International Collaboration in Chemistry: Disentangling deactivation pathways in DNA bases & model systems using time-resolved photoelectron spectroscopy & three pulse tech

国际化学合作：解开 DNA 碱基失活途径

• 批准号: 0924456
• 负责人: Susanne Ullrich
• 金额: $ 45.5万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2014-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0924456&HistoricalAwards=false
• 关键词: International; Collaboration; Chemistry; Disentangling; deactivation

In this project funded by the Experimental Physical Chemistry Program and the Office of International Science and Engineering, Professor Susanne Ullrich of the University of Georgia and her research group will employ time-resolved photoelectron spectroscopy (TRPES) to study the relaxation pathways of photoexcited biologically relevant molecules. The Ullrich group will collaborate with Professor Vasilios Stavros of Warwick University in Coventry, UK, who is a specialist in a technique called time-resolved velocity map imaging (TRVMI). The combination of these two ultrafast techniques is expected to reveal the order underlying the many overlapping electronic states typical of polyatomic molecules and how these states interact with one-another. Initial experiments will focus on 1H-Pyrrole, 1H-Pyrazole, and 1H-imidazole species, followed by research on the DNA base species.The results of this research will have broad implications in photochemistry, photobiology, and even nanotechnology. In addition, this US - UK collaborative effort will involve the exchange of professors and students between the two laboratories. Students involved in the research will therefore benefit from a highly interdisciplinary (chemistry, physics, biology) and international experience as well.

在这项由实验物理化学计划和国际科学与工程办公室资助的项目中，佐治亚大学的Susanne Ullrich教授和她的研究小组将使用时间分辨光电子能谱(TRPES)来研究光激发生物相关分子的弛豫路径。Ullrich团队将与英国考文垂华威大学的Vasilios Stavros教授合作，Vasilios Stavros教授是一种名为时间分辨速度图成像(TRVMI)技术的专家。这两种超快技术的结合有望揭示多原子分子典型的许多重叠电子态的基本顺序，以及这些电子态是如何相互作用的。最初的实验将集中在1H-吡咯、1H-吡唑和1H-咪唑物种上，然后是DNA碱基物种的研究。这一研究结果将在光化学、光生物学甚至纳米技术方面具有广泛的意义。此外，这项美英合作努力将涉及两个实验室之间的教授和学生交流。因此，参与研究的学生将从高度跨学科(化学、物理、生物)和国际经验中受益。