Electrogenerated Chemiluminescence and Proton-Dependent Switching of Fluorescence: Functionalized Difluoroboradiaza-s-indacenes


  • This work was supported by the Bundesministerium für Bildung und Forschung (03N1004C6) and the Bayerische Staatsregierung (Sonder-Programm für Infrastrukturmassnahmen). J. B. is grateful to Prof. Dr. K.-J. Range for financial support.

  • Dedicated to Fabian Gerson


original image

Suitable for light-emitting diodes or as pH sensors, the difluoroboradiaza-s-indacenes of type 1 luminesce after electrochemical excitation (X = H) or show on/off switching of fluorescence sensitivity depending on pH (X = NMe2). R1 = Me, H, CO2Et; R2 = Et, H; R3 = Me.