Macrocyclic nickel(II) complex and hydrophilic polyurethane film electrodes for the electrocatalytic oxidation and selective detection of norepinephrine

Electropolymerization of negatively charged Ni(II) complex for the selective determination of dopamine in the presence of ascorbic acid

“…Nafion [29][30][31], zeolite [32,33], nontronit clays [34], ultrafine TiO 2 [35], and hydrophilic polyurethane film [36] coated on an electrode surface also made possible effective elimination of AA. However, these methods need complicated electrode preparation process and suffer from low detection limit.…”

Resolution of dopamine and ascorbic acid using nickel(II) complex polymer-modified electrodes

“…An NC-modified electrode has an electrocatalytic effect on the oxidation of AA and DA [20,22,23], although further modification is needed to increase the DA selectivity over that of AA at neutral pH. Further modification using a negatively charged material enhances the DA selectivity and decreases the DA sensitivity [23,24]. For the Ni(II) complex used here, a single modification was more desirable in terms of both sensitivity and selectivity.…”

Doubly Modified Electrodes for the Selective Determination of Dopamine in the Presence of Interfering Species

“…An asymmetric macrocyclic nickel(II) complex, 2,4,9,11-tetramethyl-1,5,8,12-(benzo)tetraaza cyclotetradecinatonickel(II), was used as an electrocatalyst since it was already proved that this compound could catalyze norepinephrine and AA oxidation [22,23]. This macrocyclic Ni(II) complex readily forms a polymer film on the electrode surface upon potential cycling.…”