Photochemistry and Photophysics of Transition Metal Complexes

过渡金属配合物的光化学和光物理学

• 批准号: 9726999
• 负责人: James Demas
• 金额: $ 38.4万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-15 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726999&HistoricalAwards=false
• 关键词: Photochemistry; Photophysics; Transition; Metal; Complexes

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program provides continued support to Dr. James N. Demas of the Chemistry Department, University of Virginia, for research on use of luminescent transition metal complexes for sensors and molecular probes. Dr. Benjamin DeGraff of James Madison University will collaborate on this research which will involve undergraduate as well as graduate and postdoctoral students. New complexes containing Ru, Re, Os, and Ir will be synthesized and tested as sensors for oxygen gas, carbon dioxide, and acidity. Heterogeneous behavior in solution (e.g., soluble polymers, vesicles) and in solid supports (e.g., polymers, silicas) will be examined in order to understand microheterogeneous interactions that affect sensor probe performance. Many methods will be used to determine the photophysics and photochemistry of the new systems and how they are perturbed by interaction with surfaces, including time resolved emission spectroscopy, transition absorption spectroscopy, steady-state luminescence, global luminescence decay analysis, gas solubility and oxygen diffusion measurements, dynamic polarization anistropy measurements, solvatochromic probes, temperature dependence studies, crystallography and molecular modeling. Oxygen, carbon dioxide, and acidity levels change during many common biological and industrial processes. By monitoring the levels of these chemicals, the amount of reaction products or impurities can be determined. The goal of this research is to develop stable, durable sensors that could be used in many industrial, medical, and environmental applications. The luminescent compounds investigated are potentially useful in biomedical monitoring, fluoroimmunoassay, industrial process control, wind tunnel sensors, biological oxygen demand, bioreactors, and environmental monitoring.

该奖项在无机，生物无机和有机化学 该计划继续支持詹姆斯·N博士。化学的德玛斯 部门，弗吉尼亚大学，研究使用发光 用于传感器和分子探针的过渡金属络合物。 博士 詹姆斯麦迪逊大学的本杰明·德格拉夫将在这方面进行合作 研究，这将涉及本科生以及研究生和 博士后研究生。 含Ru、Re、Os和Ir的新配合物将 合成并测试作为氧气，二氧化碳， 酸度 溶液中的非均相行为（例如，可溶性聚合物， 囊泡）和固体支持物（例如，聚合物、二氧化硅）将被 为了理解微观异质性相互作用， 影响传感器探头性能。 将使用多种方法来确定 新系统的光物理学和光化学，以及它们是如何 受与表面相互作用的扰动，包括时间分辨发射 光谱学，跃迁吸收光谱学，稳态 发光，整体发光衰减分析，气体溶解度和 氧扩散测量，动态极化各向异性 测量，溶致变色探针，温度依赖性研究， 晶体学和分子建模。 氧气、二氧化碳和酸度水平在许多常见的 生物和工业过程。 通过监测这些物质的水平 化学品，反应产物或杂质的量可以是 测定 本研究的目标是开发稳定、耐用、 传感器可用于许多工业，医疗和环境 应用. 研究的发光化合物是潜在的 可用于生物医学监测、荧光免疫测定、工业过程 控制，风洞传感器，生物需氧量，生物反应器，和 环境监测