Progress of Organic-Inorganic Hybrid Complexes Having NovelSuccessive Physical Properties Coupled with Photon-Spin-Charge

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We have developed various organic-inorganic hybrid complexes having successive physical properties coupled with photon-spin-charge. The topics are as follows. (1) We synthesized Ph4N[MnIIFeIII(C2O3S)3] exhibiting a rapid spin equilibrium (τ < 10-7 s) between the high-spin and low-spin states at the FeIIIO3S3 site. Owing to the fluctuation of internal magnetic field caused by the rapid spin equilibrium, Ph4N[MnIIFeIII(mto)3] undergoes the successive magnetic phase transitions at 30 K and 23 K. (2)We synthesized a pH-sensitive spin-crossover complex film consisting of [FeII(diAMsar)] (diAMsar =1,8-diaminosarcophagine) and ion-exchange polymer, Nafion. By using this pH-sensitive spin-crossover complex film, we succeeded in visually detecting the proton flow in Nafion