Copper(II) phthalocyanine as an electrocatalytic electrode for cathodic detection of urinary tryptophan.

Herein, we introduce a novel method for tryptophan detection a reduction reaction facilitated by its interaction with a copper(II) phthalocyanine (CuPc) electrocatalytic electrode. This method addresses challenges associated with the susceptibility of the oxidation response to interference from various species when measuring tryptophan in bodily fluids. The reduction currents exhibit a linear increase with tryptophan concentrations in two ranges: 0.