Synthesis, optical and morphological properties of novel pyrazole-based oligoamide film

Abstract

The aim of this study is to prepare novel pyrazole-based oligoamide (oligo-pyrazole) film and to investigate its optical properties. The oligo-pyrazole was obtained by reacting pyrazole-3,4-dicarbonyl dichloride and 2,3-diaminopyridine in a single step reaction. The synthesized oligo-pyrazole was characterized by 1H, 13C NMR, FT-IR, Elemental Analysis and Gel Permeation Chromatography (GPC). The novel oligo-pyrazole film was prepared using synthesized oligo-pyrazole with 94 ?m thickness. The optical properties of the prepared film such as absorbance, transmittance and optical band gap were determined by UV–vis spectroscopy. The Eg value of the oligo-pyrazole film was found to be 1856 eV. The surface morphology of the sample was investigated by an Atomic force microscopy (AFM) tool. It was found that average roughness of the film was 15.55 nm with the homogeneous grain distribution on the surfaces. The oligo-pyrazole film may be a good device in optoelectronic applications due to optical and morphological properties. © 2018