通过在超高真空环境下使用分子分辨原子力显微镜（AFM）和 Kelvin 探针力显微镜研究沉积在 HOPG 上的亚单层和单层中的 [MnIII6CrIII]3+ 单分子磁体的晶体有序和分解。

Molecular and Surface Physics, Bielefeld University, Universitaetsstr 25, Bielefeld 33615, Germany.

Nanoscale Res Lett. 2014 Feb 5;9(1):60. doi: 10.1186/1556-276X-9-60.

Monolayers and submonolayers of [MnIII6CrIII]3+ single-molecule magnets (SMMs) adsorbed on highly oriented pyrolytic graphite (HOPG) using the droplet technique characterized by non-contact atomic force microscopy (nc-AFM) as well as by Kelvin probe force microscopy (KPFM) show island-like structures with heights resembling the height of the molecule. Furthermore, islands were found which revealed ordered 1D as well as 2D structures with periods close to the width of the SMMs. Along this, islands which show half the heights of intact SMMs were observed which are evidences for a decomposing process of the molecules during the preparation. Finally, models for the structure of the ordered SMM adsorbates are proposed to explain the observations.

使用液滴技术将 [MnIII6CrIII]3+ 单分子磁体 (SMM) 的单层和亚单层吸附在高度取向的热解石墨 (HOPG) 上，通过非接触原子力显微镜 (nc-AFM) 以及 Kelvin 探针力显微镜 (KPFM) 进行了表征，这些单层和亚单层显示出类似于分子高度的岛状结构。此外，还发现了具有接近 SMM 宽度的有序 1D 和 2D 结构的岛。沿着这个方向，观察到了显示完整 SMM 高度一半的岛，这是分子在制备过程中分解的证据。最后，提出了有序 SMM 吸附物结构的模型来解释这些观察结果。