Cyclophanes to Study Principles of Molecular Recognition in Aqueous Solutions

在有机动力学计划的这个项目中，Francois N.Diederich教授将在加州大学洛杉矶分校(UCLA)化学系研究“环芳烃研究水溶液中的分子识别原理”。分子识别是研究在两个或多个化学物种之间形成并通过分子间力(非共价键)将其结合在一起的设计的多分子实体和组件。这一引人入胜和充满活力的研究领域在世界范围内被公认为化学领域重要的智力和技术前沿。这些研究将为新宿主的设计提供指导方针，并为生物分子的工作原理提供新的见解。对于那些对设计新的受体有兴趣的科学家来说，这些信息特别有价值，这些受体可以选择性地从人类废水或体液中清除有毒分子。这项研究涉及一种综合的合成、物理、有机和计算方法来解释水溶液中的非极性络合作用。水的作用将在水溶液和有机溶液的比较研究中确定。对于这些研究，一系列独特的具有非极性结合腔的环番受体已经可用，其他受体将准备达到特定的目标。滴定微量热法用于准确测定水溶液和有机溶液中非极性络合过程的一整套热力学参数。氢-氚同位素、盐和缓冲对非极点缔合的影响也在研究中。

In this project in the Organic Dynamics Program, Professor Francois N. Diederich will investigate "Cyclophanes to Study Principles of Molecular Recognition in Aqueous Solutions" in the Chemistry Department at the University of California, Los Angeles (UCLA). Molecular recognition is the study of designed polymolecular entities and assemblies formed between two or more chemical species and held together by intermolecular forces, the noncovalent bond. This fascinating and dynamic research area is recognized worldwide as an important intellectual and technological frontier in chemistry. These studies will lead to guidelines for the design of new hosts and to new insight into the workings of biological molecules. This information is especially valuable for those scientists interested in designing new receptors to selectively remove toxic molecules from waste waters or bodily fluids in humans. This study involves a comprehensive synthetic, physical organic, and computational approach to explain apolar complexation in aqueous solutions. The role of water will be defined in comparative investigations in aqueous and organic solutions. For these studies, a unique series of cyclophane receptors with apolar binding cavities is already available, and others will be prepared to reach specific objectives. Titration microcalorimetry is being used for accurate determination of the complete set of thermodynamic quantities for apolar complexation processes in aqueous and organic solutions. Hydrogen-deuterium isotope, salt, and buffer effects on apolar association are also being studied.