Equivalent device and optical band gaps analysis of acidic red dye imprinted hydrogels


COŞKUN R. , Okutan M., Yalcin O., Ozturk M., Kirsoy A., Oncan M.

JOURNAL OF POLYMER RESEARCH, vol.29, no.5, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 5
  • Publication Date: 2022
  • Doi Number: 10.1007/s10965-022-03026-1
  • Title of Journal : JOURNAL OF POLYMER RESEARCH
  • Keywords: Hydrogels, Dielectric properties, Organic conductivity, Electrochemical biosensor, Smith chart, DIELECTRIC-PROPERTIES, BROWNIAN-MOTION, FE3O4 NANOPARTICLES, SYNTHETIC CIRCUITS, RELAXATION, IMPEDANCE, SPECTROSCOPY, COMPOSITE, MECHANISM, POLYMERS

Abstract

Structural, optical and dielectric properties of high quality hydrogels with different doses acidic red dye imprinted were successfully analyzed in detail in this work into provide important information about the technological applications. Absorbance spectra and their energy band gaps for the acidic red dye imprinted hydrogels have been analyzed with UV spectroscopy. The complex dielectric constant, the tangent/dissipation factor (tan delta), the complex impedance, the capacitance and the complex electric modulus were measured in the frequency range of 100 Hz to 40 MHz at room temperature. It has been determined that the peak values of the tangent value in the AR doped samples in the high frequency region are due to the anionic dye effect, unlike the cationic dye doped samples. The dominant effects such as the complex dielectric constant and electric modulus in high frequency region for acidic red dye imprinted hydrogels have been attributed to the Maxwell-Wagner theory, the basis of Kroop's approach and the ionic conductivity. Experimental plane plots (Cole-Cole plots) of the complex dielectric constant, impedance and electric modulus for different doses acidic red dye imprinted hydrogels were obtained. In order to analyze the suitability of the samples for electrical circuit applications, the equivalent electrical circuit corresponding to the Cole-Cole plots for the complex electric modulus was calculated and adapted with Smith Chart.