在可光切换的二甲基二胺类型单分子连接处进行电荷传输
Diego Roldan1, Veerabhadrarao Kaliginedi, Saioa Cobo
1Département de Chimie Moléculaire, UMR CNRS-5250, Institut de Chimie Moléculaire de Grenoble, FR CNRS-2607, Université Joseph Fourier Grenoble I, BP 53, 38041 Grenoble Cedex 9, France.
Journal of the American Chemical Society
|April 12, 2013
概括
研究人员研究了用于电子产品的可光切换分子. 一种二甲基二烯 (DHP) 衍生物在电导率上显示出大而可逆的变化,在分子开关应用中实现了高的开启/关闭比率.
科学领域:
- 分子电子学分子电子学
- 超分子化学 超分子化学
- 纳米技术纳米技术
背景情况:
- 可光切换的分子提供可调节的电子性质.
- 单分子结点对于纳米电子设备至关重要.
研究的目的:
- 调查可光切换二甲基二烯 (DHP) 衍生物的导电性质.
- 将分子结构的变化与单分子连接处的导电率变化相关联.
主要方法:
- 使用机械可控断路结 (MCBJ) 技术.
- 使用DHP衍生物制造和测量单分子结点.
主要成果:
- 在单个DHP分子中证明了可逆导电性切换.
- 在DPH异构化后,观察到导电率大幅下降 (>10^4 ON/OFF比率).
- 证实了导电性切换的优异可逆性.
结论:
- 可光切换的DPH衍生物对分子电子应用具有前景.
- 异构化诱导的结构变化有效调节单分子导电.
- 高的ON/OFF比率和可逆性是实际分子开关的关键.
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