DOI: 10.1002/smll.202304057 ISSN: 1613-6810

A New Family of Layered Metal‐Organic Semiconductors: Cu/V‐Organophosphonates

Patrik Tholen, Lukas Wagner, Jean G. A. Ruthes, Konrad Siemensmeyer, Thi Hai Yen Beglau, Dominik Muth, Yunus Zorlu, Mustafa Okutan, Jan Christoph Goldschmidt, Christoph Janiak, Volker Presser, Özgür Yavuzçetin, Gündoğ Yücesan
  • Biomaterials
  • Biotechnology
  • General Materials Science
  • General Chemistry

Abstract

Herein, we report the design and synthesis of a layered redox‐active, antiferromagnetic metal organic semiconductor crystals with the chemical formula [Cu(H2O)2V(µ‐O)(PPA)2] (where PPA is phenylphosphonate). The crystal structure of [Cu(H2O)2V(µ‐O)(PPA)2] shows that the metal phosphonate layers are separated by phenyl groups of the phenyl phosphonate linker. Tauc plotting of diffuse reflectance spectra indicates that [Cu(H2O)2V(µ‐O)(PPA)2] has an indirect band gap of 2.19 eV. Photoluminescence (PL) spectra indicate a complex landscape of energy states with PL peaks at 1.8 and 2.2 eV. [Cu(H2O)2V(µ‐O)(PPA)2] has estimated hybrid ionic and electronic conductivity values between 0.13 and 0.6 S m−1. Temperature‐dependent magnetization measurements show that [Cu(H2O)2V(µ‐O)(PPA)2] exhibits short range antiferromagnetic order between Cu(II) and V(IV) ions. [Cu(H2O)2V(µ‐O)(PPA)2] is also photoluminescent with photoluminescence quantum yield of 0.02%. [Cu(H2O)2V(µ‐O)(PPA)2] shows high electrochemical, and thermal stability.

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