Surface Photochemistry and Interfacial Charge Transfer

表面光化学和界面电荷转移

• 批准号: 0070122
• 负责人: John White
• 金额: $ 51.05万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070122&HistoricalAwards=false
• 关键词: Surface; Photochemistry; Interfacial; Charge; Transfer

The research project entitled "Surface Photochemistry and Interfacial Charge Transfer" will be conducted by Dr. J. Michael White from the University of Texas, Austin and is supported by the Analytical and Surface Chemistry program. The research is focused in two areas. (1)The study of photodissociation dynamics of adsorbed alkyl nitrite species on metals, and (2) the study of charge transfer reactions of organic systems which function as light emitting diodes (OLEDs). Dr. White has found that there are 3 pathways associated with the photodissociations. Each pathway is affected by the surface substrate (metal), the adlayer structure, energy and method of excitation and the presence of coadsorbed species. The first part of the research program will focus on elucidating the effects and separating the pathways. The second part of the research program seeks to characterize the structure and electronic properties of adsorbed OLEDs and correlating these properties to luminescent characteristics. Both of these projects will be carried out using state of the art surface characterization techniques. Both projects will provide an important and fundamental understanding of photodissociation mechanisms and OLEDs. The results of this research will have an impact on the area of fundamental photochemistry of adsorbed species on metals and on the understanding of luminescence and how it is affected by structure and electronic properties. The OLED studies could potentially have a broad impact on the development of new materials and devices.

题为“表面光化学和界面电荷转移”的研究项目将由德克萨斯大学奥斯汀大学的J. Michael White博士进行，并得到分析和表面化学计划的支持。 该研究集中在两个领域。 （1）对金属吸附烷基亚硝酸盐物质的光解离动力学的研究，以及（2）有机系统的电荷转移反应的研究，这些反应起着光发射二极管（OLEDS）的作用。 怀特博士发现，有3种与光解离的途径。 每个途径都受表面底物（金属），adlayer结构，激发的能量和方法的影响以及共掺杂物种的存在。 研究计划的第一部分将着重于阐明效果并分离途径。 该研究计划的第二部分旨在表征吸附OLED的结构和电子特性，并将这些特性与发光特性相关联。 这两个项目都将使用最先进的表面表征技术进行。 这两个项目将对光解离机理和OLED提供重要而基本的了解。 这项研究的结果将对金属吸附物种的基本光化学区域产生影响，对金属的理解以及如何受到结构和电子特性的影响。 OLED研究可能会对新材料和设备的开发产生广泛的影响。