Solution and Gas-Phase Photochemistry Involving Multiple and Delocalized Excited States

普渡大学的Harry Morrison教授将在化学系有机动力学项目的资助下开展一个项目，重点研究电子能量通过“光子线”运动的局限性和后果。这些是发色团的集合，它们依附于或合并到一个被动框架中，特别是在目前的情况下，被动框架是类固醇环系统。“天线”发色团吸收的电子激发转移到远端，形式上未共轭的基团，可能会产生化学反应或猝灭，这取决于基团，莫里森教授将确定每种基团的基本规则。这项研究将辅以平行的理论和实验研究，目的是确定轨道通过空间混合在确定这种基本规则方面的作用。这些研究将部分通过与其他机构的高级合作者进行合作研究来完成。我们将进一步努力了解第二激发态在独立光化学中的作用。光在信息传输、存储和检索中的应用正在改变着现代社会。该项目将产生与在有机分子尺度上使用光调制信息传输能力相关的基本结果。它还将用理论计算来支持实验结果，从而形成一个普遍的图景。

Professor Harry Morrison of Purdue University will conduct a project with funding from the Organic Dynamics Program of the Chemistry Division emphasizing the study of the limitations and consequences of movement of electronic energy through `photonic wires.` These are assemblies of chromophores pendant on or incorporated into a passive framework, and in particular in the present case the passive framework is the steroid ring system. The transfer of electronic excitation absorbed by `antenna` chromophores to distal, formally unconjugated, groups may produce chemistry or quenching, depending on the groups, and Professor Morrison will be determining the ground rules for each. The study will be complemented by parallel theoretical and experimental studies intended to determine the role of through space mixing of orbitals in determining such ground rules. These studies will be accomplished in part by cooperative studies with senior collaborators at other institutions. An added effort will be made to understand the role of the second excited singlet state in indene photochemistry. The use of light in information transmission, storage, and retrieval is changing modern society. This project will generate basic results pertinent to the ability to use light in modulation of information transmission on the scale of an organic molecule. It will also support experimental results with theoretical calculations which allow a generalized picture to be developed.