Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Considerations for spectroscopy of liquid-exfoliated 2D materials: Emerging photoluminescence of N-methyl-2-pyrrolidone
Δημιουργός/Συγγραφέας:	Ogilvie S.P. Large M.J. Fratta G. Meloni M. Canton-Vitoria R. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Massuyeau F. Ewels C.P. King A.A.K. Dalton A.B.
Εκδότης:	Nature Publishing Group
Ημερομηνία:	2017
Γλώσσα:	Αγγλικά
ISSN:	2045-2322
DOI:	10.1038/s41598-017-17123-5
Άλλο:	PubMed ID: 29196735
Περίληψη:	N-methyl-2-pyrrolidone (NMP) has been shown to be the most effective solvent for liquid phase exfoliation and dispersion of a range of 2D materials including graphene, molybdenum disulphide (MoS2) and black phosphorus. However, NMP is also known to be susceptible to sonochemical degradation during exfoliation. We report that this degradation gives rise to strong visible photoluminescence of NMP. Sonochemical modification is shown to influence exfoliation of layered materials in NMP and the optical absorbance of the solvent in the dispersion. The emerging optical properties of the degraded solvent present challenges for spectroscopy of nanomaterial dispersions; most notably the possibility of observing solvent photoluminescence in the spectra of 2D materials such as MoS2, highlighting the need for stable solvents and exfoliation processes to minimise the influence of solvent degradation on the properties of liquid-exfoliated 2D materials.
Τίτλος πηγής δημοσίευσης:	Scientific Reports
Τόμος/Κεφάλαιο:	7
Τεύχος:	1
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2017 The Author(s).
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Gold, Green
Σημειώσεις:	Horizon 2020 Framework Programme, H2020: 642742 This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant agreement No 642742.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο