Spectroscopic Insights into Carbon Dot Systems Article Swipe

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Marcello Righetto , Alberto Privitera , Ilaria Fortunati , Dario Mosconi , Mirco Zerbetto , Maria Lucia Curri , Michela Corricelli , Alessandro Moretto , Stefano Agnoli , Lorenzo Franco , Renato Bozio , Camilla Ferrante ·

YOU? · · 2017 · Open Access · · DOI: https://doi.org/10.1021/acs.jpclett.7b00794

The controversial nature of the fluorescent properties of carbon dots (CDs), ascribed either to surface states or to small molecules adsorbed onto the carbon nanostructures, is an unresolved issue. To date, an accurate picture of CDs and an exhaustive structure-property correlation are still lacking. Using two unconventional spectroscopic techniques, fluorescence correlation spectroscopy (FCS) and time-resolved electron paramagnetic resonance (TREPR), we contribute to fill this gap. Although electron micrographs indicate the presence of carbon cores, FCS reveals that the emission properties of CDs are based neither on those cores nor on molecular species linked to them, but rather on free molecules. TREPR provides deeper insights into the structure of carbon cores, where C sp² domains are embedded within C sp³ scaffolds. FCS and TREPR prove to be powerful techniques, characterizing CDs as inherently heterogeneous systems, providing insights into the nature of such systems and paving the way to standardization of these nanomaterials.

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Carbon fibers Nanotechnology Materials science Composite number Composite material

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Type: article
Language: en
Landing Page: https://doi.org/10.1021/acs.jpclett.7b00794
OA Status: green
Cited By: 126
References: 58
Related Works: 10
OpenAlex ID: https://openalex.org/W2611464409

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DOI: https://doi.org/10.1021/acs.jpclett.7b00794

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Title: Spectroscopic Insights into Carbon Dot Systems

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Language: en

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Publication year: 2017

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Publication date: 2017-05-04

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Authors: Marcello Righetto, Alberto Privitera, Ilaria Fortunati, Dario Mosconi, Mirco Zerbetto, Maria Lucia Curri, Michela Corricelli, Alessandro Moretto, Stefano Agnoli, Lorenzo Franco, Renato Bozio, Camilla Ferrante

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Landing page: https://doi.org/10.1021/acs.jpclett.7b00794

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OA URL: https://hdl.handle.net/11586/263012

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Concepts: Carbon fibers, Nanotechnology, Materials science, Composite number, Composite material

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Cited by: 126

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