A luminescent lanthanide complex-based anion sensor with electron-donating methoxy groups for monitoring multiple anions in environmental and biological processes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)387-394
Journal / PublicationSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume96
Online published2 Jun 2012
Publication statusPublished - Oct 2012
Externally publishedYes

Abstract

We designed a ternary europium (III) tris(2-thenoyltrifluoroacetonate) with 2-(3,4,5-trimethoxyphenyl)imidazo[4,5-f]-1,10-phenanthroline (1) ligands for the luminescent detection of various anions, such as fluoride, acetate and dihydrogen phosphate. Characterization of the sensor's photophysical properties and via NMR showed that the sensor exhibits striking emission changes to fluoride (purple), acetate (green) and dihydrogen phosphate (blue) anions, respectively. Its fluorescence lifetime was determined to be 1.10 ms for europium ions and the complex showed an overall quantum yield of 10% in DMSO.

Furthermore, transparent hybrid thick films composed of the europium complex and poly-methyl methacrylate matrix were successfully prepared via copolymerization. The resulting film overall displayed intense red emissions associated with europium ions. Fluorescence microscopic evaluation showed a homogenous distribution of aggregates with average diameters of 30-50 μm throughout the film. The accordingly produced film could give rise to a luminescence change to purple in response to fluoride anions. © 2012 Elsevier B.V. All rights reserved.

Research Area(s)

  • Acetate, Anion, Dihydrogen phosphate, Europium, Fluoride, Lanthanide, Luminescence, Polymer films, Polymethyl methacrylate, Sensor

Citation Format(s)

A luminescent lanthanide complex-based anion sensor with electron-donating methoxy groups for monitoring multiple anions in environmental and biological processes. / Zheng, Yuhui; Tan, Chaoliang; Drummen, Gregor P.C.; Wang, Qianming.

In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, Vol. 96, 10.2012, p. 387-394.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal