Tholen, P.; Wagner, L.; Ruthes, J.G.A.; Siemensmeyer, K.; Beglau, T.H.Y.; Muth, D.; Zorlu, Y.; Okutan, M.; Goldschmidt, J.C.; Janiak, C.; Presser, V.; Yavuzçetin, Ö.; Yücesan, G.: A New Family of Layered Metal-Organic Semiconductors: Cu/V-Organophosphonates. Small 19 (2023), p. 2304057/1-8
10.1002/smll.202304057
Open Access Version
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. 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.