The newly prepared title donor 1 has a very long C-C bond [1.635(2) Å], which was readily cleaved upon oxidation to give dication 2 2+ containing two 10-methylacridinium chromophores. Colorless donor 1 (Eox +0.18 V) is non-fluorescent whereas orange dication 2 2+ (Ered -0.27 V) emits strong green fluorescence, so that, this pair can be considered as a novel redox switch for fluorescence with high electrochemical bistability.
All Science Journal Classification (ASJC) codes
- Drug Discovery
- Organic Chemistry