Self-Assembly and Local Manipulation of Au-Pyridyl Coordination Networks on Metal Surfaces
| Autor: | Yuxu Wang, Yu-qiang Ma, Ziliang Shi, Pei Nian Liu, Yang Song, Qiao Jin, Kun Zhou |
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| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Network structure 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences law.invention Metal Crystallography Homogeneous law visual_art visual_art.visual_art_medium Coordination network Self-assembly Physical and Theoretical Chemistry Scanning tunneling microscope 0210 nano-technology Nanoscopic scale |
| Zdroj: | ChemPhysChem. 18:2088-2093 |
| ISSN: | 1439-4235 |
| DOI: | 10.1002/cphc.201700439 |
| Popis: | Using scanning tunnelling microscopy (STM), we demonstrate that Au-pyridyl coordination can be used to assemble two-dimensional coordination network structures on metal surfaces. The polymorphism of the coordination network structures can be manipulated at both the micro- and nanoscale. Using the same organic ligand, we assembled two distinct polymorphic network structures, which were assisted by threefold Au-pyridyl coordination on Ag(111) with predeposited Au atoms (α-network), and by twofold Au-pyridyl coordination on Au(111) (β-network), respectively. Specifically on the Au(111) surface, single-oriented β-network domains as large as ≈400 nm were selected by thermal annealing. We ascribe this global control strategy to distinct Au bonding modes tuned by molecule-substrate interactions. Using an STM tip, we succeeded in creating α-network domains (≈10 nm) locally within the homogeneous β-network domain areas on Au(111) in a controlled manner. |
| Databáze: | OpenAIRE |
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