An optical transistor is a device that is operated with photons instead of electrons as signal carriers. Recently we demonstrated that the key functionalities of an optical transistor, i.e gating and amplification can be accomplished by a molecular triad (figure left) that consists of a photochromic unit (dithienylcyclopentene, DCP) and two highly efficient fluorophores (perylenebisimide, PBI). While the DCP unit can be reversibly interconverted between two bistable forms by light, the fluorescence intensity of the PBI shows a strong modulation as a function of the state of the DCP (figure right). Hence light controls light. In the presentation we will discuss the performance of the triad from the viewpoint of an optical transistor.     Reference: M. P�rs, C. C. Hofmann, K. Willinger, P. Bauer, M. Thelakkat, J. K�hler, Angew. Chem. Int. Ed. 2011,   50,   DOI: 10.1002/anie.201104193 (online)

Light controls light: An organic optical transistor operated under ambient conditions

243rd National Meeting (2012)

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