Issue 27-28, 2005
From the journal:

Journal of Materials Chemistry

Cation modulation of carbonyldipyrrinone (CDP) fluorescence: emission-ratiometric sensing of calcium†

Ali Coskun,a   Erhan Deniza  and  Engin U. Akkaya*a  

* Corresponding authors

a Middle East Technical University, Department of Chemistry, Ankara, TR-06531, Turkey
E-mail: akkayaeu@metu.edu.tr
Fax: 90-312-210-1280
Tel: 90-312-210-5126

Abstract

Optically dilute solutions of 2,3,7,8-tetraethyl-N,N′-carbonyldipyrrinone displays an absorbance peak at 401 nm and an emission peak at 493 nm in acetonitrile. The two carbonyl groups in the structure seems to be optimally placed for cation coordination, and when calcium ions are added in the form of a perchlorate salt, a remarkable bathochromic change in the absorption and emission spectrum takes place: the absorption peak shifts by 24 nm and the emission peak shifts by 49 nm towards the red end of the visible spectrum. The shift in the emission spectrum allows wavelength ratiometric assessment of calcium concentration. In addition, the response is highly selective with respect to the cations added.

Graphical abstract: Cation modulation of carbonyldipyrrinone (CDP) fluorescence: emission-ratiometric sensing of calcium

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Article information

DOI
https://doi.org/10.1039/B501606A
Article type
Paper
Submitted
01 Feb 2005
Accepted
29 Mar 2005
First published
08 Apr 2005

J. Mater. Chem., 2005,15, 2908-2912

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Cation modulation of carbonyldipyrrinone (CDP) fluorescence: emission-ratiometric sensing of calcium

A. Coskun, E. Deniz and E. U. Akkaya, J. Mater. Chem., 2005, 15, 2908 DOI: 10.1039/B501606A

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