Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions

Currently, the preparation of high-quality graphene (G) dispersions is crucial due to the increasing demand for this nanomaterial in a wide range of industries. However, given the strong π–π stacking tendency between G sheets, dispersant agents such as surfactants or polymers are required to attain...

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Detalles Bibliográficos
Autores: Sainz-Urruela, Carlos, Vera-López, Soledad, Diez-Pascual, Ana María, San Andrés, María Paz
Tipo de recurso: conjunto de datos
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consorcio Madroño
Repositorio:e-cienciaDatos, Repositorio de Datos del Consorcio Madroño
OAI Identifier:doi:10.21950/2QQJ3J
Acceso en línea:https://doi.org/10.21950/2QQJ3J
Access Level:acceso abierto
Palabra clave:Chemistry
Resveratrol
Graphene
Dispersion
Fluorescence
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spelling Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactionsSainz-Urruela, CarlosVera-López, SoledadDiez-Pascual, Ana MaríaSan Andrés, María PazChemistryResveratrolGrapheneDispersionFluorescenceCurrently, the preparation of high-quality graphene (G) dispersions is crucial due to the increasing demand for this nanomaterial in a wide range of industries. However, given the strong π–π stacking tendency between G sheets, dispersant agents such as surfactants or polymers are required to attain stable and homogenous dispersions in liquid media. In the present project, the effectiveness of resveratrol (RV), a fluorescent bioactive compound with antioxidant activity, as a dispersing agent for G in aqueous solutions was assessed. The interaction between G and RV was investigated via absorbance, fluorescence and Raman measurements. Dispersions were prepared via bath sonication, followed by probe ultrasonication and centrifugation, though the two last stages have little effect on the dispersion quality. The addition of G causes a quenching on RV fluorescence, and its magnitude raises with increasing G concentration, being the effect stronger up to 10 mg L-1. The change in the centrifugation speed and time have hardly influence on the RV fluorescence in the presence of G. The RV content remaining in the bulk solution after G dispersion, measured via UV–Vis absorption, decreases linearly with increasing G concentration. RV can effectively disperse all the G present in the sample up to 10 mg L-1; at higher concentrations, the dispersing ability slightly decreases, and the G content is distributed between the bulk solution and the centrifuged residue. Besides, the fluorescence of RV dispersed in G is much higher in methanol than in an aqueous medium. TEM analysis confirms the good exfoliation of G upon ultrasonication in RV solutions and indicates that the layer thickness depends on the G/RV ratio. The results of this study could open new perspectives for using natural products like resveratrol as biocompatible and efficient dispersing agents of G to be used in numerous applications, especially in biomedicine.e-cienciaDatosDíez Pascual, Ana María2024info:eu-repo/semantics/datasetinfo:eu-repo/semantics/publishedVersionimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegimage/jpegtext/plaintext/plaintext/plainhttps://doi.org/10.21950/2QQJ3Jreponame:e-cienciaDatos, Repositorio de Datos del Consorcio Madroñoinstname:Consorcio MadroñoIndeterminadoinfo:eu-repo/grantAgreement/Ministerio de Ciencia, Innovación y Universidades/PGC2018-093375-B-I00/info:eu-repo/grantAgreement/Comunidad de Madrid/EPU-INV%2F2020%2F012/info:eu-repo/semantics/openAccessCC-BY-NC-ND-4.0doi:10.21950/2QQJ3J2026-05-29T06:25:11Z
dc.title.none.fl_str_mv Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
title Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
spellingShingle Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
Sainz-Urruela, Carlos
Chemistry
Resveratrol
Graphene
Dispersion
Fluorescence
title_short Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
title_full Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
title_fullStr Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
title_full_unstemmed Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
title_sort Bioactive trans-resveratrol as dispersant of graphene in water. Molecular interactions
dc.creator.none.fl_str_mv Sainz-Urruela, Carlos
Vera-López, Soledad
Diez-Pascual, Ana María
San Andrés, María Paz
author Sainz-Urruela, Carlos
author_facet Sainz-Urruela, Carlos
Vera-López, Soledad
Diez-Pascual, Ana María
San Andrés, María Paz
author_role author
author2 Vera-López, Soledad
Diez-Pascual, Ana María
San Andrés, María Paz
author2_role author
author
author
dc.contributor.none.fl_str_mv Díez Pascual, Ana María
dc.subject.none.fl_str_mv Chemistry
Resveratrol
Graphene
Dispersion
Fluorescence
topic Chemistry
Resveratrol
Graphene
Dispersion
Fluorescence
description Currently, the preparation of high-quality graphene (G) dispersions is crucial due to the increasing demand for this nanomaterial in a wide range of industries. However, given the strong π–π stacking tendency between G sheets, dispersant agents such as surfactants or polymers are required to attain stable and homogenous dispersions in liquid media. In the present project, the effectiveness of resveratrol (RV), a fluorescent bioactive compound with antioxidant activity, as a dispersing agent for G in aqueous solutions was assessed. The interaction between G and RV was investigated via absorbance, fluorescence and Raman measurements. Dispersions were prepared via bath sonication, followed by probe ultrasonication and centrifugation, though the two last stages have little effect on the dispersion quality. The addition of G causes a quenching on RV fluorescence, and its magnitude raises with increasing G concentration, being the effect stronger up to 10 mg L-1. The change in the centrifugation speed and time have hardly influence on the RV fluorescence in the presence of G. The RV content remaining in the bulk solution after G dispersion, measured via UV–Vis absorption, decreases linearly with increasing G concentration. RV can effectively disperse all the G present in the sample up to 10 mg L-1; at higher concentrations, the dispersing ability slightly decreases, and the G content is distributed between the bulk solution and the centrifuged residue. Besides, the fluorescence of RV dispersed in G is much higher in methanol than in an aqueous medium. TEM analysis confirms the good exfoliation of G upon ultrasonication in RV solutions and indicates that the layer thickness depends on the G/RV ratio. The results of this study could open new perspectives for using natural products like resveratrol as biocompatible and efficient dispersing agents of G to be used in numerous applications, especially in biomedicine.
publishDate 2024
dc.date.none.fl_str_mv 2024
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dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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