We report for the first time that irradiation of four different citric acid-derived carbon dots (CDs), in the absence of any other redox mediators, promotes an organic reaction. In this proof-of-concept study methylene-oxygen bond reductive photocleavage in N-methyl-4-picolinium esters is demonstrated. Cyclic voltammetry and UV-Vis spectra of the CDs and of the esters indicate that photocleavage reactivity correlates with the redox properties and the relative energies expressed in the Fermi scale. A photo-fragmentation mechanism is proposed. This study offers a new possibility to employ inexpensive and readily available CDs to promote photo-organic reactions.
Autori: | Perosa, Alvise (Corresponding) |
Data di pubblicazione: | 2020 |
Titolo: | Carbon dots as photocatalysts for organic synthesis: metal-free methylene–oxygen-bond photocleavage |
Rivista: | GREEN CHEMISTRY |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/C9GC03811F |
Volume: | 22 |
Appare nelle tipologie: | 2.1 Articolo su rivista |
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2020_GC carbon dots photocatalysis.pdf | Documento in Post-print | Accesso chiuso-personale | Riservato |