Controlling quantum well states and adsorbate positioning with self-assembled supramolecular architectures on surfaces

利用表面自组装超分子结构控制量子阱态和吸附物定位

• 批准号: 111287706
• 负责人: Professor Dr. Johannes V. Barth
• 金额: --
• 依托单位: Arbeitsgruppe Oberflächen- und Grenzflächenphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/111287706?language=en
• 关键词: Controlling; quantum; well; states; adsorbate

We propose systematic investigations to control electronic quantum well states and the organisation of coadsorbed species using self-assembled supramolecular templates. Highresolution scanning tunneling microscopy and scanning tunneling spectroscopy will be employed to characterize the surface topography and electronic structure, in particular regarding the confinement of the 2D surface state nearly free electron gas at close-packed noble metal substrates Nanochemical strategies will be explored with superlattices of distinct symmetry (1D gratings and nanoporous 2D metal-organic networks fabricated with zwitterionic and metal-directed assembly, respectively). The resulting surface electronic properties will be analyzed in depth with both local and integral probes to develop a rationale in this field. Moreover, the indirect electronic interactions mediated by the substrate will be used to arrange single atoms and molecules in different templates, including the orientational order of rod-like molecules and the alignment of magnetic adatoms.

我们提出了利用自组装超分子模板来控制电子量子井态和共吸附物种的组织的系统研究。高分辨扫描隧道显微镜和扫描隧道谱将被用来表征表面形貌和电子结构，特别是关于在紧密堆积的贵金属衬底上限制2D表面态的近自由电子气体，将探索具有明显对称性的超晶格的纳米化学策略(分别用两性离子组装和金属定向组装制备一维栅格和纳米孔2D金属-有机网络)。我们将用局部和整体探头对所得到的表面电子性质进行深入分析，以发展这一领域的理论基础。此外，由衬底介导的间接电子相互作用将用于将单个原子和分子排列在不同的模板中，包括棒状分子的取向顺序和磁性吸附原子的排列。

项目成果

Tetracene confinement in L-methionine gratings on the Ag(111) surface

Ag(111) 表面 L-蛋氨酸光栅中并四苯的限制

• DOI: 10.1016/j.susc.2015.08.015
• 发表时间: 2016
• 期刊: Surface Science
• 影响因子: 1.9
• 作者: J. Urgel;S. Vijayaraghavan;D. Ecija;W. Auwärter;J.V. Barth
• 通讯作者: J.V. Barth

Five-vertex Archimedean surface tessellation by lanthanide-directed molecular self-assembly

• DOI: 10.1073/pnas.1222713110
• 发表时间: 2013-04-23
• 期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• 影响因子: 11.1
• 作者: Ecija, David;Urgel, Jose I.;Barth, Johannes V.
• 通讯作者: Barth, Johannes V.

Assessment of Scanning Tunneling Spectroscopy Modes Inspecting Electron Confinement in Surface-Confined Supramolecular Networks

• DOI: 10.1038/srep01454
• 发表时间: 2013-03-18
• 期刊: SCIENTIFIC REPORTS
• 影响因子: 4.6
• 作者: Krenner, Wolfgang;Kuehne, Dirk;Barth, Johannes V.
• 通讯作者: Barth, Johannes V.