期刊
ACS NANO
卷 4, 期 7, 页码 3697-3701出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn100545r
关键词
bistable rotaxanes; electrochemistry; scanning tunneling microscopy; single-molecule motion; mechanically interlocked molecules
类别
资金
- NSF
- Department of Energy [DE-FG02-07ER15877]
- Center on Functional Engineered and NanoArchitectonics (FENA, sponsored by the Semiconductor Research Corporation)
- Kavli Foundation
We have directly observed electrochemically driven single-molecule station changes within bistable rotaxane molecules anchored laterally on gold surfaces. These observations were achieved by employing molecular designs that significantly reduced the mobility and enhanced the assembly of molecules in orientations conducive to direct measurement using scanning tunneling microscopy. The results reveal molecular-level details of the station changes of surface-bound bistable rotaxane molecules, correlated with their different redox states. The mechanical motions within these mechanically interlocked molecules are influenced by their interactions with the surface and with neighboring molecules, as well as by the conformations of the dumbbell component.
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