Issue 33, 2014

Amino-decorated lanthanide(iii) organic extended frameworks for multi-color luminescence and fluorescence sensing

Abstract

Solvothermal reactions of LnCl3·6H2O (Ln = Eu, Tb, Sm and Dy) with 2-aminoterephthalic acid obtain four isostructural lanthanide(III)–organic frameworks. The structure has the topology of a gadolinium 2-aminoterephthalic acid (MOF-LIC-1). The as-obtained samples were characterized by X-ray diffraction, FT-IR, TGA and luminescence spectroscopy. They all belong to the luminescence materials system with broad band excitation, which could extend to the visible-light region. The selected ligand could effectively sensitize the luminescence of Eu3+, Tb3+ and Sm3+, particularly the Eu3+ ions; thus, leading to the characteristic luminescence of Ln3+. More significantly, the white-light emission may be realized by a single-component Sm(III) framework. Furthermore, Eu-MOF was selected as a representative sample to examine the potential of the material for the sensing of metal ions. It showed highly selective and sensitive luminescence sensing for Al3+ ions. In addition, the luminescence color change can be easily distinguished with the naked eye under UV-light irradiation.

Graphical abstract: Amino-decorated lanthanide(iii) organic extended frameworks for multi-color luminescence and fluorescence sensing

Supplementary files

Article information

Article type
Paper
Submitted
09 May 2014
Accepted
23 Jun 2014
First published
24 Jun 2014

J. Mater. Chem. C, 2014,2, 6758-6764

Author version available

Amino-decorated lanthanide(III) organic extended frameworks for multi-color luminescence and fluorescence sensing

J. Hao and B. Yan, J. Mater. Chem. C, 2014, 2, 6758 DOI: 10.1039/C4TC00962B

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