CAREER: Controlling non-adiabatic reaction dynamics in solution: A window on the fundamental details of photochemical reactions

职业：控制溶液中的非绝热反应动力学：了解光化学反应基本细节的窗口

• 批准号: 1151555
• 负责人: Christopher Elles
• 金额: $ 65万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1151555&HistoricalAwards=false
• 关键词: CAREER; Controlling; non; adiabatic; reaction

With support from the Chemical Structure, Dynamics, and Mechanisms Program in the Chemistry Division of the National Science Foundation, a group led by Professor Christopher Elles at the University of Kansas will study the ultrafast excited-state dynamics of color-changing photochromic molecular switches using time-resolved spectroscopy. Their research will probe the fundamental details that control the transformations of these molecules from one isomer to another following absorption of one or more photons. For example, different excitation schemes allow the dynamics through a conical intersection to be probed via different reaction pathways. Selectively controlling the dynamics for a range of model compounds will provide new insight on the non-adiabatic transitions that are ubiquitous in photochemistry and photophysics, in addition to providing detailed insight on the properties and limitations of the photochromic compounds that will be studied. The results of these experiments will be widely applicable to understanding the dynamics of photon-initiated chemical reactions. In addition to the broad scientific impact, this five-year program also includes an educational outreach program that will train future science teachers to incorporate advanced topics into the high school curriculum. The educational program will engage undergraduate students enrolled in the UKanTeach teacher licensure program and work with them to develop novel lesson plans that will translate key concepts from the field of chemical dynamics into the classroom. Providing meaningful scientific training for prospective secondary science teachers will enhance the impact of the research and invigorate the high school curriculum with a direct connection to modern research.

在美国国家科学基金会化学部化学结构、动力学和机制项目的支持下，堪萨斯大学克里斯托弗·埃莱斯教授领导的一个小组将利用时间分辨光谱研究变色光致变色分子开关的超快激发态动力学。他们的研究将探索控制这些分子在吸收一个或多个光子后从一种异构体转变为另一种异构体的基本细节。例如，不同的激励方案允许通过不同的反应路径来探测通过锥形相交的动力学。选择性地控制一系列模型化合物的动力学将为光化学和光物理学中普遍存在的非绝热跃迁提供新的见解，此外还将为将要研究的光致变色化合物的性质和局限性提供详细的见解。这些实验结果将广泛应用于理解光子引发的化学反应动力学。除了广泛的科学影响外，这个为期五年的计划还包括一个教育推广计划，该计划将培训未来的科学教师将高级主题纳入高中课程。该教育计划将吸引参加UKanTeach教师执照计划的本科生，并与他们一起制定新颖的课程计划，将化学动力学领域的关键概念转化为课堂。为未来的中学科学教师提供有意义的科学培训将提高研究的影响，并为与现代研究直接联系的高中课程注入活力。

项目成果

Femtosecond Stimulated Raman Scattering from Triplet Electronic States: Experimental and Theoretical Study of Resonance Enhancements

• DOI: 10.1021/acs.jpca.9b05955
• 发表时间: 2019-09-12
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY A
• 影响因子: 2.9
• 作者: Barclay, Matthew S.;Caricato, Marco;Elles, Christopher G.
• 通讯作者: Elles, Christopher G.

Ultrafast Dynamics of Encapsulated Molecules Reveals New Insight on the Photoisomerization Mechanism for Azobenzenes

• DOI: 10.1021/acs.jpclett.8b03070
• 发表时间: 2019-01-03
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
• 影响因子: 5.7
• 作者: Otolski, Christopher J.;Raj, A. Mohan;Elles, Christopher G.
• 通讯作者: Elles, Christopher G.

Investigation of Fluorescence Emission from CdSe Nanorods in PMMA and P3HT/PMMA Films

PMMA 和 P3HT/PMMA 薄膜中 CdSe 纳米棒的荧光发射研究

• DOI: 10.1021/jp404585j
• 发表时间: 2013
• 期刊: The Journal of Physical Chemistry C
• 作者: Sarkany, Lorinc;Wasylenko, Jenna M.;Roy, Santanu;Higgins, Daniel A.;Elles, Christopher G.;Chikan, Viktor
• 通讯作者: Chikan, Viktor