Perchlorate-Selective Polymeric Membrane Sensor based on UnsymmetricalSchiff Base of N2 O2 Cu (II) Complex

Unsymmetrical cu (ii) complex ((2e, 3e)-n-salicylidene-n’-(2-hydroxyphenylmethylieden) 1, 2-phenylenediamino cu (ii)) was synthesized and was studied to characterize its potential as an anion carrier in a pvc membrane electrode. the polymeric membrane electrode prepared with unsymmetrical cu (ii) complex showed excellent response characteristics to perchlorate ion. the electrode exhibited nerstian responses to clo4- ion over a wide concentration range from 1.0 x 10-1 to 1.0 x 10-6 m. the response time of the electrode was fast (< 5s) and the membrane could be used for over 3 months in a ph range of 5-10.the electrode exhibits fast response time, good sensitivity, low detection limit, long stability, appropriate selectivity toward clo4- relative to a variety of other common anions.