
%0 Journal Article
%A Bates, MRM 
%A Cardwell, TJ 
%A Cattrall, RW 
%A Deady, LW 
%A Murphy, K 
%T Studies on Cation Selectivities of Some Pyridine-Based Ionophores for Use in Polymer Membrane Chemical Sensors
%J Australian Journal of Chemistry
%D 1991/11/01
%V 44
%N 11
%P 1603-1613
%K 
%R https://doi.org/10.1071/CH9911603
%U https://www.publish.csiro.au/paper/CH9911603 
%X The synthesis of some macrocyclic compounds based on 4-octyloxypyridine-2,6-dicarboxylic acid, containing sulfur and/or oxygen atoms in the 2 to 6-bridging unit, along with some non-cyclic analogues is reported. These were tested for cation selectivity in poly(vinyl chloride)-based membrane electrodes. Little selectivity was found for any ion with the oxygen-containing compounds, and none approached the selectivity for potassium reported previously for a related compound. High bonding affinities for class b acceptors, particularly Ag+ and Hg2+, were found for sulfur-containing compounds. The complexation with Hg2+ was so strong that the electrodes showed behaviour characteristic of an anion response. 
