Functional Interlocked Macromolecules and Interpenetrating Supramolecular Polymers

功能性连锁高分子和互穿超分子聚合物

• 批准号: 0317170
• 负责人: James Stoddart
• 金额: $ 68万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0317170&HistoricalAwards=false
• 关键词: Functional; Interlocked; Macromolecules; Interpenetrating; Supramolecular

The focus of this research involves the bottom-up fabrication of mechanically interlocked polymers starting with a preorganization step, where monomers are brought together by noncovalent forces, followed by a "fixing" step that links the monomers covalently or covalently and mechanically, to form the polymers. The construction of both the supramolecular and mechanically interlocked polymers depends on the hydrogen bonding and other interactions that occur between a secondary dialkylammonium ion center and a crown ether with at least [24] crown-8 constitution to bring the recognition units together in an interpenetrating manner. Both photochemistry and dynamic covalent chemistry will be used to assist in the formation of the interlocked polymers. The use of reversible bond formation in the polymerization step will allow for the production of the most thermodynamically stable polymer.With this award, the Organic and Macromolecular Chemistry Program is supporting the research of Dr. J. Fraser Stoddart of the Department of Chemistry and Biochemistry at the University of California-Los Angeles. Dr. Stoddart will focus his work on using noncovalent synthesis to create supramolecular polymers and employ supramolecular assistance to covalent synthesis to construct mechanically interlocked polymers. In a broader sense, understanding the formation of these polymers will lead to the development of new and unique polymeric materials and will give insight into the fabrication of nanoscale materials containing dynamic covalent and mechanical bonds. The project also provides an excellent venue for the interdisciplinary training of undergraduate, graduate and postgraduate students.

这项研究的重点涉及自下而上的机械联锁聚合物的制造，从预组织步骤开始，其中单体通过非共价力聚集在一起，然后是“固定”步骤，将单体共价或共价和机械地连接在一起，以形成聚合物。 超分子和机械互锁聚合物的结构取决于二烷基仲铵离子中心和具有至少[24]冠-8结构的冠醚之间发生的氢键和其他相互作用，以使识别单元以互穿的方式结合在一起。光化学和动态共价化学都将用于帮助形成互锁聚合物。 在聚合步骤中使用可逆键形成将允许生产最稳定的聚合物。有了这个奖项，有机和大分子化学计划支持加州大学洛杉矶分校化学和生物化学系的J. Fraser Stoddart博士的研究。 Stoddart博士将专注于使用非共价合成来创建超分子聚合物，并采用超分子辅助共价合成来构建机械互锁聚合物。 从更广泛的意义上说，了解这些聚合物的形成将导致新的、独特的聚合物材料的开发，并将深入了解含有动态共价键和机械键的纳米级材料的制造。 该项目还为本科生、研究生和研究生的跨学科培训提供了一个极好的场所。