caa a22 4500 445303360 CHVBK 20180317142605.0 cr unu---uuuuu 170323e20100701xx s 000 0 eng 10.1007/s12274-010-0005-9 doi (NATIONALLICENCE)springer-10.1007/s12274-010-0005-9 Interplay of adsorbate-adsorbate and adsorbate-substrate interactions in self-assembled molecular surface nanostructures [Elektronische Daten] [Joachim Schnadt, Wei Xu, Ronnie Vang, Jan Knudsen, Zheshen Li, Erik Lægsgaard, Flemming Besenbacher] The adsorption of 2,6-naphthalenedicarboxylic acid (NDCA) molecules on the Ag(110), Cu(110), and Ag(111) surfaces at room temperature has been studied by means of scanning tunnelling microscopy (STM). Further supporting results were obtained using X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS). On the Ag(110) support, which had an average terrace width of only 15 nm, the NDCA molecules form extended one-dimensional (1-D) assemblies, which are oriented perpendicular to the step edges and have lengths of several hundred nanometres. This shows that the assemblies have a large tolerance to monatomic surface steps on the Ag(110) surface. The observed behaviour is explained in terms of strong intermolecular hydrogen bonding and a strong surface-mediated directionality, assisted by a sufficient degree of molecular backbone flexibility. In contrast, the same kind of step-edge crossing is not observed when the molecules are adsorbed on the isotropic Ag(111) or more reactive Cu(110) surfaces. On Ag(111), similar 1-D assemblies are formed to those on Ag(110), but they are oriented along the step edges. On Cu(110), the carboxylic groups of NDCA are deprotonated and form covalent bonds to the surface, a situation which is also achieved on Ag(110) by annealing to 200 °C. These results show that the formation of particular self-assembled molecular nanostructures depends significantly on a subtle balance between the adsorbate-adsorbate and adsorbate-substrate interactions and that kinetic factors play an important role. Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010 Molecular self-assembly nationallicence hydrogen bonding nationallicence scanning tunnelling microscopy nationallicence X-ray photoelectron spectroscopy nationallicence Schnadt Joachim Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Xu Wei Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Vang Ronnie Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Knudsen Jan Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Li Zheshen Institute for Storage Ring Facilities, Aarhus University, Building 1525, Ny Munkegade, 8000, Aarhus C, Denmark aut Lægsgaard Erik Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Besenbacher Flemming Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut Nano Research Tsinghua Press 3/7(2010-07-01), 459-471 1998-0124 3:7<459 2010 3 12274 https://doi.org/10.1007/s12274-010-0005-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12274-010-0005-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schnadt Joachim Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Xu Wei Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Vang Ronnie Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Knudsen Jan Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Li Zheshen Institute for Storage Ring Facilities, Aarhus University, Building 1525, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Lægsgaard Erik Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 700 1- Besenbacher Flemming Interdisciplinary Nanoscience Center, iNANO, and Department of Physics and Astronomy, Aarhus University, Building 1521, Ny Munkegade, 8000, Aarhus C, Denmark aut NATIONALLICENCE 773 0- Nano Research Tsinghua Press 3/7(2010-07-01), 459-471 1998-0124 3:7<459 2010 3 12274 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer