Building a nanostructure with reversible motions using photonic energy.
Building a nanostructure with reversible motions using photonic energy.
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DOI:
10.1021/nn302388e
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发表时间:
2012-09-25
期刊:
影响因子:
17.1
通讯作者:
Tan, Weihong
中科院分区:
文献类型:
--
作者:
You, Mingxu;Huang, Fujian;Chen, Zhuo;Wang, Ruo-Wen;Tan, Weihong
Recently, the specific hybridization of DNA molecules has been used to construct self-assembled devices, e.g., the mechanical device to mimic cellular protein motors in nature. Here, we present a new light-powered DNA mechanical device based on the photoisomerization of azobenzene moieties and toehold-mediated strand displacement. This autonomous and controllable device is capable of moving towards either end of the track, simply by switching the wavelength of light irradiation, either UV (365nm) or visible (>450nm). This light-controlled strategy can easily solve one main technical challenge for step-wise walking devices: the selection of routes in multipath systems. The principle employed in this study, photoisomerization-induced toehold length switching, could be further useful in the design of other mechanical devices, with the ultimate goal of rivaling molecular motors for cargo transport and macroscopic movement.
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影响因子:
10.8
作者:
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通讯作者:
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影响因子:
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作者:
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作者:
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通讯作者:
Tan, Weihong