Synthesis of Poly(azomethine) Containing Sulfonic Acid Unit Oxygen and Sulphur Bridged: Investigation of Its Thermal, Optical and Electrochemical Properties

Year 2022, Volume: 18 Issue: 2, 185 - 191, 30.06.2021

Elif Karacan Yeldir

https://doi.org/10.18466/cbayarfbe.1070592

Abstract

In this study, a poly(azomethine) compound (SBP) containing sulfur and oxygen bridge was obtained from 4,4'-[thiobis(4,1-phenyleneoxy)]dibenzaldehyde (DBA) and 4,4'diamino-2,2'-biphenyl sulfonic acid from condensation reaction. Structural, optical, electrochemical and morphological analyzes of the obtained polymeric material were performed. Structural characterizations were performed from 1H-NMR and FT-IR spectra. Optical properties were determined in the UV-Vis spectrum and the optical band gap was calculated as 3.63 eV. Electrochemical properties were investigated by cyclic voltammetry (CV) and HOMO-LUMO and electrochemical band gap values were calculated. In addition, with the help of Gel Permeation Chromatography (GPC), the number average molecular mass was found to be 5050 Da. By thermogravimetric analysis (TGA), it was found that the thermal decomposition of SBP occurred in four steps and the maximum mass loss was 391 °C. The surface analysis of the obtained polymeric material was investigated with scanning electron microscope (SEM) and it was determined that the surface was rough.

Keywords

Schiff base, poly(azomethine), sulphanilic acid, electrochemical band gap, thermal analysis.

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