RUI: Ion Pairing and Aggregation of Bis(trifluoromethanesulfonyl) amide Ionic Liquids in Media of Low Polarity

RUI：低极性介质中双（三氟甲磺酰）酰胺离子液体的离子对和聚集

• 批准号: 0842960
• 负责人: Markus Hoffmann
• 金额: $ 23.63万
• 依托单位: SUNY College at Brockport
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0842960&HistoricalAwards=false
• 关键词: RUI; Ion; Pairing; Aggregation; Bis

In this project funded by the Experimental Physical Chemistry Program, Professor Markus Hoffmann of The College at Brockport, State University of New York, and his students will investigate the ion pairing and aggregation behavior of ionic liquids dissolved in low polarity solvents. Specific focus will be on ionic liquids containing the bis (trifluoromethansulfonyl) amide anion, which have unusually long ion-pairing lifetimes in these low polarity solvents. The research will employ nuclear magnetic resonance (NMR) methods, specifically diffusion ordered spectroscopy (DOSY), to measure molecular diffusion parameters. The NMR data will be augmented by classical viscometric, conductivity and tensiometric measurements. Additional calorimetric studies, done in collaboration with Prof. Dr. Ondruschka and Dr. Stark from the Institute for Technical Chemistry and Environmental Chemistry at the Friedrich-Schiller-University (FSU) in Jena, Germany, are expected to result in a complete thermodynamic description of the ion-pairing and aggregation equilibria.Ionic liquids have been the subject of increasing interest in science and industry because they have the potential to replace traditional organic solvents that are volatile and hazardous. This research will contribute to our fundamental understanding of ionic liquids, and in particular the connection between their intermolecular (and inter-ionic) interactions and their observed bulk behavior. The participating undergraduate students will benefit immensely from the research experiences with respect to their professional preparation. In this regard, the additional involvement of ACS SEED high school students is a valuable contribution to encourage students from underrepresented groups early in their educational development to pursue careers in the sciences. In an attempt to bring the excitement of research into the chemistry curriculum at The College at Brockport some of the experiments will also be integrated as project-based experiments into the physical chemistry laboratory

在这个由实验物理化学计划资助的项目中，纽约州立大学布罗克波特学院的Markus Hoffmann教授和他的学生将研究离子液体溶解在低极性溶剂中的离子配对和聚集行为。具体的重点将是离子液体含有双（三氟甲磺酰基）酰胺阴离子，这在这些低极性溶剂中具有异常长的离子配对寿命。该研究将采用核磁共振（NMR）方法，特别是扩散有序光谱（DOSY）来测量分子扩散参数。核磁共振数据将增加经典的粘度，电导率和张力测量。与德国耶拿弗里德里希-席勒大学（FSU）技术化学和环境化学研究所的Ondruschka教授和Stark博士合作进行的其他量热研究，预计将导致离子的完整热力学描述-离子液体已经成为科学和工业中越来越感兴趣的主题，因为它们具有潜在的取代传统的挥发性和危险的有机溶剂。这项研究将有助于我们对离子液体的基本理解，特别是它们的分子间（和离子间）相互作用与它们观察到的本体行为之间的联系。参与的本科生将从他们的专业准备方面的研究经验中受益匪浅。在这方面，ACS种子高中学生的额外参与是一个宝贵的贡献，鼓励学生从代表性不足的群体在他们的教育发展早期追求科学事业。为了将研究的兴奋带入布罗克波特学院的化学课程中，一些实验也将作为基于项目的实验整合到物理化学实验室中