AVS 62nd International Symposium & Exhibition
    Thin Film Wednesday Sessions
       Session TF+AS+BI-WeA

Paper TF+AS+BI-WeA10
On-Surface Synthesis of Organic Nanostructures on Copper Surfaces

Wednesday, October 21, 2015, 5:20 pm, Room 114

Session: Thin Films for Biological and Biomedical Applications
Presenter: Junfa Zhu, University of Science and Technology of China
Authors: Q.T. Fan, University of Science and Technology of China
J.M. Gottfried, Philipps-Universität Marburg, Germany
J.F. Zhu, University of Science and Technology of China
Correspondent: Click to Email
The on-surface synthesis of organic nanostructures known as bottom-up approach paves a new way for surface structuring, which plays a vital role in catalysis, sensor systems, or organic electronics. In this presentation, we will report our recent studies on the on-surface synthesis of 2D organic nanostructures on Cu(111) and Cu(110) surfaces using a specially designed bromo-terphenyl precursor, namely 4,4’’-dibromo-meta-terphenyl (DMTP). The study was performed under ultra-high vacuum conditions using a combination of scanning tunneling microcopy (STM) and X-ray photoelectron spectroscopy (XPS). The results indicate that the two different surface structures of Cu drive the precursor molecule to form different nanostructures on the surface. We will show temperature-dependent organic nanostructures formed after DMTP adsorbed on Cu(111) and Cu(110). These organic nanostructures include large-area, defect-free 2D ordered nonostructures of intact DMTP on Cu(111), 1- or 2D polymeric zigzag organometallic intermediates formed on Cu(111) and Cu(110), and the macromolecular nonostructures including hexagonal close-packed arrays of cyclo-octadecaphenylene (hyperbenzene), oligophenylene nanowires formed through Ullmann reaction mechanism. This work is supported by the National Natural Science Foundation of China (21173200, 21473178) and National Basic Research Program of China (2013CB834605)