Photo- and Thermoresponsive Supramolecular Assemblies: Reversible Photorelease of K+ Ions and Constitutional Dynamics

Authors

  • Ghislaine Vantomme,

    1. Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 Allée Gaspard Monge, 67000 Strasbourg (France)
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  • Prof. Jean-Marie Lehn

    Corresponding author
    1. Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 Allée Gaspard Monge, 67000 Strasbourg (France)
    • Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, 8 Allée Gaspard Monge, 67000 Strasbourg (France)
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  • G.V. thanks le Ministère de l’Enseignement Supérieure et de la Recherche for a doctoral fellowship. We thank Lydia Brelot and Corinne Bailly for crystal-structure determination and Prof. Christopher Hunter for the program used to determine binding constants. We also thank the ANR (2010 BLAN-717-1 project) and the ERC (Advanced Research Grant SUPRADAPT 290585) for financial support.

Abstract

original image

Freed at the flick of a photoswitch: An acyl hydrazone forms supramolecular assemblies upon the binding of specific salts, such as potassium thiocyanate. This process presents cation and anion selectivity as well as thermo- and photoreversibility (see scheme). In particular, the system displays photorelease of potassium cations and undergoes dynamic component exchange in the acyl hydrazone.

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