Dynamics of Mesoscopically Structured Molecular Liquids

介观结构分子液体的动力学

• 批准号: 1461477
• 负责人: Michael Fayer
• 金额: $ 75万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1461477&HistoricalAwards=false
• 关键词: Dynamics; Mesoscopically; Structured; Molecular; Liquids

With this award, the Chemical Structure, Dynamics and Mechanisms (CSDM-A) Program of the Division of Chemistry is funding Professor Michael Fayer of Stanford University to conduct experimental studies to examine the behavior of a number of molecules that show interesting and unusual liquid-phase behavior. Among the liquids to be studied are liquid crystals (used in LCD devices), ionic liquids (salts that melt at low temperatures, which show promise as more benign solvents), supercooled liquids (systems that remain liquid below the normal freezing point), and aqueous surfactant systems (which mimic cell membranes). The graduate students working on this project will receive state-of-the-art training in ultrafast laser science, while working on chemical problems with real-world impact. For part of his educational activities, Prof. Fayer and his research students will be working with high school students through Stanford's Inspiring Future Scientists in Chemistry Program. Prof. Michael Fayer and his research group will use ultrafast spectroscopy to probe transient structures and dynamics in complex liquids. The specific studies include: (1) a study of the dynamics of liquid crystals and supercooled liquids via optical heterodyne detected optical Kerr effect (OHD-OKE) and 2D-IR spectroscopy; (2) a study of the changes in dynamical properties of ionic liquids with small amounts of co-solvents by OHD-OKE, 2D-IR and time-reolved fluorescence spectroscopy; (3) measurement of the properties of surfactant layer and bilayer structures with OHD-OKE and 2D-IR spectroscopies. Researchers working on this project will receive excellent technical training in laser science and cutting edge optical methods. The inclusion of high school students in the research in the Fayer laboratory stands out as a relatively uncommon engagement with the broader community.

化学系的化学结构、动力学和机理(CSDM-A)项目获得这一奖项，资助斯坦福大学的Michael Fayer教授进行实验研究，以检查一些显示出有趣和不寻常的液体行为的分子的行为。要研究的液体包括液晶(用于LCD设备)、离子液体(在低温下熔化的盐类，有望成为更良性的溶剂)、过冷液体(在正常冰点以下保持液体的系统)和水基表面活性剂系统(模拟细胞膜)。从事这个项目的研究生将接受最先进的超快激光科学培训，同时研究具有现实世界影响的化学问题。作为他的教育活动的一部分，Fayer教授和他的研究学生将通过斯坦福大学鼓舞人心的未来化学科学家计划与高中生合作。Michael Fayer教授和他的研究小组将使用超快光谱学来探测复杂液体中的瞬变结构和动力学。具体研究内容包括：(1)用光学外差检测光学克尔效应(OHD-OKE)和2D-IR光谱研究液晶和过冷液体的动力学；(2)用OHD-OKE、2D-IR和时间分辨荧光光谱研究离子液体与少量共溶剂的动力学性质的变化；(3)用OHD-OKE和2D-IR光谱测量表面活性剂层和双层结构的性质。从事该项目的研究人员将接受激光科学和尖端光学方法方面的出色技术培训。将高中生纳入费耶尔实验室的研究，是在更广泛的社区中相对不寻常的接触。