Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 26, Issue 37, Pages 8226-8229Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202001213
Keywords
luminescence; organophosphorus; polycyclic aromatic hydrocarbons; radical; redox systems
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Funding
- Ministere de la Recherche et de l'Enseignement Superieur
- CNRS
- Region Bretagne
- French National Research Agency (ANR Heterographene) [ANR-16-CE05-0003-01]
- Agence Nationale de la Recherche (ANR) [ANR-16-CE05-0003] Funding Source: Agence Nationale de la Recherche (ANR)
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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 pi-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.
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