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Erschienen in: Journal of Nanoparticle Research 7/2013

01.07.2013 | Research Paper

Carbon-dot organic surface modifier analysis by solution-state NMR spectroscopy

verfasst von: Aggelos Philippidis, Apostolos Spyros, Demetrios Anglos, Athanasios B. Bourlinos, Radek Zbořil, Emmanuel P. Giannelis

Erschienen in: Journal of Nanoparticle Research | Ausgabe 7/2013

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Abstract

Carbon dots (C-dots) represent a new class of carbon-based materials that were discovered recently and have drawn the interest of the scientific community, particularly because of their attractive optical properties and their potential as fluorescent sensors. Investigation of the chemical structure of C-dots is extremely important for correlating the surface modifier composition with C-dot optical properties and allow for structure–properties fine tuning. In this article, we report the structural analysis of the surface modifiers of three different types of C-dot nanoparticles (Cwax, Cws, and Csalt) by use of 1D- and 2D-high-resolution NMR spectroscopy in solution. We unambiguously verify that the structure of the modifier chains remains chemically unchanged during the passivation procedure, and confirm the covalent attachment of the modifiers to the nanoparticle core, which contributes no signal to the solution-state NMR spectra. To our knowledge, this is the first study confirming the full structural assignment of C-dot organic surface modifiers by use of solution NMR spectroscopy.

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Metadaten
Titel
Carbon-dot organic surface modifier analysis by solution-state NMR spectroscopy
verfasst von
Aggelos Philippidis
Apostolos Spyros
Demetrios Anglos
Athanasios B. Bourlinos
Radek Zbořil
Emmanuel P. Giannelis
Publikationsdatum
01.07.2013
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 7/2013
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-013-1777-0

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