%A F Yan
%A S Asher
%J Analytical and Bioanalytical Chemistry
%T Cation identity dependence of crown ether photonic crystal Pb<sup>2+</sup> sensing
%X 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. [Figure not available: see fulltext.]. ? Springer-Verlag 2007.
%N 6
%P 2121 - 2130
%V 387
%D 2007
%R 10.1007/s00216-006-1088-8
%L pittir17240