Multiple Switching and Photogated Electrochemiluminescence Expressed by a Dihydroazulene/Boron Dipyrromethene Dyad


  • This research was supported by the German Research Foundation (DFG), the German National Academic Foundation (C.T.), and BAM's PhD program (H.R.). This work is part of the Graduate College “Sensory Photoreceptors in Natural and Artificial Systems” supportedby the DFG (GRK 640, University of Regensburg).


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Optical control of the photo- and electrochemiluminescence of a brightly fluorescent reporter group is possible by switching between the photochromic units of dyads 1 a and 1 b. Irradiation, that is, writing in information, with UV light converts the highly luminescent dihydroazulene 1 a into the weakly emissive vinylheptafulvene 1 b. Readout of the system can be performed by either electrochemically generated or photogenerated luminescence.