Comparative Study on Sensing and Optical Properties of Carbazole Linked Novel Zinc(Ii) and Cobalt (Ii) Phthalocyanines

36 Pages Posted: 15 Jul 2022

See all articles by Ayşe Gül Gürek

Ayşe Gül Gürek

Gebze Technical University

Hidayet Sarıogulları

Gebze Technical University

Ibrahim F. Sengul

Gebze Technical University

Abstract

In the current work, symmetrically carbazole linked Zn(II) and Co(II) phthalocyanines (Pcs) have been succesfully synthesized and characterized through FT-IR, UV-vis and MALDI-TOF spectrometry along with 1 H and 13 C NMR spectroscopy. The electrochemical performance of the targeted metallo- phthalocyanines was demonstrated with cyclic voltammetry (CV), and square wave  voltammetry (SWV).  The final phthalocyanines were used as hybrid materials for the preparation of the modified glassy carbon electrode (GCE). The hybrid materials were then deposited on GCE via an electropolymerization or electrodeposition method. The surface morphologies of the hybrid electrodes were investigated using SEM/EDX. IR, UV-Vis and Raman spectroscopies were carried out to evaluate the surface of the hybrid electrodes. The N-ethylcarbazole moiety and redox active Zn(II), Co(II) metal centers were employed in order to improve the sensing performance of targeted compounds. Furthermore, hybrid material-graphene modified GCEs have been designed to compare and rise the analytical activity. The sensing properties of the designed electrodes was investigated to detect electrochemically active biomolecules namely, dopamine (DA), ascorbic acid (AA), and uric acid (UA) in both PBS and tap water sample. The Grp/ Ply(Car-CoPc)/GCE electrode was only detected DA with a limit of detection (LOD) of 16 nM. On the other hand, LOD values of Grp(Car-CoPc)/GCE were determined by voltammetric analyses as 3.38 μM and 0.62 μM for AA and UA, respectively. Sensing performances of the designed electrodes were eximined for the concurrently determination of DA and UA using differential pulse voltammetry (DPV) method.

Keywords: Phthalocyanine, Carbazole, Electrochemical sensor, Ascorbic acid (AA), Dopamine (DA), Uric acid (UA)

Suggested Citation

Gürek, Ayşe Gül and Sarıogulları, Hidayet and Sengul, Ibrahim F., Comparative Study on Sensing and Optical Properties of Carbazole Linked Novel Zinc(Ii) and Cobalt (Ii) Phthalocyanines. Available at SSRN: https://ssrn.com/abstract=4163894 or http://dx.doi.org/10.2139/ssrn.4163894

Ayşe Gül Gürek (Contact Author)

Gebze Technical University

Muallim koy-Gebze-Kocaeli
Kocaeli, 41400

Hidayet Sarıogulları

Gebze Technical University ( email )

Muallim koy-Gebze-Kocaeli
Kocaeli, 41400

Ibrahim F. Sengul

Gebze Technical University ( email )

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