Abstract

The first heteropoly blue-embedded metal–organic framework (MOF) compound [Cu3(BTC)2(H2O)3]4[SiW11MoVO40](C4H12N)5·30H2O (BTC = 1,3,5-benzenetricarboxylate) has been synthesized by a one-pot hydrothermal reaction method. The heteropoly blue-based MOFs were characterized by elemental analysis, single-crystal X-ray diffraction, IR spectroscopy, diffuse reflectance UV-vis spectroscopy, magnetic measurement, and thermal gravimetric analysis. Both the diffuse reflectance UV-vis spectra and magnetic study demonstrate that the reduction state of Mo(V) was still retained in the heteropoly blue-based MOFs. The performance in humidity-dependent proton conduction of the compound was also investigated, showing enhanced proton conductivity with increasing humidity; this may find potential applications in proton conductors.

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