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Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles

Ferrous core-shell nanoparticles consisting of a magnetic γ-Fe(2)O(3) multi-nanoparticle core and an outer silica shell have been synthesized and covalently functionalized with Rhodamine B (RhB) fluorescent molecules (γ-Fe(2)O(3)/SiO(2)/RhB NPs). The resulting γ-Fe(2)O(3)/SiO(2)/RhB NPs were integra...

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Autores principales: Petropoulou, Afroditi, Kralj, Slavko, Karagiorgis, Xenofon, Savva, Ioanna, Loizides, Emilios, Panagi, Myrofora, Krasia-Christoforou, Theodora, Riziotis, Christos
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962333/
https://www.ncbi.nlm.nih.gov/pubmed/31941969
http://dx.doi.org/10.1038/s41598-019-57291-0
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author Petropoulou, Afroditi
Kralj, Slavko
Karagiorgis, Xenofon
Savva, Ioanna
Loizides, Emilios
Panagi, Myrofora
Krasia-Christoforou, Theodora
Riziotis, Christos
author_facet Petropoulou, Afroditi
Kralj, Slavko
Karagiorgis, Xenofon
Savva, Ioanna
Loizides, Emilios
Panagi, Myrofora
Krasia-Christoforou, Theodora
Riziotis, Christos
author_sort Petropoulou, Afroditi
collection PubMed
description Ferrous core-shell nanoparticles consisting of a magnetic γ-Fe(2)O(3) multi-nanoparticle core and an outer silica shell have been synthesized and covalently functionalized with Rhodamine B (RhB) fluorescent molecules (γ-Fe(2)O(3)/SiO(2)/RhB NPs). The resulting γ-Fe(2)O(3)/SiO(2)/RhB NPs were integrated with a renewable and naturally-abundant cellulose derivative (i.e. cellulose acetate, CA) that was processed in the form of electrospun fibers to yield multifunctional fluorescent fibrous nanocomposites. The encapsulation of the nanoparticles within the fibers and the covalent anchoring of the RhB fluorophore onto the nanoparticle surfaces prevented the fluorophore’s leakage from the fibrous mat, enabling thus stable fluorescence-based operation of the developed materials. These materials were further evaluated as dual fluorescent sensors (i.e. ammonia gas and pH sensors), demonstrating consistent response for very high ammonia concentrations (up to 12000 ppm) and fast and linear response in both alkaline and acidic environments. The superparamagnetic nature of embedded nanoparticles provides means of electrospun fibers morphology control by magnetic field-assisted processes and additional means of electromagnetic-based manipulation making possible their use in a wide range of sensing applications.
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spelling pubmed-69623332020-01-23 Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles Petropoulou, Afroditi Kralj, Slavko Karagiorgis, Xenofon Savva, Ioanna Loizides, Emilios Panagi, Myrofora Krasia-Christoforou, Theodora Riziotis, Christos Sci Rep Article Ferrous core-shell nanoparticles consisting of a magnetic γ-Fe(2)O(3) multi-nanoparticle core and an outer silica shell have been synthesized and covalently functionalized with Rhodamine B (RhB) fluorescent molecules (γ-Fe(2)O(3)/SiO(2)/RhB NPs). The resulting γ-Fe(2)O(3)/SiO(2)/RhB NPs were integrated with a renewable and naturally-abundant cellulose derivative (i.e. cellulose acetate, CA) that was processed in the form of electrospun fibers to yield multifunctional fluorescent fibrous nanocomposites. The encapsulation of the nanoparticles within the fibers and the covalent anchoring of the RhB fluorophore onto the nanoparticle surfaces prevented the fluorophore’s leakage from the fibrous mat, enabling thus stable fluorescence-based operation of the developed materials. These materials were further evaluated as dual fluorescent sensors (i.e. ammonia gas and pH sensors), demonstrating consistent response for very high ammonia concentrations (up to 12000 ppm) and fast and linear response in both alkaline and acidic environments. The superparamagnetic nature of embedded nanoparticles provides means of electrospun fibers morphology control by magnetic field-assisted processes and additional means of electromagnetic-based manipulation making possible their use in a wide range of sensing applications. Nature Publishing Group UK 2020-01-15 /pmc/articles/PMC6962333/ /pubmed/31941969 http://dx.doi.org/10.1038/s41598-019-57291-0 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Petropoulou, Afroditi
Kralj, Slavko
Karagiorgis, Xenofon
Savva, Ioanna
Loizides, Emilios
Panagi, Myrofora
Krasia-Christoforou, Theodora
Riziotis, Christos
Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title_full Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title_fullStr Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title_full_unstemmed Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title_short Multifunctional Gas and pH Fluorescent Sensors Based on Cellulose Acetate Electrospun Fibers Decorated with Rhodamine B-Functionalised Core-Shell Ferrous Nanoparticles
title_sort multifunctional gas and ph fluorescent sensors based on cellulose acetate electrospun fibers decorated with rhodamine b-functionalised core-shell ferrous nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6962333/
https://www.ncbi.nlm.nih.gov/pubmed/31941969
http://dx.doi.org/10.1038/s41598-019-57291-0
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