Electro-catalytic Activity Based MWCNT-tetraamino Zinc(II)phthalocyanine onto the Glassy Carbon Electrode Towards Determination of Bio-analytes: A Cyclic Voltammetric Study

This paper covers the synthesis and characterization of tetraamino Zinc(II) metallophthalocyanine (Zn(II)TAPc) using spectroscopic and electrochemical techniques. The electrochemical determination of dopamine (DA), ascorbic acid (AA) and uric acid (UA) was investigated using composite modified MWCNT-Zn(II)TAPc/GCE, due to their excellent conductivity, electrons transfer ability compared to the bare glassy carbon electrode (GCE), and because the charge transfer rate increases with multiwalled carbon nano tubes (MWCNT) on the surface of GCE. As a result, electrochemical sensing of bioanalytes was investigated on MWCNT-Zn(II)TAPc/GCE, and the analytical profile of micro molar concentration (µM) of DA is in the linear range of 0.1 to 1.1 µML-1 with LOD is 0.033µML-1, sensitivity of 14.063 µAµML-1 and the electro analytical sensing of AA and UA while using modified composite electrode for AA the linear range of 0.2-0.7 μmol L−1, LOD of 0.066μmol L−1 and sensitivity  54.821 μAμM−1 cm−2, for UA the linear range of 0.05–1.2 μmolL−1, lower detection limit of 0.066 μmolL−1 and sensitivity of 0.515 μAμM−1 cm−2, The MWCNT-Zn(II)TAPc/GCE shows good repeatability, stability and reproducibility.