Issue 5, 2006
From the journal:

Organic & Biomolecular Chemistry

A calixarene based fluorescent Sr2+ and Ca2+ probe

Hai-Feng Ji,*a   Yuming Yang,a   Xiaohe Xua  and  Gilbert Brownb  

* Corresponding authors

a Department of Chemistry and Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA, USA
E-mail: hji@chem.latech.edu

b Chemical and Analytical Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

Abstract

A fluorescent probe, PyCalix, which has two pyrene moieties at the lower rim of a calix[4]arene fixed in the cone conformation was synthesized and its complexation behavior with alkali and alkaline earth cations was studied by fluorescence spectrometry. The compound showed intramolecular excimer emission at approximately 480 nm in the fluorescence spectra. Upon complexation with alkaline earth metal cations, a decrease of excimer emission was observed. The decrease of excimer emission was accompanied by an increase of monomer emission of pyrenes at 397 nm. The order of complexation constants of PyCalix with metal ions was Sr2+ ∼ Ca2+ > Ba2+ > Mg2+ > K+ > Na+ > Cs+ for all reagents. PyCalix doped polyvinyl chloride (PVC) membrane was fabricated and our results showed that this membrane can be used for selective detection of Sr2+.

Graphical abstract: A calixarene based fluorescent Sr2+ and Ca2+ probe

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Article information

DOI
https://doi.org/10.1039/B517877K
Article type
Communication
Submitted
16 Dec 2005
Accepted
18 Jan 2006
First published
27 Jan 2006

Org. Biomol. Chem., 2006,4, 770-772

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A calixarene based fluorescent Sr2+ and Ca2+ probe

H. Ji, Y. Yang, X. Xu and G. Brown, Org. Biomol. Chem., 2006, 4, 770 DOI: 10.1039/B517877K

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