From Red to Blue: Self-Enhanced Multicolor Electrochemiluminescence by Competitive Intra- vs Inter-molecular Electron-transfer Processes

Bifunctional ECL features have been integrated in a single molecular system based on a red-emitting helicene dye. The coreactant and the luminescent functions are decoupled and are activated either separately or simultaneously. Self-enhanced multicolor ECL emission was obtained in aqueous media by competitive highly exergonic intra- and inter-molecular electron-transfer reactions.