Water Organization at Environmental Interfaces by Phase-Sensitive Sum Frequency

化学学部的环境化学科学（ECS）项目将支持俄亥俄州立大学Heather Allen教授的研究项目。Allen教授和她的学生将开发和应用相敏振动和频率产生（PS-VSFG）光谱来研究水的组织和取向作为空气/水盐界面振动频率的函数。研究将包括一价和二价离子的空气-水界面研究，这些研究以前没有使用PS-VSFG进行过研究。这些研究将阐明这些离子如何以及在多大程度上在空气-水界面组织水。所研究的化学系统与海洋和大陆地区的大气气溶胶化学有直接关系。这项研究将增加我们对气溶胶老化过程的理解。此外，这些相同的系统与在分子水平上理解海洋表面有直接关系，其中所研究的离子是海洋表层水的共同成分。本研究将为本科生和研究生提供一个良好的教育机会，在化学和大气科学的界面上进行基础研究项目。

The Environmental Chemical Sciences (ECS) program of the Division of Chemistry will support the research program of Prof. Heather Allen of Ohio State University. Prof. Allen and her students will develop and apply phase sensitive vibrational sum frequency generation (PS-VSFG) spectroscopy to investigate water organization and orientation as a function of vibrational frequency at air/aqueous salt interfaces. Research will encompass air-aqueous interfacial investigations of mono- and divalent ions which have not been investigated previously using PS-VSFG. These studies will elucidate how and to what extent these ions organize water at the air-aqueous interface.The chemical systems to be studied have direct relevance to atmospheric aerosol chemistry of marine and continental regions. The study will increase our understanding of the aging processes of aerosols. Additionally, these same systems have direct correlation with understanding the surface of the ocean at a molecular level where the ions investigated are common constituents of the ocean surface waters. The study will provide an excellent educational opportunity for undergraduate and graduate students to carry out a fundamental research project at the interface of chemistry and atmospheric sciences.