisms of the quenching effects have been investigated in detail.

Graphical abstract: Four super water-stable lanthanide–organic frameworks with active uncoordinated carboxylic and pyridyl groups for selective luminescence sensing of Fe3+

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Publication details

The article was received on 15 Apr 2015, accepted on 29 May 2015 and first published on 01 Jun 2015


Article type: Paper
DOI: 10.1039/C5DT01421B
Citation: Dalton Trans., 2015,44, 13325-13330
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    Four super water-stable lanthanide–organic frameworks with active uncoordinated carboxylic and pyridyl groups for selective luminescence sensing of Fe3+

    Y. Liang, G. Yang, B. Liu, Y. Yan, Z. Xi and Y. Wang, Dalton Trans., 2015, 44, 13325
    DOI: 10.1039/C5DT01421B

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