期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 8, 期 10, 页码 2466-2470出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201300546
关键词
interfaces; nanostructures; porous materials; scanning probe microscopy; self-assembly
资金
- National Key Project on Basic Research [2011CB808700, 2011CB932300]
- National Natural Science Foundation of China [91023013, 21121063, 20905069, 21073204]
- Beijing Municipal Education Commission [20118000101]
- Chinese Academy of Sciences
Control over the assembly of molecules on a surface is of great importance for the fabrication of molecule-based miniature devices. Melamine (MA) and molecules with terminal MA units are promising candidates for supramolecular interfacial packing patterning, owing to their multiple hydrogen-bonding sites. Herein, we report the formation of self-assembled structures of MA-capped molecules through a simple on-surface synthetic route. MA terminal groups were successfully fabricated onto rigid molecular cores with 2-fold and 3-fold symmetry through interfacial Schiff-base reactions between MA and aldehyde groups. Sub-molecular scanning tunneling microscopy (STM) imaging of the resultant adlayer revealed the formation of nanoporous networks. Detailed structural analysis indicated that strong hydrogen-bonding interactions between the MA groups persistently drove the formation of nanoporous networks. Herein, we demonstrate that functional groups with strong hydrogen-bond-formation ability are promising building blocks for the guided assembly of nanoporous networks and other hierarchical 2D assemblies.
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