Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Multifunctional gas and pH fluorescent sensors based on cellulose acetate electrospun fibers decorated with rhodamine B-functionalised core-shell rerrous nanoparticles
Δημιουργός/Συγγραφέας:	Petropoulou, Afroditi Kralj, Slavko Karagiorgis, Xenofon Savva, Ioanna Loizides, Emilios Panagi, Myrofora Krasia-Christoforou, Theodora [EL] Ριζιώτης, Χρήστος Δ.[EN] Riziotis, Christos
Εκδότης:	Springer Nature
Ημερομηνία:	2020-01-15
Γλώσσα:	Αγγλικά
ISSN:	2045-2322
DOI:	10.1038/s41598-019-57291-0
Άλλο:	31941969
Περίληψη:	Ferrous core-shell nanoparticles consisting of a magnetic γ-Fe2O3 multi-nanoparticle core and an outer silica shell have been synthesized and covalently functionalized with Rhodamine B (RhB) fluorescent molecules (γ-Fe2O3/SiO2/RhB NPs). The resulting γ-Fe2O3/SiO2/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.
Τίτλος πηγής δημοσίευσης:	Scientific reports
Τόμος/Κεφάλαιο:	10
Σελίδες:	367
Θεματική Κατηγορία:	[EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Φυσική[EN] Physics
Λέξεις-Κλειδιά:	Ammonia Cellulose Electromagnetic Phenomena Hydrogen-Ion Concentration Materials Testing Microscopy, Fluorescence Fluorescent Dyes Molecular Probe Techniques Nanoparticles Rhodamines
Κάτοχος πνευματικών δικαιωμάτων:	Copyright © 2020 by the authors
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.nature.com/articles/s41598-019-57291-0
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://www.nature.com/srep/
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο