The Ugi Four-Component Reaction Route to Photoinducible Electron-Transfer Systems

Authors

  • Sarah Bay,

    1. Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf (Germany)
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    • These authors contributed equally to this work.

  • Dipl.-Chem. Torben Villnow,

    1. Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf (Germany)
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    • These authors contributed equally to this work.

  • Dipl.-Phys. Gerald Ryseck,

    1. Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf (Germany)
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  • Dr. Vidisha Rai-Constapel,

    1. Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf (Germany)
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  • Prof. Dr. Peter Gilch,

    1. Institut für Physikalische Chemie, Heinrich-Heine-Universität Düsseldorf (Germany)
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  • Prof. Dr. Thomas J. J. Müller

    Corresponding author
    1. Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf (Germany)
    • Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf (Germany)
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Abstract

original image

Easy as pi: The Ugi four-component reaction (4CR) gives access to a functional π system consisting of an electron donor and an electron acceptor (see figure; PT=phenothiazine, AQ=9,10-anthraquinone). Intramolecular photoinduced electron transfer generates charge-separated diradical ion pairs originating from the singlet and triplet excited states. Charge separation in the triplet species persists for more than 2 ns.

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