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Fabrication and Operation of a Nano-Optical Conveyor Belt
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在玻璃纳米孔电极上的光子封闭运输
Gangli Wang1, Andrew K Bohaty, Ilya Zharov
1Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA.
Journal of the American Chemical Society
|October 13, 2006
概括
研究人员开发了一种光化学开关,用于控制纳米孔中的分子运输. 紫外线阻断了带电的分子,而可见光或电解质恢复了运输,使选择性分子传递成为可能.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 纳米孔电极为分子运输提供了精确的控制.
- 螺旋分子可以经历可逆的光化学转变.
- 控制纳米尺度的离子运输对于各种应用至关重要.
研究的目的:
- 为了使玻璃纳米孔电极与spiropyran具有功能,用于光化学控制.
- 通过纳米孔研究分子扩散的光诱导调制.
- 为了证明光选择性运输和对氧化还原物种的捕获.
主要方法:
- 玻璃纳米孔内部的修改与spiropyran部分.
- 在具有不同离子强度的乙二溶液中进行电化学研究.
- 紫外线和可见光辐射来诱导和逆转螺旋异体化.
- 运输测量带电和中性氧化还原物种.
主要成果:
- 紫外线诱导的螺旋转化为美洛 (MEH+),阻断Fe (bpy) 3 (bpy) 2+) 运输~100%.
- 可见光或增加的电解质度通过逆转螺旋形式或选电荷恢复了运输.
- 中性氧化还原物种运输不受光的影响,使基于电荷的光选择性传递成为可能.
- 该系统证明了纳米孔内Fe(bpy) ((3) ((2+) 的光化学捕获.
结论:
- 螺旋改造的纳米孔电极提供了对分子运输的有效光化学控制.
- 该系统允许基于氧化还原活性的光选择性运输和带电分子的捕获.
- 开发的方法为纳米级精确分子操纵提供了一种新的方法.
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