期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 21, 页码 7156-7159出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b02758
关键词
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资金
- Polish Ministry of Science and Higher Education's Mobility Plus programme [1068/MOB/2013/0]
- ERC [336935]
- ERC DA [694345]
- Netherlands Ministry of Education, Culture and Science [024.001.035]
- Research Foundation-Flanders (FWO) [G0H6316N, G0A5817N]
- Flemish government through long term structural funding Methusalem [CASAS2, Meth/15/04]
- Hercules foundation [HER/11/14]
- European Research Council (ERC) [694345] Funding Source: European Research Council (ERC)
Synthetic molecular motors continue to attract great interest due to their ability to transduce energy into nanomechanical motion, the potential to do work and drive systems out-of-equilibrium. Of particular interest are unidirectional rotary molecular motors driven by chemical fuel or light. Probing the mechanistic details of their operation at the single-molecule level is hampered by the diffraction limit, which prevents the collection of dynamic positional information by traditional optical methods. Here, we use defocused wide-field imaging to examine the unidirectional rotation of individual molecular rotary motors on a quartz surface in unprecedented detail. The sequential occupation of nanomechanical states during the UV and heat-induced cycle of rotation are directly imaged in real-time. The approach will undoubtedly prove important in elucidating the mechanistic details and assessing the utility of novel synthetic molecular motors in the future.
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