PVC membrane electrode based on bis(2-nitrophenyl)disulfide carrier acts as sensor for zinc ions. Bis(2-nitrophenyl) disulphide undergoes mechanochemical grinding with bis(4-chlorophenyl)disulfide in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene catalyst via metathesis reaction to yield non-symmetrical heterodimer 4-chlorophenyl-2′-nitrophenyl disulfide PVC membrane electrode based on bis(2-nitrophenyl)disulfide carrier acts as sensor for zinc ions. Bis(2-nitrophenyl) disulphide undergoes mechanochemical grinding with bis(4-chlorophenyl)disulfide in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene catalyst via metathesis reaction to yield non-symmetrical heterodimer 4-chlorophenyl-2′-nitrophenyl disulfide