A novel molecular switch, 7-(N,N-diethylamino)-2-oxo2H-chromen-4-yl ferrocene carboxylate (FCC), was synthesized and fully characterized by 1H NMR,13C NMR, and HRMS. Taking advantage of the properties of ferrocene as an electron donor active unit and the coumarin as a fluorescent unit, the dyad FCC shows a fast and reversible redox-switchable fluorescence emission. In sharp contrast to most photoluminescent chromophores, FCC has a unique enhanced emission through aggregation. The change of electrochemical signals (CV and DPV) indicated that the ferrocene (Fc) unit of FCC could form inclusion complex with Me- β cyclodextrin (CD). This inclusion complex could further weaken the aggregation-induced emission (AIE) effect remarkably. This advance paves the way to introduce AIE property into molecular devices applications.
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