Water Organization at Environmental Interfaces by Phase-Sensitive Sum Frequency

环境界面处的水组织（按相敏和频率）

• 批准号: 1111762
• 负责人: Heather Allen
• 金额: $ 56.5万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1111762&HistoricalAwards=false
• 关键词: Water; Organization; Environmental; Interfaces; Phase

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.

化学系的环境化学科学（ECS）计划将支持俄亥俄州州立大学的石楠艾伦教授的研究计划。艾伦教授和她的学生将开发和应用相敏振动和频发生（PS-VSFG）光谱学，以研究水的组织和取向作为空气/水盐界面振动频率的函数。研究将包括空气-水界面调查的一价和二价离子，以前没有调查使用PS-VSFG。这些研究将阐明这些离子如何以及在何种程度上在空气-水界面上组织水，所研究的化学系统与海洋和大陆区域的大气气溶胶化学直接相关。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的相关性，其中所研究的离子是海洋表面沃茨的常见成分。这项研究将为本科生和研究生提供一个极好的教育机会，在化学和大气科学的接口进行基础研究项目。