N‐type fullerene‐carbon dots: synthesis and electrochemical and photophysical properties
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2023
Authors
Andrés Ferrer‐Ruiz
Juan Manuel Moreno‐Naranjo
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Wiley
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A. Ferrer-Ruiz, J. M. Moreno-Naranjo, L. Rodríguez-Pérez, S. Ramírez-Barroso, N. Martín, M. Á. Herranz, Chem. Eur. J. 2024, 30, e202302850. https://doi.org/10.1002/chem.202302850
Abstract
The covalent incorporation of C60 and C70 derivatives of the well-known n-type organic semiconductor PCBM ([6,6]-phenyl-C61-butyric acid methyl ester) onto carbon dots (CD) is described. Morphological and structural characterization reveal combined features of both pristine starting materials (CD and PCBM). Electrochemical investigations evidenced the existence of additional reduction processes to that of CD or PCBM precursors, showing rich electron-acceptor capabilities, with multistep processes in an affordable and narrow electrochemical window (ca. 1.5 V). Electronic communication in the obtained nanoconjugated species were derived from steady-state absorption and emission spectroscopies, which showed bathochromically shifted absorptions and emissions well entering the red region. Finally, the lower fluorescence quantum yield of CD-PCBM nanoconjugates, compared with CD, and the fast decay of the observed emission of CD, support the existence of an electronic communication between both CD and PCBM units in the excited state.
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2023 Acuerdo transformativo financiado por la CRUE