Solid-State Single Electron Transfer of Nanoparticle Monolayers

陈少伟教授在美国国家科学基金会分析和表面化学项目的资助下，研究纳米固体薄膜的电子转移特性。在这个项目中，重点将集中在单分子有机纳米粒子的电化学研究上，这种纳米粒子将通过Langmuir方法直接在空气/水界面上制备，或者通过Langmuir-Blodgett技术沉积到电极表面。在这些研究中，将故意改变粒子间的分离，并仔细和系统地研究它们对系综电子电导性质的影响。然后将利用系综结构和电子转移性质之间的直接关联来识别和优化相关的结构参数，从而实现纳米粒子固体组装中的单电子转移。这里所获得的基本见解可以作为发展基于纳米粒子的单电子晶体管的基本基础。这些研究活动将与几个专门针对弱势或代表性不足学生的外展项目紧密结合。

Professor Shaowei Chen is supported by the NSF Analytical and Surface Chemistry program to study the electron transfer properties of nanoparticle solid films. In this project, the focus will be on electrochemical studies of monolayers of organically capped nanoparticles which will be prepared either directly at the air|water interface by the Langmuir method or by deposition onto an electrode surface by the Langmuir-Blodgett technique. In these studies, the interparticle separations will be deliberately varied and their effects on the ensemble electronic conductivity properties will be carefully and systematically examined. The direct correlation between the ensemble structures and electron-transfer properties will then be exploited to identify and optimize related structural parameters so that single electron transfer in nanoparticle solid assemblies can be achieved. The fundamental insights that are obtained here may serve as the fundamental basis for the development of nanoparticle-based single electron transistors. These research activities will be integrated closely with several outreach programs specifically targeting disadvantaged or underrepresented students.