Calix[4]arene derivative bearing imidazole groups as carrier for the transport of palladium by using bulk liquid membrane

► The highest transport rate was found as 95% by using BLM. ► A pH gradient between the phases are the driving force for the transport of Pd(II). ► Tetra(tert-butyl)-tetra(4-propylimidazole acetamide-calix[4]arene was used as transporter.