NSF Young Investigator: Surface Induced Dissociation of Molecular Ions at Self-Assembled Monolayers

这个国家科学基金会青年研究员项目是在分析化学的一般领域，特别关注表面化学。在该奖项的五年任期内，汉利教授和他的学生将研究高通量分子离子束撞击自组装单分子膜时发生的反应。这次碰撞产生的碎片，当被质谱仪分析时，产生了关于母离子结构的有价值的信息。利用X射线光电子能谱、红外反射吸收和热脱附等技术对离子-表面碰撞前后的表面状态进行了研究，并对表面诱导解离过程的机理进行了探讨。在本研究项目期间，还将探索将这些分子离子束用于纳米结构的表面光刻和等离子体聚合化学。这个项目应该为分子离子与特征良好的表面碰撞时发生分子碎裂的机制提供重要的见解。这种方法，当与质谱学检测结合使用时，可以区分结构相似的分子。此外，这一奖项将使汉利教授能够进一步发展他作为伊利诺伊大学芝加哥分校研究员和教育工作者的全面专业发展。

This National Science Foundation Young Investigator project is in the general area of analytical chemistry, with a specific focus on surface chemistry. During the five-year tenure of this award, Professor Hanley and his students will examine the reactions that occur when a high flux molecular ion beam impinges on a self-assembled monolayer. The fragments from this collision, when analyzed by mass spectrometry, yield valuable information about the structure of the parent ion. The state of the surface before and after the ion-surface collision will be probed using techniques such as x-ray photoelectron spectroscopy, infrared reflection absorption, and thermal desorption, and these experiments will allow the mechanisms of the surface induced dissociation process to be investigated. The use of these molecular ion beams for surface lithography of nanostructures and for plasma polymerization chemistry will also be explored during the course of this research project. This project should provide important insights into the mechanisms of molecular fragmentation occuring when molecular ions collide with a well-characterized surface. This approach, when used in conjunction with mass spectrometric detection, allows structurally similar molecules to be distinguished. Additionally, this award will enable Professor Hanley to further his overall professional development as a researcher and educator at the University of Illinois at Chicago.