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Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents

The optical constants of Para-Toluene sulfonic acid-doped polyaniline (PANI), PANIchitosan composites, PANI-reduced graphene-oxide composites and a ternary composite comprising of PANI, chitosan and reduced graphene-oxide dispersed in diluted p-toluene sulfonic acid (PTSA) solution and N-Methyl-2-Py...

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Main Authors: Usman, Fahad, Dennis, John Ojur, Meriaudeau, Fabrice, Ahmed, Abdelaziz Yousif, Khe, Cheng Seong, Yap, Wing Fen, Sadrolhosseini, Amir Reza, Abdulkadir, Bashir Abubakar, Ayinla, Ridwan Tobi, Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim, Sheh Omar, Nur Alia, Tamam, Nissren, Sulieman, Abdelmoneim
Format: Article
Language:English
Published: Multidisciplinary Digital Publishing Institute 2020
Online Access:http://psasir.upm.edu.my/id/eprint/88361/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/88361/
https://www.mdpi.com/1420-3049/25/19/4414
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spelling my.upm.eprints.883612022-11-24T01:49:21Z http://psasir.upm.edu.my/id/eprint/88361/ Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents Usman, Fahad Dennis, John Ojur Meriaudeau, Fabrice Ahmed, Abdelaziz Yousif Khe, Cheng Seong Yap, Wing Fen Sadrolhosseini, Amir Reza Abdulkadir, Bashir Abubakar Ayinla, Ridwan Tobi Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim Sheh Omar, Nur Alia Tamam, Nissren Sulieman, Abdelmoneim The optical constants of Para-Toluene sulfonic acid-doped polyaniline (PANI), PANIchitosan composites, PANI-reduced graphene-oxide composites and a ternary composite comprising of PANI, chitosan and reduced graphene-oxide dispersed in diluted p-toluene sulfonic acid (PTSA) solution and N-Methyl-2-Pyrrolidone (NMP) solvent have been evaluated and compared. The optical constant values were extracted from the absorbance spectra of thin layers of the respective samples. The potential utilization of the materials as the active sensing materials of surface plasmon resonance biosensors has also been assessed in terms of the estimated value of the penetration depth through a dielectric medium. The results show a reasonable dependence of the optical constant parameters on the solvent type. Higher real part refractive index (n) and real part complex dielectric permittivity (ε’) values were observed for the samples prepared using PTSA solution, while higher optical conductivity values were observed for the NMP-based samples due to their relatively higher imaginary part refractive index (k) and imaginary part complex dielectric permittivity (ε″) values. In addition, NMP-based samples show improvement in terms of the penetration depth through a dielectric medium by around 9.5, 1.6, 4.4 and 2.9 times compared to PTSA-based samples for the PANI, PANI-chitosan, PANI-RGO and the ternary composites, respectively. Based on these, it is concluded that preparation of these materials using different dispersion solvents could produce materials of different optical properties. Thus, the variation of the dispersion solvent will allow the flexible utilization of the PANI and the composites for diverse applications. Multidisciplinary Digital Publishing Institute 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88361/1/ABSTRACT.pdf Usman, Fahad and Dennis, John Ojur and Meriaudeau, Fabrice and Ahmed, Abdelaziz Yousif and Khe, Cheng Seong and Yap, Wing Fen and Sadrolhosseini, Amir Reza and Abdulkadir, Bashir Abubakar and Ayinla, Ridwan Tobi and Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim and Sheh Omar, Nur Alia and Tamam, Nissren and Sulieman, Abdelmoneim (2020) Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents. Molecules, 25 (19). pp. 1-12. ISSN 1420-3049 https://www.mdpi.com/1420-3049/25/19/4414 10.3390/molecules25194414
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The optical constants of Para-Toluene sulfonic acid-doped polyaniline (PANI), PANIchitosan composites, PANI-reduced graphene-oxide composites and a ternary composite comprising of PANI, chitosan and reduced graphene-oxide dispersed in diluted p-toluene sulfonic acid (PTSA) solution and N-Methyl-2-Pyrrolidone (NMP) solvent have been evaluated and compared. The optical constant values were extracted from the absorbance spectra of thin layers of the respective samples. The potential utilization of the materials as the active sensing materials of surface plasmon resonance biosensors has also been assessed in terms of the estimated value of the penetration depth through a dielectric medium. The results show a reasonable dependence of the optical constant parameters on the solvent type. Higher real part refractive index (n) and real part complex dielectric permittivity (ε’) values were observed for the samples prepared using PTSA solution, while higher optical conductivity values were observed for the NMP-based samples due to their relatively higher imaginary part refractive index (k) and imaginary part complex dielectric permittivity (ε″) values. In addition, NMP-based samples show improvement in terms of the penetration depth through a dielectric medium by around 9.5, 1.6, 4.4 and 2.9 times compared to PTSA-based samples for the PANI, PANI-chitosan, PANI-RGO and the ternary composites, respectively. Based on these, it is concluded that preparation of these materials using different dispersion solvents could produce materials of different optical properties. Thus, the variation of the dispersion solvent will allow the flexible utilization of the PANI and the composites for diverse applications.
format Article
author Usman, Fahad
Dennis, John Ojur
Meriaudeau, Fabrice
Ahmed, Abdelaziz Yousif
Khe, Cheng Seong
Yap, Wing Fen
Sadrolhosseini, Amir Reza
Abdulkadir, Bashir Abubakar
Ayinla, Ridwan Tobi
Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim
Sheh Omar, Nur Alia
Tamam, Nissren
Sulieman, Abdelmoneim
spellingShingle Usman, Fahad
Dennis, John Ojur
Meriaudeau, Fabrice
Ahmed, Abdelaziz Yousif
Khe, Cheng Seong
Yap, Wing Fen
Sadrolhosseini, Amir Reza
Abdulkadir, Bashir Abubakar
Ayinla, Ridwan Tobi
Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim
Sheh Omar, Nur Alia
Tamam, Nissren
Sulieman, Abdelmoneim
Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
author_facet Usman, Fahad
Dennis, John Ojur
Meriaudeau, Fabrice
Ahmed, Abdelaziz Yousif
Khe, Cheng Seong
Yap, Wing Fen
Sadrolhosseini, Amir Reza
Abdulkadir, Bashir Abubakar
Ayinla, Ridwan Tobi
Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim
Sheh Omar, Nur Alia
Tamam, Nissren
Sulieman, Abdelmoneim
author_sort Usman, Fahad
title Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
title_short Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
title_full Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
title_fullStr Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
title_full_unstemmed Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
title_sort dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
publisher Multidisciplinary Digital Publishing Institute
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/88361/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/88361/
https://www.mdpi.com/1420-3049/25/19/4414
_version_ 1751538223782297600
score 13.211869

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