@article{pittir17240,
          volume = {387},
          number = {6},
           month = {March},
          author = {F Yan and S Asher},
           title = {Cation identity dependence of crown ether photonic crystal Pb{\ensuremath{<}}sup{\ensuremath{>}}2+{\ensuremath{<}}/sup{\ensuremath{>}} sensing},
         journal = {Analytical and Bioanalytical Chemistry},
           pages = {2121 -- 2130},
            year = {2007},
             url = {http://d-scholarship-dev.library.pitt.edu/17240/},
        abstract = {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.]. {\copyright} Springer-Verlag 2007.}
}