Multi-Stage Redox Systems Based on Dicationic P-Containing Polycyclic Aromatic Hydrocarbons

2019 
In this communication, we report the straightforwardsynthesis of unprecedented electron-acceptors based on dicationic P-containing PAHs (Polycyclic Aromatic Hydrocarbons) where 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/theoretical approach.Finally, (spectro)-electrochemical studies prove that thesecompounds possess three redox states and EPR studies confirms the in situ formation of an organic radical.
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