Neutralization-Reionization Mass Spectrometry

中和-再电离质谱法

• 批准号: 9014883
• 负责人: Fred McLafferty
• 金额: $ 26.71万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9014883&HistoricalAwards=false
• 关键词: Neutralization; Reionization; Mass; Spectrometry

This grant is in the general area of analytical and surface chemistry and in the subfield of mass spectrometry. Professor McLafferty of Cornell University will continue his breakthrough work on neutralization reionization mass spectrometry (NRMS). Using NRMS unusual neutral species (biradicals, carbenes, ylides, hypervalent species and clusters) will be prepared and the energy surfaces of these molecules will be studied. Laser photodissociation and luminescence detection will also be used to study the spectroscopic states of these unusual species. Combining optical, mass spectrometric and energy release methods, ring opening and pyrolysis reactions of these small molecules of unusual electronic and molecular structure will be probed. Details of fragmentation mechanisms specific to isomeric species will be a particular focus of this work.

这项资助是在分析和表面化学的一般领域以及在质谱的子领域。康奈尔大学的McLafferty教授将继续他在中和再电离质谱（NRMS）方面的突破性工作。利用NRMS制备了不同寻常的中性物质（双基、卡贝尼、烯类、高价物质和簇），并对这些分子的能面进行了研究。激光光解和发光检测也将用于研究这些不寻常物种的光谱状态。结合光学、质谱和能量释放等方法，探索这些电子和分子结构异常的小分子的开环和热解反应。具体到同分异构体物种破碎机制的细节将是这项工作的一个特别的焦点。