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PTCDA molecules on an InSb(001) surface studied with atomic force microscopy

机译:原子力显微镜研究InSb(001)表面上的PTCDA分子

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摘要

PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecular structures assembled on an InSb( 001) c( 8 x 2) reconstructed surface have been studied using frequency modulated atomic force microscopy. The high-resolution imaging of the structures is possible through repulsive interactions, using the constant height scanning mode. During initial stages of growth the [ 110] diffusion channel dominates as indicated by formation of long PTCDA molecular chains parallel to the [ 110] crystallographic direction on the InSb surface. For a single monolayer coverage a wetting layer of PTCDA is formed. Finally it is shown that the PTCDA/InSb is a promising system for building molecular nanostructures by manipulation of single molecules with the AFM tip.
机译:已使用调频原子力显微镜研究了组装在InSb(001)c(8 x 2)重建表面上的PTCDA(3,4,9,10-per-四羧酸二酐)分子结构。使用恒定高度扫描模式,通过排斥相互作用可以对结构进行高分辨率成像。在生长的初始阶段,[110]扩散通道占主导地位,这与在InSb表面形成平行于[110]晶体学方向的长PTCDA分子链所表明。对于单层覆盖,形成PTCDA的润湿层。最后表明,PTCDA / InSb是通过AFM尖端操作单个分子来构建分子纳米结构的有前途的系统。

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