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Reversible chromism of spiropyran in the cavity of a flexible coordination cage

Author

Listed:
  • Dipak Samanta

    (Weizmann Institute of Science)

  • Daria Galaktionova

    (University of Illinois at Chicago)

  • Julius Gemen

    (Weizmann Institute of Science)

  • Linda J. W. Shimon

    (Weizmann Institute of Science)

  • Yael Diskin-Posner

    (Weizmann Institute of Science)

  • Liat Avram

    (Weizmann Institute of Science)

  • Petr Král

    (University of Illinois at Chicago
    University of Illinois at Chicago
    University of Illinois at Chicago)

  • Rafal Klajn

    (Weizmann Institute of Science)

Abstract

Confining molecules to volumes only slightly larger than the molecules themselves can profoundly alter their properties. Molecular switches—entities that can be toggled between two or more forms upon exposure to an external stimulus—often require conformational freedom to isomerize. Therefore, placing these switches in confined spaces can render them non-operational. To preserve the switchability of these species under confinement, we work with a water-soluble coordination cage that is flexible enough to adapt its shape to the conformation of the encapsulated guest. We show that owing to its flexibility, the cage is not only capable of accommodating—and solubilizing in water—several light-responsive spiropyran-based molecular switches, but, more importantly, it also provides an environment suitable for the efficient, reversible photoisomerization of the bound guests. Our findings pave the way towards studying various molecular switching processes in confined environments.

Suggested Citation

  • Dipak Samanta & Daria Galaktionova & Julius Gemen & Linda J. W. Shimon & Yael Diskin-Posner & Liat Avram & Petr Král & Rafal Klajn, 2018. "Reversible chromism of spiropyran in the cavity of a flexible coordination cage," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-017-02715-6
    DOI: 10.1038/s41467-017-02715-6
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    Cited by:

    1. Joel Kuttruff & Marco Romanelli & Esteban Pedrueza-Villalmanzo & Jonas Allerbeck & Jacopo Fregoni & Valeria Saavedra-Becerril & Joakim Andréasson & Daniele Brida & Alexandre Dmitriev & Stefano Corni &, 2023. "Sub-picosecond collapse of molecular polaritons to pure molecular transition in plasmonic photoswitch-nanoantennas," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Grace C. Thaggard & Kyoung Chul Park & Jaewoong Lim & Buddhima K. P. Maldeni Kankanamalage & Johanna Haimerl & Gina R. Wilson & Margaret K. McBride & Kelly L. Forrester & Esther R. Adelson & Virginia , 2023. "Breaking the photoswitch speed limit," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Gobinda Das & Thirumurugan Prakasam & Nour Alkhatib & Rasha G. AbdulHalim & Falguni Chandra & Sudhir Kumar Sharma & Bikash Garai & Sabu Varghese & Matthew A. Addicoat & Florent Ravaux & Renu Pasricha , 2023. "Light-driven self-assembly of spiropyran-functionalized covalent organic framework," Nature Communications, Nature, vol. 14(1), pages 1-16, December.

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