Electrochemical Detection of Dopamine using a Phenyl Carboxylic Acid‐Functionalized Electrode Made by Electrochemical Reduction of a Diazonium Salt
Assist. Prof. Dr. Saima Anjum,
Assoc. Prof. Dr. Baohua Lou,
Amiza Tahir,
Prof. Dr. Aziz‐ur‐Rehman,
Assist. Prof. Dr. M. Rehan H. Shah Gilani,
Prof. Dr. Guobao Xu
Affiliations
Assist. Prof. Dr. Saima Anjum
State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P.R. China
Assoc. Prof. Dr. Baohua Lou
State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P.R. China
Amiza Tahir
Department of Chemistry Govt. Sadiq College Women University Bahawalpur Pakistan
Prof. Dr. Aziz‐ur‐Rehman
State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P.R. China
Assist. Prof. Dr. M. Rehan H. Shah Gilani
Institute of Chemical Sciences Bahauddin Zakariya University Multan 60800 Pakistan
Prof. Dr. Guobao Xu
State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P.R. China
Abstract A glassy carbon electrode (GCE) has been modified by an in situ electrochemical reduction of an aryldiazonium salt generated from the reaction of 4‐aminobenzoic acid and sodium nitrite in acidic ethanolic solution. The as‐prepared phenyl carboxylic acid‐modified glassy carbon electrode has been, for the first time, used for the electrochemical determination of dopamine. Under optimal experimental parameters, outstanding electrocatalytic activity, high sensitivity at a LOD of 5.6×10−9 m, and broad linearity of 0.1 to 1000 μm were obtained. The crafted electrochemical platform demonstrated excellent stability, specificity, and anti‐interference capability towards the sensing of dopamine.
