The synthesis of various acridine-quinones is reported. The fluorescence-quenching quinone moiety has been incorporated into various acridine molecules, each having a different functionality at the ninth position of the acridine ring. It is envisaged that the quenching nature of the quinone will lead to the fluorescent properties of the acridine being controlled in a way similar to turning on a light switch.
Litchfield, VJ., Smith, RB., Franklin, A., & Davis, J. (2008). Synthesis of acridine-quinone systems - A potential electrochemical fluorescent switch. Synthetic Communications, 38(20), 3447-3455. https://doi.org/10.1080/00397910802154261