Adsorption of EDOT on graphene: DFT and MC studies

Gbolahan Joseph Adekoya, Oladipo Folorunso, Oluwasegun Chijioke Adekoya, Yskandar Hamam, Emmanuel Rotimi Sadiku, Suprakas Sinha Ray

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Inthis paper, we studied the adsorption behaviour of a 3,4-ethylene dioxythiophene (EDOT) molecule on a graphene sheet. Monte Carlo (MC) calculation was performed to determine the lowest energysite of the adsorbate on the graphene substrate. The results obtained showed that there is a strong interaction with binding energies ranging from -11.56 to -14.89 Kcal/mol (-0.50 to -0.65 eV) for all configurations obtained. The average adsorption distance of the isolated EDOT molecule on the surface of the graphene sheet is 2.60 Å. The electronic properties of these organic-inorganic systems were further investigated using density functional theory (DFT) calculations. The resulting charge density difference of the nanocomposite reveals possible charge transfer which suggests chemisorption and the bandgap of 0.001 to 0.004 eV obtained indicates excellent electrical conductivity. In sum, this study shows that EDOT-graphene systems can be employed for electronic applications specifically for energy storage.

Original languageEnglish
Title of host publicationProceedings of the 36th International Conference of the Polymer Processing Society, PPS 2021
EditorsAbdellah Ajji, Frej Mighri, Hani E. Naguib
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735445062
DOIs
Publication statusPublished - 23 May 2023
Event36th International Conference of the Polymer Processing Society, PPS 2021 - Montreal, Canada
Duration: 26 Sept 202129 Sept 2021

Publication series

NameAIP Conference Proceedings
Volume2607
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference36th International Conference of the Polymer Processing Society, PPS 2021
Country/TerritoryCanada
CityMontreal
Period26/09/2129/09/21

Keywords

  • DFT
  • EDOT
  • Graphene
  • Monte Carlo
  • Polymer Nanocomposite

ASJC Scopus subject areas

  • General Physics and Astronomy

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