金属有机钙钛矿中环扭转分子运动的冻结和巨大的介电异常。
Freezing of ring-puckering molecular motion and giant dielectric anomalies in metal-organic perovskites.
机构信息
Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui, Sekagaya-ku, Tokyo 156-8550, Japan.
出版信息
Chem Asian J. 2012 Dec;7(12):2786-90. doi: 10.1002/asia.201200673. Epub 2012 Sep 3.
Pucker up! Metal-organic perovskites containing azetidinium cations, [(CH(2))(3)NH(2)][M(HCOO)(3)] (M = Mn, Cu, Zn), all show a structural phase transition, coupled with the freezing of the ring-puckering molecular motion of azetidinium cations, and an extremely large dielectric anomaly near room temperature. Molecular dynamics simulations showed the freezing of ring-puckering motion of the four-membered-ring azetidinium cation near room temperature.
噘嘴！含有氮杂环丁烷阳离子的金属有机钙钛矿，[(CH(2))(3)NH(2)][M(HCOO)(3)]（M = Mn、Cu、Zn），全部显示出结构相变，伴随着氮杂环丁烷阳离子的环扭转分子运动的冻结，以及在室温附近出现非常大的介电异常。分子动力学模拟表明，室温附近四元环氮杂环丁烷阳离子的环扭转运动冻结。
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