Sensor for silver(I) ion based on Schiff-base-ptertbutylcalix[4] arene

Abstract: The preparation of polymer membrane selective to silver ion and its application to ion-selective electrode is reported here. PVC membrane contain silver-selective calix[4]arene derivative as ionophore. The membrane electrode is highly selective to silver ion and exhibit good linear response over a wide concentration range of 1.0×10-1 to 1.0×10-5 M AgNO3 with Nernstian slope of 58.9 mV per decade. The detection limit of electrode is 6.31×10-6 M.The calix[4]arene based membrane electrode exhibit enhanced selectivities for silver ion over other cations; log K Pot Ag,Na =-2.35, log K Pot Ag,K =-2.65, lo