Fastest Thermal Isomerization of an Azobenzene for Nanosecond Photoswitching Applications under Physiological Conditions

Authors

  • Dr. Jaume Garcia-Amorós,

    1. Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona (Spain)
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  • Mireia Díaz-Lobo,

    1. Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona (Spain)
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  • Prof. Dr. Santi Nonell,

    1. Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramón Llull, Via Augusta 390, 08019 Barcelona (Spain)
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  • Prof. Dr. Dolores Velasco

    Corresponding author
    1. Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona (Spain)
    • Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona (Spain)
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  • Financial support for this research was obtained from the Ministerio de Ciencia e Innovación (Spain) through grants CTQ2009-13797 and CTQ2012-36074. M.D.-L. is grateful for a doctoral grant (BES-2009-029354) from the Ministerio de Ciencia e Innovación (Spain).

Abstract

original image

When speed is of the essence: After photoisomerization to its metastable cis form, an azo dye must undergo fast thermal isomerization back to the trans form to be suitable for real-time information transmission. The azopyrimidine shown has a relaxation time (τ) of just 40 ns under physiological conditions, as well as high biocompatibility, as determined by Escherichia coli growth in its presence (see picture).

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