Dresden 2017 – scientific programme
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O: Fachverband Oberflächenphysik
O 51: Nanostructures at Surfaces: 1D and 2D Structures and Networks
O 51.22: Poster
Tuesday, March 21, 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.