Instrumentation for Infared and Raman Spectroscopy Facility

红外和拉曼光谱设备仪器

• 批准号: 9808180
• 负责人: Robert Osteryoung
• 金额: $ 8.4万
• 依托单位: North Carolina State University
• 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: 1998-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9808180&HistoricalAwards=false
• 关键词: Instrumentation; Infared; Raman; Spectroscopy; Facility

This award from the Chemistry Research Instrumentation and Facilities Program (CRIF) will assist the Department of Chemistry at North Carolina State University to acquire a nanosecond time resolution, step-scan Fourier-transform infrared (FTIR) spectrometer bench with FTIR microscope and attenuated total reflection (ATR) attachment. Step-scan FTIR spectroscopy will be used to observe enzyme intermediates in novel dehalogenating enzymes and structural dynamics that accompany electron transfer in iron-sulfur dendrimers, to determine time scales for substrate interactions with enzyme binding sites and for conformation changes in the flexible framework of halozeotype micropores. FTIR in ATR mode will be used to measure the vibrational spectrum of opaque crystals and polymers. Fourier-transform infrared (FTIR) spectroscopy has become a very powerful tool in recent years. Improvements in the stability and reproducibility of interferometers have resulted in significantly improved sensitivity in FTIR spectrometers. New FTIR sample geometries, including grazing incidence and attenuated total reflection spectroscopy, have increased the repertoire of samples to include opaque crystals, surfaces and polymers.

该奖项由化学研究仪器和设施 计划（CRIF）将协助化学系在北 卡罗莱纳州立大学获得纳秒时间分辨率， 一种带FTIR步进扫描FTIR光谱仪工作台 显微镜和衰减全反射（ATR）附件。 步进扫描 FTIR光谱将用于观察新的酶中间体， 脱卤酶和伴随电子的结构动力学 铁硫树枝状聚合物中的转移，以确定 底物与酶结合位点的相互作用和构象 在halozeotype微孔的柔性框架的变化。 ATR中的FTIR 模式将用于测量不透明晶体的振动光谱 和聚合物。 傅里叶变换红外（FTIR）光谱已成为一个非常强大的 近年来的工具。 稳定性和重现性的改善 干涉仪的使用大大提高了灵敏度， FTIR光谱仪。 新的FTIR样品几何形状，包括掠射 入射和衰减全反射光谱，增加了 样本库包括不透明晶体、表面和 聚合物