Exploring the F16CoPc/Ag(110) Interface Using Scanning Tunneling Microscopy and Spectroscopy. Part 1: Template-Guided Adlayer Structure Formation
Exploring the F16CoPc/Ag(110) Interface Using Scanning Tunneling Microscopy and Spectroscopy. Part 1: Template-Guided Adlayer Structure Formation
复制标题
使用扫描隧道显微镜和光谱学探索 F16CoPc/Ag(110) 界面第 1 部分：模板引导的 Adlayer 结构形成
DOI：
10.1021/jp9078019
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发表时间：
2010
影响因子：
3.7
通讯作者：
Hietschold
中科院分区：
文献类型：
--
作者：
Toader;Gopakumar;Abdel-Hafiez. M;Hietschold
利用超高真空扫描隧道显微镜（UHV STM）研究了十六氯酞菁钴（F16 CoPc）在有机分子束外延（OMBE）制备的银（110）表面的吸附.金属衬底的不对称性被发现作为有机吸附层的模板，优先沿着[11 <$0]晶轴生长，导致形成具有明确定义的钉扎中心的相称结构。观察到线到线外延，其中interpinning线间距的差异叠加两种不同结构的发展：倾斜和正方形。结构模型提出并讨论了两个吸附质晶格，其中第一个是强烈支持的分子自组装在缺陷附近，特别是在域边界的镜像结构诱导。
Adsorption of cobalt(II) hexadecafluoro-phthalocyanine (F16CoPc) onto a silver (110) surface, prepared by organic molecular beam epitaxy (OMBE) is investigated using ultra high vacuum scanning tunneling microscopy (UHV STM) operating at 40 K. The asymmetry of the metal substrate is found to act as a template for the organic adlayer that grows preferentially along the [11̅0] crystallographic axis leading to the formation of commensurate structures with well-defined pinning centers. A line-to-line epitaxy is observed where the difference in interpinning line spacing superimposes the development of two different structures: oblique and square. Structural models are proposed and discussed for both adsorbate lattices where the first one is strongly sustained by the molecular self-assembly at the defect proximity and especially at the domain boundaries where a mirror structure is induced.