Electrochromic 2,5-Dihydroxyterephthalic Acid Linker in Metal−Organic Frameworks

Hidetsugu Shiozawa (Corresponding author), Zuzana Melnikova, Zdeněk Bastl, Herwig Peterlik, Martin Kalbáč, Otakar Frank

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Metal–organic frameworks (MOFs) are diverse in color owing to a large variety of molecular structures. Herein, electrochromism of M-MOF-74 (M = Mg, Mn, Co or Zn) is reported, which is a honeycomb nano-framework in which hexagonally packed 1D arrays of metal cations are coordinated with 2,5-dihydroxyterephthalic (dhtp) acid linker. Raman spectroscopy upon electrochemical doping combined with density functional theory calculations reveals redox reactions of the linker while the metal cations stay divalent as probed by X-ray photoemission spectroscopy (XPS). Excellent adhesion of the MOFs to glass allows the synthesis of quality thin films to be implemented into electrochromic devices that exhibit promising color contrast and durability.
Original languageEnglish
Article number2100219
Number of pages7
JournalAdvanced Photonics Research
Issue number4
Early online date7 Feb 2022
Publication statusPublished - Apr 2022

Austrian Fields of Science 2012

  • 103040 Photonics
  • 103018 Materials physics

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