Experimental and computational investigations of structural and photoluminescence properties of PVK/SWCNTs nanocomposites

Boubaker Zaidi; Mohammed G. Althobaiti; Nejmeddine Smida; Boubaker Zaidi; Mohammed G. Althobaiti; Nejmeddine Smida

doi:10.3934/matersci.2023027

AIMS Materials Science

2023, Volume 10, Issue 3: 484-498. doi: 10.3934/matersci.2023027

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Research article Topical Sections

Experimental and computational investigations of structural and photoluminescence properties of PVK/SWCNTs nanocomposites

1.
Department of Physics, College of Science and Humanities, Shaqra University, Dawadmi 11911, Saudi Arabia
2.
Laboratoire de Synthèse Asymétrique et Ingénierie Moléculaire de Matériaux Organiques Pour L'électronique Organique LR 18ES19, Department of Physics, Faculty of Science, University of Monastir, Monastir 5019, Tunisia
3.
Department of Physics, Faculty of Science, Taif University, Taif 21974, Saudi Arabia
4.
Department of Chemistry, College of Science and Humanities, Shaqra University, Quwaiiyah 19257, Saudi Arabia
5.
Laboratory of Interfaces and Advanced Materials, Faculty of Science, University of Monastir, Monastir 5019, Tunisia

Received: 10 February 2023 Revised: 10 May 2023 Accepted: 29 May 2023 Published: 20 June 2023

A simple mechanical dispersion method was used to elaborate new nanocomposite from the combination of single walled carbon nanotubes (SWCNTs) and polyvinylcarbazole (PVK) polymer. The obtained samples were annealed at the moderate temperature of 333 K to achieve good dispersion and inhibit phase separation. Force constants calculations using Density Functional theory were correlated with FTIR measurements to support the interaction between both components. Raman scattering was used to check the dispersion state of SWCNTs on the PVK polymer. Optical absorption analysis and stationary photoluminescence and time resolved photoluminescence technics have been used to elucidate the change of optical properties after SWCNTs adding. The formation of bulk nano-hetero-junction resulting from the extended interfaces, leading to efficient dissociation of the charge pairs was shown by quenching effects in polymer photoluminescence when increasing SWCNTS contents. A noticeable decrease of the life time is observed by time resolved photoluminescence, which reflects the shortness of diffusion pathways and consequently an improvement of the electron transfer.
- SWCNTs,
- PVK,
- nanocomposites,
- Raman,
- photoluminescence,
- DFT
Citation: Boubaker Zaidi, Mohammed G. Althobaiti, Nejmeddine Smida. Experimental and computational investigations of structural and photoluminescence properties of PVK/SWCNTs nanocomposites[J]. AIMS Materials Science, 2023, 10(3): 484-498. doi: 10.3934/matersci.2023027

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Abstract

A simple mechanical dispersion method was used to elaborate new nanocomposite from the combination of single walled carbon nanotubes (SWCNTs) and polyvinylcarbazole (PVK) polymer. The obtained samples were annealed at the moderate temperature of 333 K to achieve good dispersion and inhibit phase separation. Force constants calculations using Density Functional theory were correlated with FTIR measurements to support the interaction between both components. Raman scattering was used to check the dispersion state of SWCNTs on the PVK polymer. Optical absorption analysis and stationary photoluminescence and time resolved photoluminescence technics have been used to elucidate the change of optical properties after SWCNTs adding. The formation of bulk nano-hetero-junction resulting from the extended interfaces, leading to efficient dissociation of the charge pairs was shown by quenching effects in polymer photoluminescence when increasing SWCNTS contents. A noticeable decrease of the life time is observed by time resolved photoluminescence, which reflects the shortness of diffusion pathways and consequently an improvement of the electron transfer.

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