Nanoscale Sensing of the Chemistry and Self-Assembly of Molecules at Interfaces Using Scanning Probe Microscopy

该奖项由化学学部实验物理化学项目资助，哥伦比亚大学George W. Flynn教授及其博士后、研究生和本科生同事将使用扫描隧道显微镜（STM）和扫描隧道光谱（STS）研究：表面的二维自组装，二维碳（石墨烯）片的电子和化学性质以及发生在环境重要的氧化铁表面的化学反应。在这个影响广泛的项目中，弗林教授和他的同事将使用扫描隧道方法——包括显微镜和光谱学——来检查各种系统的分子水平细节。他们将研究分子如何在表面上自组装成图案——理解这种行为机制的能力将帮助其他人学习如何设计和组装分子级设备。他们将研究有机污染物如何在氧化铁表面降解，以便制定更好的策略来理解和修复地下土壤污染的影响。最后，将对引人入胜的材料石墨烯进行研究，开始了解这种纳米级碳材料的化学和物理性质。除了该奖项所支持的研究可能产生的社会效益外，弗林教授将继续他的许多外展和服务活动。

In this award, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. George W. Flynn of Columbia University and his postdoctoral fellows and graduate and undergraduate student colleagues will use scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) to study: two-dimensional self-assembly at surfaces, the electronic and chemical properties of two-dimensional carbon (graphene) sheets and the chemistry taking place at environmentally important iron oxide surfaces. In this wide-reaching program, Prof. Flynn and his colleagues will use scanning tunneling methods -- both microscopy and spectroscopy -- to examine the molecular level details of a variety of systems. They will examine how molecules self-assemble into patterns on surfaces -- the ability to understand the mechanisms of this behavior will help others learn how to design and assemble molecular-level devices. They will examine how organic pollutants degrade on the surface of iron oxide surfaces, in order to develop better strategies for understanding and remediating the effects of subsurface soil pollution. Finally, studies of the fascinating material graphene will be conducted to begin to learn about this nanoscopic carbon material''s chemical and physical properties. Besides the possible societal benefits accruing from the research supported in this award, Prof. Flynn will continue with his many outreach and service activities.