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量身定制的分子段的行为:通过兰道尔配方进行初步评估
Min-Jie Huang1, Liang-Yan Hsu, Ming-Dung Fu
1Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University , Taipei, Taiwan 10617.
Journal of the American Chemical Society
|January 21, 2014
概括
研究人员开发了一种新的方法来提取单分子骨干电阻,克服了分子电子中的接触电阻的局限性. 这种方法使分子部分的定量评估成为可能,即使没有重复单元,也促进了分子设备的探索.
科学领域:
- 分子电子学分子电子学
- 纳米技术 纳米技术
- 材料科学是一种材料科学.
背景情况:
- 分子电子技术通过功能部分修改提供了电气性质的合成可调性.
- 单分子电阻测量因显著的头组-电极接触电阻而复杂.
- 目前的方法间接推断分子行为,限制了对新型分子结构的探索.
研究的目的:
- 提出并验证一种方法来提取固有的单分子骨干电阻.
- 为了克服金属分子金属测量中可以忽略的接触电阻的过于简单的假设.
- 为了使分子部分的定量评估独立于电极和定组效应.
主要方法:
- 利用兰道尔公式开发了一种简化方案,用于提取分子骨干电阻.
- 使用金,和电极对评估方案进行了交叉检查.
- 研究了各种固基,包括硫醇,亚烯和异硫酸.
主要成果:
- 成功提取了聚甲和分子脊柱的单分子电阻值.
- 证明骨干电阻是独立于特定的电极材料 (Au,Pd,Pt) 和定群 (醇,亚烯,异硫酸).
- 验证了分子部分的定量评估的拟议方法.
结论:
- 拟议的方法准确地提取了固有的分子骨干电阻,独立于接触效应.
- 这种方法有助于分子部分的定量评估,即使没有同类序列.
- 能够更广泛地探索和设计用于先进电子设备的新型分子结构.
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