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Article Dans Une Revue Chemistry - A European Journal Année : 2020

Multi-stage redox systems based on Dicationic P-containing Polycyclic Aromatic Hydrocarbons

Résumé

We report the straightforward synthesis of unprecedented electron-acceptors based on dicationic P-containing PAHs (Polycyclic Aromatic Hydrocarbons) based on copper mediated radical approach. In these systems, two phosphoniums are connected through various PAHs backbones. The impact of π-extension on both the optical and redox properties is investigated using a joint experimental (UV/Vis absorption, fluorescence and cyclic voltammetry) and theoretical approach (TD-DFT calculations). Finally, (spectro)-electrochemical studies prove that these compounds possess three redox states and EPR studies confirm the in situ formation of an organic radical delocalized on the PAH backbone.

Domaines

Chimie organique
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Dates et versions

hal-02505707 , version 1 (11-03-2020)

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Thomas Delouche, Antoine Vacher, Elsa Caytan, Thierry Roisnel, Boris Le Guennic, et al.. Multi-stage redox systems based on Dicationic P-containing Polycyclic Aromatic Hydrocarbons. Chemistry - A European Journal, 2020, 26 (37), pp.8226-8229. ⟨10.1002/chem.202001213⟩. ⟨hal-02505707⟩
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