Gasochromic response of optical sensing platform integrated with polyaniline and poly(3,4-ethylenedioxythiophene) exposed to NH3 gas

Citation

Ismail, Abdul Hadi and Mohd Yahya, Nor Akmar and Mahdi, Mohd Adzir and Yaacob, Mohd Hanif and Sulaiman, Yusran (2020) Gasochromic response of optical sensing platform integrated with polyaniline and poly(3,4-ethylenedioxythiophene) exposed to NH3 gas. Polymer, 192. art. no. 122313. pp. 1-7. ISSN 0032-3861

Abstract

The optical NH3 gas sensing performance of polyaniline (PANI) and poly(3,4-ethylenedioxythiophene (PEDOT) in the form of bilayers and copolymers was analysed in this study. The order of the bilayers and the presence of acid dopant on the fabrication of the sensing platform produced different absorbance responses upon exposure to NH3 gas. The limit of detection of the bilayer (PANI(aq.)/PEDOT(aq.)) was 7.86 ppm which is under the threshold limit value of NH3, with response and recovery times of 2.33 min and 46.8 s, respectively. The gasochromic behaviour of PANI and PEDOT during the adsorption of NH3 gas was closely related to the changes in the oxidation state which have simultaneously altered the colour intensity of the respective sensing layer.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science Institute of Advanced Technology
DOI Number:	https://doi.org/10.1016/j.polymer.2020.122313
Publisher:	Elsevier
Keywords:	Gasochromism; Optical NH3 gas sensor; Conducting polymers
Depositing User:	Ms. Nuraida Ibrahim
Date Deposited:	07 Oct 2021 02:59
Last Modified:	07 Oct 2021 02:59
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.polymer.2020.122313
URI:	http://psasir.upm.edu.my/id/eprint/89091
Statistic Details:	View Download Statistic

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