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Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films

Graphene based conducting polymer composites are emerging contenders for newer optoelectronics devices like solar cells and linear / nonlinear optical devices. Beside these advanced applications, characterization approaches to analyze their liner/nonlinear optical constants, surface chemical state a...

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Main Authors: Jilani, Asim, Othman, Mohd. Hafiz Dzarfan, Ansari, Mohammad Omaish, Ullah Khan, Imran, Hussain, Syed Zajif
Format: Article
Published: Elsevier Ltd. 2019
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/88726/
http://dx.doi.org/10.1016/j.synthmet.2019.03.019
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spelling my.utm.887262020-12-15T10:39:59Z http://eprints.utm.my/id/eprint/88726/ Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films Jilani, Asim Othman, Mohd. Hafiz Dzarfan Ansari, Mohammad Omaish Ullah Khan, Imran Hussain, Syed Zajif TP Chemical technology Graphene based conducting polymer composites are emerging contenders for newer optoelectronics devices like solar cells and linear / nonlinear optical devices. Beside these advanced applications, characterization approaches to analyze their liner/nonlinear optical constants, surface chemical state and structural analysis in thin film states are much needed. Herein, we reported a facile approach for the fabrication of graphene oxide (GO) and polyaniline (PANI) nano composites (PANI/GO) thin films using spin coating. Thereafter, the liner/nonlinear optical constants including first and third order nonlinear optical susceptibility were calculated using UV–vis (UV–vis) near infra-red absorption spectroscopic technique which will be an alternative to Z-scan approach and is poorly explored till now for such composites. Moreover, the increase or decrease in elemental bonding or interactions between C–C, C–O, C–O–C, C–N and percentage occurrence of C–OH, O–C[dbnd]O, –NH 2 , –N + H=, and –N + H 2 – functionalities in PANI/GO composites were concisely explored using X-ray photoelectron spectroscopy (XPS). Addition to proving the amorphous nature of PANI/GO composites in their X-ray diffraction studies, an increase in intensity of GO peak was explored due to an increase in elemental interactions among the GO and PANI. The reduction in band gap (3.27 to 2.66 eV) and diameter of Sp 2 carbon (19.62 to 15.96 nm) of PANI/GO thin films was observed with an increase in the GO concentration. The first order nonlinear optical susceptibility (X (1) ) is influenced by π-π* and n- π* interaction. The third order nonlinear optical susceptibility (X (3) ) was found in the range of 10 −10 to 10 -7 esu which can be further, optimized by changing the ratio of GO and PANI. Elsevier Ltd. 2019-05 Article PeerReviewed Jilani, Asim and Othman, Mohd. Hafiz Dzarfan and Ansari, Mohammad Omaish and Ullah Khan, Imran and Hussain, Syed Zajif (2019) Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films. Synthetic Metals, 251 . pp. 30-39. ISSN 0379-6779 http://dx.doi.org/10.1016/j.synthmet.2019.03.019 DOI:10.1016/j.synthmet.2019.03.019
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Jilani, Asim
Othman, Mohd. Hafiz Dzarfan
Ansari, Mohammad Omaish
Ullah Khan, Imran
Hussain, Syed Zajif
Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
description Graphene based conducting polymer composites are emerging contenders for newer optoelectronics devices like solar cells and linear / nonlinear optical devices. Beside these advanced applications, characterization approaches to analyze their liner/nonlinear optical constants, surface chemical state and structural analysis in thin film states are much needed. Herein, we reported a facile approach for the fabrication of graphene oxide (GO) and polyaniline (PANI) nano composites (PANI/GO) thin films using spin coating. Thereafter, the liner/nonlinear optical constants including first and third order nonlinear optical susceptibility were calculated using UV–vis (UV–vis) near infra-red absorption spectroscopic technique which will be an alternative to Z-scan approach and is poorly explored till now for such composites. Moreover, the increase or decrease in elemental bonding or interactions between C–C, C–O, C–O–C, C–N and percentage occurrence of C–OH, O–C[dbnd]O, –NH 2 , –N + H=, and –N + H 2 – functionalities in PANI/GO composites were concisely explored using X-ray photoelectron spectroscopy (XPS). Addition to proving the amorphous nature of PANI/GO composites in their X-ray diffraction studies, an increase in intensity of GO peak was explored due to an increase in elemental interactions among the GO and PANI. The reduction in band gap (3.27 to 2.66 eV) and diameter of Sp 2 carbon (19.62 to 15.96 nm) of PANI/GO thin films was observed with an increase in the GO concentration. The first order nonlinear optical susceptibility (X (1) ) is influenced by π-π* and n- π* interaction. The third order nonlinear optical susceptibility (X (3) ) was found in the range of 10 −10 to 10 -7 esu which can be further, optimized by changing the ratio of GO and PANI.
format Article
author Jilani, Asim
Othman, Mohd. Hafiz Dzarfan
Ansari, Mohammad Omaish
Ullah Khan, Imran
Hussain, Syed Zajif
author_facet Jilani, Asim
Othman, Mohd. Hafiz Dzarfan
Ansari, Mohammad Omaish
Ullah Khan, Imran
Hussain, Syed Zajif
author_sort Jilani, Asim
title Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
title_short Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
title_full Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
title_fullStr Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
title_full_unstemmed Linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
title_sort linear /nonlinear optical susceptibility spectroscopic constants of polyaniline@graphene oxide nanocomposite thin films
publisher Elsevier Ltd.
publishDate 2019
url http://eprints.utm.my/id/eprint/88726/
http://dx.doi.org/10.1016/j.synthmet.2019.03.019
_version_ 1687393612034211840
score 13.211869

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