COLLABORATIVE RESEARCH: High Resolution Absorption and Emission Spectroscopy of Diatomic Metal Halides, Nitrides and Dimers

合作研究：双原子金属卤化物、氮化物和二聚体的高分辨率吸收和发射光谱

• 批准号: 1112354
• 负责人: James O'Brien
• 金额: $ 26万
• 依托单位: University of Missouri-Saint Louis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1112354&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Resolution; Absorption; Emission

In this award, the Chemical Structure, Dynamics, and Mechanisms Program supports the collaborative research projects of Professors Leah O'Brien, of Southern Illinois University Edwardsville, and James O'Brien, of the University of Missouri, St. Louis. They and their students will develop an instrument (ILS-FTS) that will integrate intracavity laser absorption spectroscopy with high resolution Fourier transform detection, and will operate in the 9,500-25,000 cm-1 region. The proposed ILS-FTS instrument will utilize the improved resolution and wavelength accuracy made possible with FTS detection, enabling the acquisition of high-resolution spectra of diatomic molecules over a very wide spectral range. The ILS-FTS instrument will be used in: (i) rovibrational electronic studies, such as for PtCl, where lines closer to rotational bandheads can be resolved and utilized in the rotational analysis than is possible currently using traditional methods; and (ii) rovibrational electronic spectra of metal dimers, such as Pt2 and Pd2, where the rotational constants for the molecules are too small to be examined using traditional approaches. The ILS-FTS configuration may be capable of sub-Doppler Lamb-dip (saturation) spectroscopy, allowing detection of molecules with hyperfine interactions and those with smaller rotational constants. Emission studies are also possible with the FTS, which will assist in the search for new metal-ligand molecules. The metal-containing diatomic radicals to be studied are characterized by open shell structures, which give rise to a host of interactions between nuclear, electronic, vibrational, and rotational angular momenta.The work will lead to deeper understanding of metal-ligand interactions and potentially provide insight on metal-catalyzed reactions. The proposed research will foster development of a successful inter-institutional collaboration of faculty and students at a primarily undergraduate institution and a research university. The proposed work will open new areas research, enhance the research infrastructure at both Universities, and will further develop students and faculty with skills in contemporary spectroscopy and instrument development. The project also contains an outreach program that will allow talented high school students to participate in the research.

在该奖项中，化学结构，动力学和机制计划支持伊利诺伊州南部爱德华兹维尔的莉亚·奥布莱恩教授的合作研究项目，以及圣路易斯大学密苏里大学的詹姆斯·奥布莱恩。 他们和他们的学生将开发一种仪器（ILS-FTS），该仪器将与高分辨率傅立叶变换检测相结合，并将在9,500-25,000 cm-1区域中运行。 拟议的ILS-FTS仪器将利用FTS检测的提高分辨率和波长精度，从而使二离子分子的高分辨率光谱在非常宽的光谱范围内获取。 ILS-FTS仪器将在：（i）反振动的电子研究中，例如对于PTCL，在旋转分析中，可以在旋转分析中解析和利用更接近旋转型带头的线，而不是使用传统方法； （ii）金属二聚体（例如PT2和PD2）的振动电子光谱，其中分子的旋转常数太小，无法使用传统方法进行检查。 ILS-FTS构型可能能够进行亚四倍体羊肉浸（饱和度）光谱，从而可以检测具有超细相互作用的分子和具有较小旋转常数的分子。 FTS也可以进行排放研究，这将有助于寻找新的金属配体分子。 要研究的含金属的双原子自由基的特征是开放的壳结构，这会引起核，电子，振动和旋转角动量之间的许多相互作用。这项工作将导致对金属配体相互作用的更深入的了解，并有可能深入了解金属催化反应。 拟议的研究将促进主要是本科机构和研究大学的教职员工和学生成功的机构间合作。 拟议的工作将开放新领域的研究，增强两所大学的研究基础设施，并将进一步发展学生和教师，并具有当代光谱和仪器开发方面的技能。 该项目还包含一个外展计划，该计划将允许才华横溢的高中生参加研究。