Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 51: Nanostructures at Surfaces: 1D and 2D Structures and Networks

O 51.22: Poster

Dienstag, 21. März 2017, 18:30–20:30, P1C

On-Surface Synthesis of Low-Dimensional Nanostructures from Haloarenes — •Qitang Fan¹, Tao Wang², Cici Wang², Junfa Zhu², Min Chen¹, Claudio K. Krug¹, Malte Zugermeier¹, Julian Kuttner¹, Gerhard Hilt¹, and J. Michael Gottfried¹ — ¹Fachbereich Chemie, Philipps-Universität Marburg, Germany — ²National Synchrotron Radiation Laboratory, University of Science and Technology of China

The fabrication of low-dimensional nanostructures via on-surface synthesis has attracted tremendous attention due to their potential applications in nano-scale electronics and devices. Robust zero-dimensional (0D) cycles and one-dimensional (1D) chains are fabricated on metal surfaces from 4,4''-dibromo-m-terphenyl (DBMTP) molecules. Hyperbenzene, a hexagon consisting of 18 phenyl rings, forms ordered arrays on Cu(111), Ag(111) and Au(111) with maximum yield under pseudo-high dilution conditions. Organometallic tetragons and hexagons with C-Cu-C bonds were obtained on Cu stripes (with width from 2.6 nm to 3.6 nm) of a Cu(110)-(2x1)O supergrating surface. Zigzag organometallic chains and the corresponding oligophenylene chains form from DBMTP on Cu(110), Cu(111), Ag(111) and Au(111) with different yields and length distributions. The comparison of the outcomes on different substrates may shed light on the control of the topologies of nanostructures.