Cation identity dependence of crown ether photonic crystal Pb²⁺ sensing

We quantitatively modeled the volume phase transition of a hydrogel containing a crystalline colloidal array with a crown ether ligand which binds Pb²⁺. The hydrogel volume response and the wavelength diffracted depend on the Pb²⁺ concentration and on both the ionic strength and the valence of the n...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2007-03, Vol.387 (6), p.2121-2130
Hauptverfasser: Yan, Fangyong, Asher, Sanford
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Asher, Sanford
description We quantitatively modeled the volume phase transition of a hydrogel containing a crystalline colloidal array with a crown ether ligand which binds Pb²⁺. The hydrogel volume response and the wavelength diffracted depend on the Pb²⁺ concentration and on both the ionic strength and the valence of the nonbinding ionic species. We successfully modeled the response of this hydrogel Pb²⁺ sensor to ionic strength and the cation valence of the added salts.
doi_str_mv 10.1007/s00216-006-1088-8
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subjects Cations, Divalent - chemistry
Chromones
Crown ether ligand
Crown Ethers - chemistry
Crystalline colloidal array
Crystallization
Hydrogel
ionic strength
Lead - chemistry
Osmolar Concentration
phase transition
Photochemistry
Solutions
Wavelength diffracted
title Cation identity dependence of crown ether photonic crystal Pb²⁺ sensing
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