RUI: Electrophilic vs Free Radical Reactions of Halogen Systems with Terminal Perfluoroalkenes and Their Derivatives

RUI：带有末端全氟烯烃及其衍生物的卤素体系的亲电反应与自由基反应

• 批准号: 0091636
• 负责人: Dale Shellhamer
• 金额: $ 10万
• 依托单位: Point Loma Nazarene College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0091636&HistoricalAwards=false
• 关键词: RUI; Electrophilic; vs; Free; Radical

With this Research in Undergraduate Institutions (RUI) award, the Organic Dynamics Program supports the research of Dr. Dale F. Shellhamer of the Department of Chemistry at Point Loma Nazarene College. Professor Shellhamer explores the reaction conditions required to cause an ionic reaction of halogens, interhalogens and other halogen systems with various unreactive terminal perfluoroalkenes. A thorough understanding of addition reactions to perfluoroalkenes and perfluorohydrocarbons alkenes is necessary for the development of new polymerization processes and synthesis of new monomers.This study is designed to supply data that will provide a thorough understanding of halonium ions derived from a variety of substituted terminal perfluoroalkenes. The relative symmetry of the halonium ions in a series of substituted perfluoroalkenes will be compared to related data reported for halonium ions of analogous hydrocarbons.The applications of fluoropolymers cover broad areas such as: water, fuel and oil repellency, thermal stability, resistance to chemicals, UV radiation and weathering, and lubricants with a low coeffficient of friction retaining high thermal stability. The advantages of those materials offset the disadvantage of high unit cost. The research is designed to enhance the understanding of the reactions of fundamental fluorine chemistry which should have applications in many commercial processes. This project is well suited for undergraduates. They will carry out syntheses and use modern instruments to characterize a large number of compounds generated from this study. Students are encouraged to suggest mechanistic interpretations of the experimental data and to propose control experiments to confirm an ionic pathway and ensure that kinetic products are being reported. The undergraduate research program at Point Loma Nazarene College also serves as a recruitment tool for outstanding high school students interested in various branches of science.

有了这个本科院校研究（RUI）奖，有机动力学计划支持博士戴尔F。Shellhamer是Point Loma Nazarene学院化学系的教授。Shellhamer教授探索了引起卤素、卤间化合物和其他卤素体系与各种不反应的末端全氟烯烃发生离子反应所需的反应条件。对全氟烯烃和全氟烃烯烃加成反应的深入了解对于开发新的聚合工艺和合成新的单体是必要的，本研究的目的是提供数据，将提供一个透彻的了解卤离子衍生自各种取代的末端全氟烯烃。将一系列取代全氟烯烃中卤离子的相对对称性与已报道的类似烃类卤离子的相关数据进行比较，氟聚合物的应用涵盖广泛的领域，如：防水、防油、防油、热稳定性、耐化学品、耐紫外线辐射和耐候性，以及保持高热稳定性的低摩擦系数润滑剂。这些材料的优点抵消了单位成本高的缺点。这项研究旨在加强对基础氟化学反应的理解，这些反应应该在许多商业过程中得到应用。这个项目非常适合本科生。他们将进行合成，并使用现代仪器来表征本研究产生的大量化合物。鼓励学生提出实验数据的机械解释，并提出控制实验，以确认离子途径，并确保动力学产物被报告。Point Loma Nazarene College的本科研究计划也是对科学各个分支感兴趣的优秀高中生的招聘工具。