Single-DNA molecule nanomotor regulated by photons.

Single-DNA molecule nanomotor regulated by photons.
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DOI:
10.1021/nl9011694
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发表时间:
2009-07
期刊:
影响因子:
10.8
通讯作者:
Tan W
Tan W
中科院分区:
材料科学1区
文献类型:
--
作者:
Kang H;Liu H;Phillips JA;Cao Z;Kim Y;Chen Y;Yang Z;Li J;Tan W

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我们设计了一个由光子驱动的单分子纳米管。纳米粒子是一种DNA发夹结构的分子,与偶氮苯部分结合,以促进可逆的光可控开关。在重复的UV-vis照射下,该纳米粒子显示出40-50%的开-关转换效率。这种类型的纳米粒子显示出良好的调节反应,可以在温和的条件下操作,没有废物的输出。与多组分DNA纳米机器相比,这种单分子系统中的分子内相互作用提供了独特的浓度无关的运动功能。此外,马达骨架的发夹结构可以显著提高光到运动能量转换的效率。这些结果表明,偶氮苯掺入,发夹结构的单分子DNA纳米马达具有良好的应用潜力,需要高效的光驱动的分子马达。
We report the design of a single-molecule nanomotor driven by photons. The nanomotor is a DNA hairpin-structured molecule incorporated with azobenzene moieties to facilitate reversible photocontrollable switching. Upon repeated UV–vis irradiation, this nanomotor displayed 40–50% open–close conversion efficiency. This type of nanomotor displays well-regulated responses and can be operated under mild conditions with no output of waste. In contrast to multiple-component DNA nanomachines, the intramolecular interaction in this single-molecule system offers unique concentration-independent motor functionality. Moreover, the hairpin structure of the motor backbone can significantly improve the efficiency of light-to-movement energy conversion. These results suggest that azobenzene-incorporated, hairpin-structured single-molecule DNA nanomotors have promising potential for applications which require highly efficient light-driven molecular motors.
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