Reactive Collisions and Soft-Landing of Polyatomic Ions at Surfaces

这项研究项目在分析和表面化学计划的支持下，重点研究多原子离子在表面反应碰撞和软着陆的基本原理。普渡大学的库克斯教授和他的学生们将把自组装单分子膜上的软着陆离子与落入真空兼容液膜中的离子进行对比。可用于与这两个表面上的撞击多原子离子反应的官能团将被改变，以控制由这些碰撞产生的反应产物的性质。在开展这项工作时，将建造新的多四极仪器，并与现有的多部门质谱仪一起使用。该项目将为学生在质谱学和表面科学领域提供强大的教育体验。发生在涉及投射多原子离子反应物的表面上的化学反应的性质仍然知之甚少。库克斯教授和他在普渡大学的学生将研究这些多原子离子与一系列表现出不同化学性质的表面之间发生的化学反应。这项工作的长期目标是开发新的方法来表征发生在表面上的化学反应，并产生具有所需化学特征的表面。这项工作的结果将在依赖于具有可控化学和物理性质的表面的应用中具有技术价值。

This research project, supported by the Analytical and Surface Chemistry Program, focuses on the study of fundamentals of reactive collisions and soft-landing of polyatomic ions at surfaces. Professor Cooks and his students at Purdue University will contrast soft-landed ions at self-assembled monolayers with landing into vacuum-compatible liquid films. The functional groups available for reaction with impinging polyatomic ions at both of these surfaces will be varied to control the properties of the reaction products produced by these collisions. New multi-quadrupole instrumentation will be built and used in conjunction with existing multi-sector mass spectrometry instrumentation in pursuing this work. This project will provide a strong educational experience for students in the areas of mass spectrometry and surface science. The nature of chemical reactions that occur at surfaces involving projected polyatomic ion reactants remains poorly understood. Professor Cooks and his students at Purdue University will study the chemical reactions occurring between these polyatomic ions and a range of surfaces that exhibit diverse chemical properties. The long-term objective of this work is to develop new methods for the characterization of chemical reactions that occur at surfaces and to produce surfaces that have desired chemical features. The results of this work will have technological value in applications that depend on having surfaces with controlled chemical and physical properties.