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Dynamics of Electron Hopping and Translational Diffusion in Monolayers at the Air/Water Interface

空气/水界面处单层电子跳跃和平移扩散的动力学

基本信息

批准号：
9422619
负责人：
Marcin Majda
金额：
$ 39.43万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1995
资助国家：
美国
起止时间：
1995-03-01 至 1999-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422619&HistoricalAwards=false
关键词：
Dynamics Electron Hopping Translational Diffusion

项目摘要

The modelling of organized molecular systems such as biological membranes, using monolayer assemblies at the air/water interface, forms the subject of this research project supported by the Analytical and Surface Chemistry program. Electron hopping in organized multimolecular structures, and lateral translational diffusion of molecules on the water surface are the two main topics of investigation in this work. Langmuir-Blodgett techniques, Brewster angle microscopy, and 2D electrochemistry involving "line" microelectrodes are the principal experimental tools used in these studies. The dependence of electron hopping rate on orientation of the donor- acceptor pair in these organized monolayers will be determined. The effects of hydrodynamic coupling and viscosity of the interfacial layer on the diffusion of surfactant molecules on the water surface will be investigated as well. This information will help to develop an understanding of molecular and electron transport through biologically important membrane systems. Molecular monolayer assemblies formed at the air/water interface are the focus of the research of this project. The lateral motion of electrons and surfactant molecules in these model systems will be explored using a variety of optical and electrochemical methods. This information will be useful for developing models of membrane transport of importance in biological and electroanalytical systems.

在空气/水界面使用单层组件对有组织的分子系统（例如生物膜）进行建模，构成了该研究项目的主题，该项目由分析和表面化学项目支持。有组织的多分子结构中的电子跳跃和分子在水面上的横向平移扩散是本工作研究的两个主要主题。 Langmuir-Blodgett 技术、布鲁斯特角显微镜和涉及“线”微电极的二维电化学是这些研究中使用的主要实验工具。将确定电子跳跃速率对这些有组织的单层中供体-受体对的取向的依赖性。还将研究流体动力耦合和界面层粘度对表面活性剂分子在水面上扩散的影响。这些信息将有助于加深对通过具有重要生物学意义的膜系统的分子和电子传输的理解。在空气/水界面形成的分子单层组装体是该项目的研究重点。将使用各种光学和电化学方法探索这些模型系统中电子和表面活性剂分子的横向运动。这些信息将有助于开发生物和电分析系统中重要的膜传输模型。