A novel copper (II) selective sensor based on Dimethyl 4, 4′ (o-phenylene) bis(3-thioallophanate) in PVC matrix

► A new membrane material has been used for copper ISE. ► Sensor shows Nernstian slope, wide linear response and working pH range. ► Sensor shows short response time, long lifetime. ► Highly selective over alkali, alkaline earth, and transition metal ions ► Can be used for quantitative determination of Cu(II) in synthetic, real samples