作为纳米级金属分子金属结合点的光控制分子电子开关的亚烯
Jeffrey M Mativetsky1, Giuseppina Pace, Mark Elbing
1ISIS-CNRS 7006, Université Louis Pasteur, 8 allée Gaspard Monge, 67000 Strasbourg, France.
Journal of the American Chemical Society
|June 26, 2008
概括
在金属分子金属连接处的阿佐烯分子的光异构化导致电导率增加了30倍. 使用导电原子力显微镜观察到的这种切换行为是由于分子构造变化.
科学领域:
- 分子电子学分子电子学
- 纳米技术纳米技术
- 摄影化学的使用.
背景情况:
- 阿佐烯分子表现出光异构化,在暴露在光线下,分子结构的可逆变化.
- 金属-分子-金属结点对于分子电子设备至关重要.
研究的目的:
- 为了研究纳米连接处的导电性切换,利用基于亚博的分子.
- 为了将光异构化与电性质的变化相关联.
主要方法:
- 使用导电原子力显微镜 (C-AFM) 制造纳米金属分子金属连接点.
- 形成金支的亚博烯自组装单层.
- 连接点的电气特性. 连接点的电气特性.
主要成果:
- 在以亚博基为基础的连接处观察到显著的导电量切换.
- 测量了30倍的电导率增加,归因于光异构化.
- 与导电量的增加相关联,由于分子构造变化,道屏障的长度减少.
结论:
- 亚二光异构化可以有效地控制纳米连接处的电导率.
- 证明了亚博烯分子在分子开关和记忆器件中的潜力.
- C-AFM方法适用于探测单分子结的电子性质.
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