Issue 13, 2016

Highly selective and sensitive fluorescence detection of Zn2+ and Cd2+ ions by using an acridine sensor

Abstract

Fluorescence spectroscopy investigations of the new acridine derivative bis(N,N-dimethylaminemethylene)acridine (3) show remarkable selectivity and sensitivity towards Zn2+ and Cd2+ ions in methanol and for the latter even in water. Through the chelation of the metal ions the present PET effect is quenched, significantly enhancing the emission intensity of the fluorophore. In solution, the bonding situation is studied by fluorescence and NMR spectroscopy, as well as ESI-TOF mass-spectrometry measurements. The solid state environment is investigated by X-ray diffraction and computational calculations. Here, we can show the complexation of the zinc and cadmium ions by the methylene bridged amine receptors as well as by the nitrogen atom of the acridine system.

Graphical abstract: Highly selective and sensitive fluorescence detection of Zn2+ and Cd2+ ions by using an acridine sensor

Supplementary files

Article information

Article type
Paper
Submitted
08 Feb 2016
Accepted
11 Feb 2016
First published
11 Feb 2016
This article is Open Access
Creative Commons BY license

Dalton Trans., 2016,45, 5689-5699

Author version available

Highly selective and sensitive fluorescence detection of Zn2+ and Cd2+ ions by using an acridine sensor

A. Visscher, S. Bachmann, C. Schnegelsberg, T. Teuteberg, R. A. Mata and D. Stalke, Dalton Trans., 2016, 45, 5689 DOI: 10.1039/C6DT00557H

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