Electrical Properties of Single Molecules; from Switches towards Devices

单分子的电学性质；

• 批准号: 1508567
• 负责人: Eric Borguet
• 金额: $ 45万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1508567&HistoricalAwards=false
• 关键词: Electrical; Properties; Single; Molecules; Switches

In this project, funded by the Chemical Measurement and Imaging Program of the Chemistry Division, Professor Eric Borguet of Temple University designs and performs experiments to investigate the characteristics of single molecules with a particular focus on the effect of external physical and chemical parameters on changing the electrical resistance. To meet this challenge, target molecules whose properties depend on their immediate surroundings are investigated with state-of-the-art techniques. This research advances our understanding of the electrical properties of molecular components of sensors and electrical devices. The broader impacts of this work include potential societal benefits from the discovery of single molecule sensors and switches which can help to miniaturize electronic devices as well as the education and development of a diverse scientific workforce trained in a multidisciplinary environment. In addition, by providing participants from the diverse student body of Temple University that includes underrepresented minorities and first generation college students, and allowing local high school students the opportunity to engage in this research, the preparation of the next generation of scientists is advanced. This project focuses on the use of scanning tunneling microscopes to create nanoscale junctions that can trap single molecules for electrical measurements. Specifically selected probe molecules, whose electronic properties are sensitive to the characteristics of the environment in which they are located, are investigated. In addition, molecules are oriented in the measurement junction to determine the anisotropy of the electrical properties of the molecules.

在这个由化学部化学测量和成像计划资助的项目中，天普大学的Eric Borguet教授设计并进行了实验，以研究单分子的特性，特别关注外部物理和化学参数对改变电阻的影响。 为了应对这一挑战，其性质取决于其周围环境的目标分子与国家的最先进的技术进行了研究。这项研究推进了我们对传感器和电气设备的分子组件的电气特性的理解。这项工作的更广泛影响包括发现单分子传感器和开关的潜在社会效益，这有助于电子设备的智能化，以及在多学科环境中培训的多样化科学工作人员的教育和发展。此外，通过提供来自坦普尔大学不同学生团体的参与者，包括代表性不足的少数民族和第一代大学生，并允许当地高中生有机会参与这项研究，为下一代科学家做好准备。 这个项目的重点是使用扫描隧道显微镜来创建纳米级的结，可以捕获单分子的电测量。具体选择的探针分子，其电子性质是敏感的，它们所处的环境的特性，进行了研究。此外，分子在测量结中取向以确定分子的电性质的各向异性。