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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, F., Dennis, J.O., Meriaudeau, F., Ahmed, A.Y., Seong, K.C., Fen, Y.W., Sadrolhosseini, A.R., Abdulkadir, B.A., Ayinla, R.T., Daniyal, W.M.E.M.M., Omar, N.A.S., Tamam, N., Sulieman, A.
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Published: MDPI AG 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092119211&doi=10.3390%2fmolecules25194414&partnerID=40&md5=59e7109da039e58075fbd483d972cbc4
http://eprints.utp.edu.my/29944/
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spelling my.utp.eprints.299442022-03-25T03:14:59Z Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents Usman, F. Dennis, J.O. Meriaudeau, F. Ahmed, A.Y. Seong, K.C. Fen, Y.W. Sadrolhosseini, A.R. Abdulkadir, B.A. Ayinla, R.T. Daniyal, W.M.E.M.M. Omar, N.A.S. Tamam, N. Sulieman, A. 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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. MDPI AG 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092119211&doi=10.3390%2fmolecules25194414&partnerID=40&md5=59e7109da039e58075fbd483d972cbc4 Usman, F. and Dennis, J.O. and Meriaudeau, F. and Ahmed, A.Y. and Seong, K.C. and Fen, Y.W. and Sadrolhosseini, A.R. and Abdulkadir, B.A. and Ayinla, R.T. and Daniyal, W.M.E.M.M. and Omar, N.A.S. and Tamam, N. and Sulieman, A. (2020) Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents. Molecules, 25 (19). http://eprints.utp.edu.my/29944/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
format Article
author Usman, F.
Dennis, J.O.
Meriaudeau, F.
Ahmed, A.Y.
Seong, K.C.
Fen, Y.W.
Sadrolhosseini, A.R.
Abdulkadir, B.A.
Ayinla, R.T.
Daniyal, W.M.E.M.M.
Omar, N.A.S.
Tamam, N.
Sulieman, A.
spellingShingle Usman, F.
Dennis, J.O.
Meriaudeau, F.
Ahmed, A.Y.
Seong, K.C.
Fen, Y.W.
Sadrolhosseini, A.R.
Abdulkadir, B.A.
Ayinla, R.T.
Daniyal, W.M.E.M.M.
Omar, N.A.S.
Tamam, N.
Sulieman, A.
Dependence of the optical constant parameters of p-toluene sulfonic acid-doped polyaniline and its composites on dispersion solvents
author_facet Usman, F.
Dennis, J.O.
Meriaudeau, F.
Ahmed, A.Y.
Seong, K.C.
Fen, Y.W.
Sadrolhosseini, A.R.
Abdulkadir, B.A.
Ayinla, R.T.
Daniyal, W.M.E.M.M.
Omar, N.A.S.
Tamam, N.
Sulieman, A.
author_sort Usman, F.
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 MDPI AG
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092119211&doi=10.3390%2fmolecules25194414&partnerID=40&md5=59e7109da039e58075fbd483d972cbc4
http://eprints.utp.edu.my/29944/
_version_ 1738657037601996800
score 13.211869

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