Light-driven anisotropy of 2D metal-organic framework single crystal for repeatable optical modulation

Yuliya A. Kenzhebayeva, Nikita K. Kulachenkov, Sergey S. Rzhevskiy, Pavel A. Slepukhin, Vladimir V. Shilovskikh, Anastasiia Efimova, Pavel Alekseevskiy, Gennady Y. Gor, Alina Emelianova, Sergei Shipilovskikh, Irina D. Yushina, Alexander Krylov, Dmitry I. Pavlov, Vladimir P. Fedin, Andrei S. Potapov, Valentin A. Milichko

Research output: Contribution to journalArticlepeer-review

Abstract

Structural transformations of metal-organic frameworks (MOFs) go through a complex energy landscape with multiple intermediate states. Although the transformations allow controlling the functional properties of the MOFs, an imbalance between MOF flexibility and rigidity sets a fundamental barrier to achieving fast and multiple transformations. Here, we study the stimuli-responsive structural transformation in a 2D MOF assembled from paddle-wheel secondary building units joined by a semi-flexible organic ligand with 1,2,4-triazole and carboxylate groups with a rigid adamantane cage between them. The structure results in a distinctive combination of MOF flexibility and rigidity, thus, facilitating a continuous transformation driven by laser light. We reveal the laser-induced anisotropic thermal expansion nature of such transformation, initiating optical changes of the 2D MOF. The latter is utilized for fast and highly repeatable optical modulation of over 10,000 cycles. The endurance of such a 2D MOF-based optical modulator during 1 year of storage at ambient conditions paves the way to design tunable and robust MOFs for diverse applications.

Original languageEnglish (US)
Article number48
JournalCommunications Materials
Volume5
Issue number1
DOIs
StatePublished - Dec 2024

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials

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