【作者】 安轩； 彭浩南； 房喻；

【Author】 Xuan An;Haonan Peng;Yu Fang;Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education,School of Chemistry and Chemical Engineering,Shaanxi Normal University;

【机构】 应用表面与胶体化学教育部重点实验室陕西师范大学化学化工学院；

【摘要】 信息爆炸以及电子器件微型化的时代亟需研发新型记忆材料,自旋交叉(SCO)材料可以在分子的两种电子态,即高自旋(HS)和低自旋(LS)态之间进行切换,因此被认为是最有前景的材料之一。然而,可控制备无包覆的SCO纳米材料仍然是一个巨大的挑战。基于此,本文报告了一种通过超分子凝胶制备[Fe(Rtrz)3](SO3CF3)2新型SCO纳米材料的方法。通过改变组装的浓度、溶剂和温度,可以制备出具有不同尺寸、形貌,且无表面活性剂/聚合物包覆的SCO纳米材料。进一步通过光学和磁性测量来研究其自旋交叉行为,发现立方形纳米材料的自旋转换在室温且伴有12 K的回滞宽度,使其有望应用于存储器件、显示器件、无墨打印和微机电系统。更多还原

【Abstract】 The explosive increase in information and the miniaturization of electronic devices demand new recording materials. The spin crossover(SCO) materials that switches between two electronic states of a molecule, high spin(HS) and low spin(LS) states, is one of the most promising candidates. However, it remains a great challenge to develop a universal method for the preparation of SCO nanomaterial. Herein, novel [Fe(Rtrz)3](SO3 CF3)2 based SCO nanomaterials were fabricated through the supramolecular gel strategy. By modifying the assembly conditions, such as the concentration, the solvent and the temperature, surfactant/polymer-free SCO nanomaterial with different sizes and morphologies could be prepared. Furthermore, their spin crossover behavior was investigated by optical and magnetic measurements. The spin transition features for the cubic shaped nanomaterial presented room temperature transition and a wide hysteresis loop of 12 K, making them promising for applications in memory devices, display devices, inkless paper and micro electro mechanical systems.更多还原