Humidity-Sensitive Magnet Composed of a Cyano-Bridged CoII-NbIV Dimetallic Assembly
Humidity-Sensitive Magnet Composed of a Cyano-Bridged CoII-NbIV Dimetallic Assembly
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DOI：
10.1002/ejic.201000720
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发表时间：
2010-09-01
影响因子：
2.3
通讯作者：
Ohkoshi, Shin-ichi
中科院分区：
文献类型：
--
作者：
Imoto, Kenta;Takahashi, Daisuke;Ohkoshi, Shin-ichi
由金属组装配合物构成的纳米多孔磁性材料有望表现出化学敏感性。在这项工作中，我们在高湿度区域观察到一种新型的基于八氰合铌酸钴的磁体中，湿度诱导的铁磁性和反铁磁性之间的可逆变化。这种湿度响应是由间隙位置中非配位水（所谓的沸石水）分子的吸附和解吸引起的。这种现象是通过基于八氰基金属酸盐的磁体的结构灵活性实现的。
Nanoporous magnetic materials composed of metal-assembled complexes are expected to exhibit chemical sensitivity. In this work, we observed a humidity-induced reversible change between ferromagnetism and antiferromagnetism in a new type of a cobalt octacyanoniobate based magnet in the high-humidity region. This humidity response is caused by the adsorption and desorption of non-coordinated water (so-called zeolitic water) molecules in the interstitial site. Such a phenomenon is achieved by the structural flexibility of an octacyanometalate-based magnet.