Infrared Light-Induced Charge Transfer of Prussian Blue Analogs K0.4Co1.3[Fe(CN)6]nH2O

In this paper, we irradiated K0.4Co1.3[Fe(CN)(6)]nH(2)O with infrared light ([KCoFePBA](IIP)) during the preparation process and compared them with normal preparations ([KCoFePBA](NP)). XRD results show that the samples conform to the Fm-3 m space group, and the lattice constants are 10.230 & Aring; ([KCoFePBA](NP)) and 10.225 & Aring; ([KCoFePBA](IIP)), respectively. According to the results of M & ouml;ssbauer spectroscopy, due to the induction of infrared light during the preparation process, part of the electrons are transferred from Co2+ to Fe3+, the paramagnetic Fe3+ (S = 1/2)-CN-Co2+ (S = 3/2) changes to the diamagnetic Fe2+ (S = 0)-CN-Co3+ (S = 0) by charge transfer. The magnetization measurement shows that the magnetization of [KCoFePBA](IIP) is significantly less than that of [KCoFePBA](NP). At 300 K, the theoretical magnetic moments of [KCoFePBA](NP) and [KCoFePBA](IIP) are 4.60 mu (B) and 4.37 mu (B), respectively. The difference in magnetism can be attributed to the charge transfer caused by infrared irradiation during the preparation process.

Automated summary

This study investigated the effect of infrared irradiation during the preparation process on the properties of [KCoFePBA] compound. XRD results showed minor changes in the lattice constants of the samples, while Mössbauer spectroscopy revealed charge transfer induced by infrared light, resulting in differences in magnetization.