Electrochemistry of Supramolecular Systems

超分子系统的电化学

• 批准号: 9633434
• 负责人: Angel Kaifer
• 金额: $ 44.67万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-01 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633434&HistoricalAwards=false
• 关键词: Electrochemistry; Supramolecular; Systems

With support from the Organic Dynamics program of the Chemistry Division, Professor Angel E. Kaifer of the University of Miami (Florida) will study the electrochemistry of supramolecular systems, especially rotaxanes, dendrimers, and host-guest systems. This is a continuation of previously funded work (CHE-9304262) which showed that electron transfer reactions and proton transfer reactions can be used to switch certain rotaxanes between conformers having different electronic absorption spectra. The present project will involve investigation of the thermodynamics and kinetics of electron transfer involving such supramolecular architectures, the preparation of new rotaxane systems, and continuation of fundamental investigations of binding, structure, and intermolecular forces in host-guest systems. The electron transfer reactions are selected for special emphasis. The project will include work intended to lead to facile preparation of supported monolayers containing preformed binding sites. The monolayers chosen for emphasis are amine functionalized receptors on carboxylate terminated self-assembled monolayers. This project will prepare some of the groundwork for the use of certain chemical compounds as `molecular switches,` molecules which respond in some observable way to external stimuli such as light or electricity. The work may eventually be useful in nanotechnology, since it leads to new materials with the potential for molecular level information storage and processing. Work with self-assembled monolayers may lead to selective molecular sensors.

在化学系有机动力学项目的支持下，迈阿密大学（佛罗里达州）的Angel E. Kaifer教授将研究超分子系统的电化学，特别是轮烷、树枝状聚合物和主客体系统。这是先前资助的工作（CHE-9304262）的延续，该工作表明电子转移反应和质子转移反应可用于在具有不同电子吸收光谱的构象异构体之间切换某些轮烷。本项目将涉及涉及此类超分子结构的电子转移热力学和动力学的研究，新轮烷系统的制备，以及主客体系统中结合、结构和分子间力的继续基础研究。 选择电子转移反应作为特别重点。 该项目将包括旨在轻松制备含有预先形成的结合位点的支撑单层的工作。选择强调的单层是羧酸盐封端的自组装单层上的胺功能化受体。 该项目将为使用某些化合物作为“分子开关”奠定基础，这些分子以某种可观察的方式对光或电等外部刺激做出反应。 这项工作最终可能会在纳米技术中发挥作用，因为它会带来具有分子级信息存储和处理潜力的新材料。 使用自组装单分子层可能会产生选择性分子传感器。