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Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene

Graphene quantum dots (GQDs), the zero dimensional (0D) single nanostructures, have many exciting technological applications in diversified fields such as sensors, light emitting devices, bio imaging probes, solar cells, etc. They are emerging as a functional tool to modulate light by means of molec...

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Autores principales: Nancy, Parvathy, Joy, Nithin, Valluvadasan, Sivakumaran, Philip, Reji, Thomas, Sabu, Antoine, Rodolphe, Kalarikkal, Nandakumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9694969/
https://www.ncbi.nlm.nih.gov/pubmed/36432087
http://dx.doi.org/10.3390/molecules27227988
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author Nancy, Parvathy
Joy, Nithin
Valluvadasan, Sivakumaran
Philip, Reji
Thomas, Sabu
Antoine, Rodolphe
Kalarikkal, Nandakumar
author_facet Nancy, Parvathy
Joy, Nithin
Valluvadasan, Sivakumaran
Philip, Reji
Thomas, Sabu
Antoine, Rodolphe
Kalarikkal, Nandakumar
author_sort Nancy, Parvathy
collection PubMed
description Graphene quantum dots (GQDs), the zero dimensional (0D) single nanostructures, have many exciting technological applications in diversified fields such as sensors, light emitting devices, bio imaging probes, solar cells, etc. They are emerging as a functional tool to modulate light by means of molecular engineering due to its merits, including relatively low extend of loss, large outstretch of spatial confinement and control via doping, size and shape. In this article, we present a one pot, facile and ecofriendly synthesis approach for fabricating GQDs via pulsed laser irradiation of an organic solvent (toluene) without any catalyst. It is a promising synthesis choice to prepare GQDs due to its fast production, lack of byproducts and further purification, as well as the control over the product by accurate tuning of laser parameters. In this work, the second (532 nm) and third harmonic (355 nm) wavelengths of a pulsed nanosecond Nd:YAG laser have been employed for the synthesis. It has been found that the obtained GQDs display fluorescence and is expected to have potential applications in optoelectronics and light-harvesting devices. In addition, nonlinear optical absorption of the prepared GQDs was measured using the open aperture z-scan technique (in the nanosecond regime). These GQDs exhibit excellent optical limiting properties, especially those synthesized at 532 nm wavelength.
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spelling pubmed-96949692022-11-26 Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene Nancy, Parvathy Joy, Nithin Valluvadasan, Sivakumaran Philip, Reji Thomas, Sabu Antoine, Rodolphe Kalarikkal, Nandakumar Molecules Article Graphene quantum dots (GQDs), the zero dimensional (0D) single nanostructures, have many exciting technological applications in diversified fields such as sensors, light emitting devices, bio imaging probes, solar cells, etc. They are emerging as a functional tool to modulate light by means of molecular engineering due to its merits, including relatively low extend of loss, large outstretch of spatial confinement and control via doping, size and shape. In this article, we present a one pot, facile and ecofriendly synthesis approach for fabricating GQDs via pulsed laser irradiation of an organic solvent (toluene) without any catalyst. It is a promising synthesis choice to prepare GQDs due to its fast production, lack of byproducts and further purification, as well as the control over the product by accurate tuning of laser parameters. In this work, the second (532 nm) and third harmonic (355 nm) wavelengths of a pulsed nanosecond Nd:YAG laser have been employed for the synthesis. It has been found that the obtained GQDs display fluorescence and is expected to have potential applications in optoelectronics and light-harvesting devices. In addition, nonlinear optical absorption of the prepared GQDs was measured using the open aperture z-scan technique (in the nanosecond regime). These GQDs exhibit excellent optical limiting properties, especially those synthesized at 532 nm wavelength. MDPI 2022-11-17 /pmc/articles/PMC9694969/ /pubmed/36432087 http://dx.doi.org/10.3390/molecules27227988 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nancy, Parvathy
Joy, Nithin
Valluvadasan, Sivakumaran
Philip, Reji
Thomas, Sabu
Antoine, Rodolphe
Kalarikkal, Nandakumar
Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title_full Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title_fullStr Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title_full_unstemmed Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title_short Fluorescence and Nonlinear Optical Response of Graphene Quantum Dots Produced by Pulsed Laser Irradiation in Toluene
title_sort fluorescence and nonlinear optical response of graphene quantum dots produced by pulsed laser irradiation in toluene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9694969/
https://www.ncbi.nlm.nih.gov/pubmed/36432087
http://dx.doi.org/10.3390/molecules27227988
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