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Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
Published on: March 4, 2021
Guanine- and potassium-based two-dimensional coordination network self-assembled on Au(111)
Wei Xu1, Jian-guo Wang, Miao Yu
1Interdisciplinary Nanoscience Center (iNANO), Center for DNA Nanotechnology (CDNA), and Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, DK 8000 Aarhus C, Denmark. xuwei@tongji.edu.cn
Journal of the American Chemical Society
|October 28, 2010
Summary
Researchers created a novel metallosupramolecular porous network using potassium atoms and G-K biological coordination molecules on a gold surface. This network is stabilized by hydrogen bonding and metal-organic coordination, opening new avenues in surface chemistry.
Area of Science:
- Surface chemistry
- Supramolecular chemistry
- Coordination chemistry
Background:
- The G-K biological coordination system is well-established.
- Metal-organic coordination on inert surfaces is challenging.
- Controlling molecular self-assembly on surfaces is crucial for nanotechnology.
Purpose of the Study:
- To investigate bioligand-alkali metal coordination on an inert Au(111) surface.
- To construct a metallosupramolecular porous network.
- To understand the stabilization mechanisms of the network.
Main Methods:
- High-resolution scanning tunneling microscopy (STM) for surface imaging.
- Density functional theory (DFT) calculations for theoretical analysis.
- Utilizing the G-K biological coordination system.
Main Results:
- Successful coordination between mobile G molecules and potassium (K) atoms on Au(111).
- Formation of a stable metallosupramolecular porous network.
- The network is stabilized by a balance of hydrogen bonding and metal-organic coordination.
Conclusions:
- Bioligand-alkali metal coordination is achievable on inert surfaces like Au(111).
- A novel porous network structure was formed and characterized.
- The findings highlight the interplay of different bonding types in surface self-assembly.
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