Orthogonal arrangement of photochromic moieties by coordination chemistry and their application as molecular memory devises

本课题旨在构建具有光致变色基团正交排列的金属配合物及其在偏振光双响应分子记忆器件中的应用。采用二芳乙烯（DAE）衍生物作为光致变色基团，在开放和封闭形式之间表现出可逆的光环化。制备了具有DAE片段的双齿配体，并通过双齿配体与铁（II）离子反应合成了具有DAE的新型铁（II）配合物。铁（II）配合物表现出热铁（II）自旋跃迁和光环化反应。此外，光照射使配合物的磁性在顺磁性和反磁性之间发生改变。

This research project aimed at the construction of metal complexes with orthogonal arrangements of photochromic moieties and their applications as molecular memory devices with dual response to the polarized light. Diarylethene (DAE) derivatives were employed as the photochromic moiety, which exhibits reversible photo-cyclization between open- and closed-forms. A bidentate ligand with the DAE moiety was prepared and a novel iron(II) complex with DAE was synthesized by a reaction of the bidentate ligand with iron(II) ions. The iron(II) complex showed both thermal iron(II) spin transition and photo-cyclization reaction. In addition, the light irradiation to the complex altered the magnetism of the complex between paramagnetic and diamagnetic states.