Purchase of Equipment for Picosecond Domain Measurements

购买皮秒域测量设备

• 批准号: 9214969
• 负责人: Joseph Templeton
• 金额: $ 8.27万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214969&HistoricalAwards=false
• 关键词: Purchase; Equipment; Picosecond; Domain; Measurements

The Department of Chemistry at the University of North Carolina at Chapel Hill is requesting funds for the purchase of picosecond laser equipment and ancillary electronic and optical devices. These acquisitions will supplememt present research capabilities for a multiplicity of programs requiring picosecond time resolution, for example, transient absorption, dynamics of photo-driven events and characterization of nonlinear optical properties of materials. Included in the research proposed with this equipment are: 1) Light induced electron and energy transfer in transition metal complexes. 2) Directed electron and energy transfer in peptide assemblies. 3) Electron transfer rates in polymeric solvents: slow solvent dipoles. 4) Glasses of polymeric layered ultra-structure for optimum nonlinear optical responses. 5) Characterization of short-lived unsaturated organometallic complexes using transient absorption spectroscopy. 6) Multiphoton ionizationn via short lived Rydberg states and real time dynamics in weakly bound complexes. The system will be available to all members of the UNC scientific community. The instruments requested will all be conjoined with picosecond equipment assembled in the Department's Laser Laboratory, a multiuser facility operating since 1975. %%% Picosecond laser spectroscopy is a method for studying the very rapid ( 1/1,000,000,000,000 of a second) molecular processes that occur in chemical reactions and chemical dynamics. Such studies give one accurate information about the step-by-step details of how a chemical reaction proceeds and often give information about how a chemical process can be altered in order to give different products or make a given process more efficient.

北方大学化学系 查佩尔山的卡罗莱纳正在申请资金购买 皮秒激光设备及辅助电子和光学设备 装置. 这些收购将使研究 用于需要皮秒的多种程序的能力 时间分辨率，例如，瞬态吸收、动态 光驱动事件与非线性光学特性 材料的性质。 建议使用该设备进行的研究包括： 1)过渡金属中的光诱导电子和能量转移 配合物 2)肽组装体中的定向电子和能量转移。 3)高分子溶剂中的电子转移速率：慢溶剂 偶极子 4)聚合物层状超结构玻璃 非线性光学响应 5)短寿命不饱和金属有机化合物的表征 配合物使用瞬态吸收光谱。 6)通过短寿命里德堡态和真实的态的多光子电离 弱束缚复合物中的时间动力学 该系统将向北卡罗来纳大学的所有成员提供 科学界。 所要求的仪器都将是 与安装在国防部 激光实验室，自1975年以来运行的多用户设施。 %%% 皮秒激光光谱学是一种研究 非常快的（1/1，000，000，000，000秒）分子过程 发生在化学反应和化学动力学中。 等 研究提供了一个准确的信息， 化学反应如何进行的细节， 关于如何改变化学过程以 提供不同的产品或使给定的过程更有效。