U.S.-Australia Cooperative Research on Chromophore-Quencher Complexes for Studies in Photochemical Redox Splitting

该奖项支持托马斯迈耶博士之间的合作研究 位于查佩尔山的北卡罗来纳州大学的教授理查德博士 基恩在詹姆斯库克大学，汤斯维尔，澳大利亚。这 一个项目将扩展和扩大国家科学基金会支持的研究计划 其中发色团-猝灭剂（C-Q）络合物的研究 钌和钌的目的是促进基本的了解， 光诱导电子转移过程的一部分。 例如有人 示出了金属-配体电荷转移光激发 （MLCT）状态的钌络合物导致还原猝灭 通过分子内电子转移。 研究表明，MLCT 可以使用钌和钌络合物的激发态 成功地研究了光化学诱导电子， 能量反应。 美国的主要目标是-澳大利亚 合作项目是准备和地球物理研究， 其中电子转移供体和受体 化学连接到MLCT发色团。 为了推动这一领域的发展， 研究，新的配体将被设计，其中空间控制的 可以实现电子转移，以便最大化 形成效率和氧化还原分离的寿命 states. 该项目代表了基恩夫妇之间的出色合作 组（配体修饰的合成方法学）和 Meyer小组（物理学研究）。 这是一个重要的基础 致力于建立新的光化学电子转移系统， 发现能量和电子转移的新过程。

This award supports cooperative research between Dr. Thomas Meyer of the University of North Carolina at Chapel Hill and Dr. Richard Keene at James Cook University, Townsville, Australia. This project will extend and broaden an NSF-supported research program in which the study of chromophore-quencher (C-Q) complexes of ruthenium and rhenium is intended to advance basic understanding of photoinduced electron-transfer processes. For example, it was shown that optical excitation to a metal-to-ligand charge transfer (MLCT) state in one ruthenium complex led to reductive quenching via intramolecular electron transfer. The study showed that MLCT excited states of ruthenium and rhenium complexes could be used successfully in the study of photochemically induced electron and energy reactions. The major objective of this U.S.-Australian cooperative project is the preparation and photophysical study of ruthenium in which electron transfer donors and acceptors are chemically attached to MLCT chromophores. To advance this area of study, new ligands will be designed in which spatial control of electron transfer can be achieved in order to maximize the efficiencies of formation and the lifetime of redox separated states. The project represents excellent collaboration between the Keene group (synthetic methodology for ligand modification) and the Meyer group (photophysical studies). This is important fundamental work in establishing new photochemical electron transfer systems and discovering new processes of energy and electron transfer.