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MnMOF74-ChemRxiv.pdf (3.98 MB)

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

preprint
submitted on 22.03.2021, 11:04 and posted on 23.03.2021, 12:00 by Hidetsugu Shiozawa, Zuzana Melnikova, Zdeněk Bastl, Herwig Peterlik, Martin Kalbac, Otakar Frank
We report electrochromism of M-MOF-74 (M=Mg, Mn, Co or Zn), a honeycomb nano-framework in which hexagonally packed one-dimensional
arrays of metal cations are coordinated with 2,5-Dihydroxyterephthalic 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. Excellent adhesion of the MOFs to glass allows synthesis of quality thin films to be implemented into electrochromic devices that exhibit promising colour contrast and durability.

History

Email Address of Submitting Author

hidetsugu.shiozawa@univie.ac.at

Institution

University of Vienna

Country

Austria

ORCID For Submitting Author

0000-0003-0603-2508

Declaration of Conflict of Interest

No conflict of interest

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