(1) Department of Chemistry, Henan University, Kaifeng, Henan, People's Republic of China;(2) Department of Chemistry, Brigham Young University, 84602 Provo, UT, USA
Abstract:
Five new bis(benzo-15-crown-5) derivatives with different connecting groups were synthesized. Potassium ion-selective PVC membrane electrodes based on these bis(crown ether)s were prepared and their selective properties were measured. The results showed that most of these electrodes are stable over a wide pH range and their selectivity coefficients were better than those of an electrode based on natural valinomycin.