The quenching effect of ethylenediamine on strong chemiluminescence of luminol system in the presence of chelate of copper complex (N-(2-(2-aminoethylamino) ethyl)-1H-pyrrole-2-carboxamide-Cu (II)) was studied. Copper (II) complex with a tetradentate unsymmetrical ligand was prepared by one-pot condensation of methyl-2-pyrrole carboxylate, diethylenetriamine and copper (II) sulfate [1]. The chemiluminescence parameters were evaluated from computer fitting of the resulting intensity-time plots [2]. These systems resulted in Stern–Volmer plots in the quencher concentration range of 1.00 × 10-5 to 1.00 × 10-3M with kQ value of 1.7*104M-1.
