Preparation of monolayers of [MnIII6CrIII]3+ single-molecule magnets on HOPG, mica and silicon surfaces and characterization by means of non-contact AFM
Preparation of monolayers of [MnIII6CrIII]3+ single-molecule magnets on HOPG, mica and silicon surfaces and characterization by means of non-contact AFM
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HOPG、云母和硅表面单层 [MnIII6CrIII]3 单分子磁体的制备及非接触 AFM 表征
DOI：
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发表时间：
2011
影响因子：
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通讯作者：
U. Heinzmann
中科院分区：
文献类型：
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作者：
A. Gryzia;H. Predatsch;A. Brechling;V. Hoeke;E. Krickemeyer;C. Derks;M. Neumann;T. Glaser;U. Heinzmann
我们报告的各种盐的表征[MnIII 6CrIII]3+复合物上制备的基板，如高取向热解石墨（HOPG），云母，二氧化硅，和Si 3 N4。[MnIII 6CrIII]3+是单分子磁体，即，一种超顺磁性分子，阻断温度约为2K。[MnIII 6CrIII]3+的三个正电荷被各种阴离子如四苯硼酸根（BPh 4-）、乳酸根（C3 H5 O3-）或高氯酸根（ClO 4-）电中和。使用液滴技术在溶液外的基底上制备分子。调查的主要课题是如何阴离子和基板的影响新兴的表面拓扑结构的准备过程中和之后。对于HOPG和SiO2，产生了平坦的岛状和半球形结构。我们观察到衬底的电子性质和分析的结构之间的强相关性，特别是在云母的情况下，我们观察到在整个表面的分析结构的梯度。
We report on the characterization of various salts of [MnIII6CrIII]3+ complexes prepared on substrates such as highly oriented pyrolytic graphite (HOPG), mica, SiO2, and Si3N4. [MnIII6CrIII]3+ is a single-molecule magnet, i.e., a superparamagnetic molecule, with a blocking temperature around 2 K. The three positive charges of [MnIII6CrIII]3+ were electrically neutralized by use of various anions such as tetraphenylborate (BPh4-), lactate (C3H5O3-), or perchlorate (ClO4-). The molecule was prepared on the substrates out of solution using the droplet technique. The main subject of investigation was how the anions and substrates influence the emerging surface topology during and after the preparation. Regarding HOPG and SiO2, flat island-like and hemispheric-shaped structures were created. We observed a strong correlation between the electronic properties of the substrate and the analyzed structures, especially in the case of mica where we observed a gradient in the analyzed structures across the surface.