Long-Range Electron Transfer in Binuclear Metal Complexes: Testing the Role of Tunneling Energy

加州理工学院的Harry B. Gray和Jay R. Winkler教授的这项研究是由无机、生物无机和有机金属化学项目资助的。这项研究的目的是探索电子隧穿（超级交换）在通过蛋白质等材料的远程电子转移中的作用。这种类型的电子转移对桥和供体和受体之间的能量差极为敏感。联苯桥将用于连接两个金属离子，通过一组共同的桥接配体的隧穿能量的影响将通过改变电子供体和受体金属离子来决定。电子转移反应是最简单的化学转化，因为电子从供体转移到受体时不会形成或破坏化学键。当氧化还原伙伴被长距离分离时，电子转移的速率由中间介质介导。本研究将研究电桥中电子态与供体和受体金属离子电子态之间能量差的影响。

This research of Professors Harry B. Gray and Jay R. Winkler of the California Institute of Technology is funded by the Inorganic, Bioinorganic and Organometallic Chemistry Program. The research is aimed at probing the role of electron tunneling (super exchange) in long range electron transfer through materials such as proteins. Electron transfer of this type is extremely sensitive to the difference in energy between the bridge and those of the donor and acceptor. Biphenylene bridges will be used to link two metal ions and the effects of tunneling energy through a common set of bridging ligands will be determined by varying both the electron donor and acceptor metal ions. Electron-transfer reactions are the simplest of chemical transformations in that no bonds are formed or broken as the electron migrates from the donor to the acceptor. When the redox partners are separated by long distances, the rate of electron transfer is mediated by the intervening medium. This research will study the effects of energy differences between electronic states in the bridge and those of the donor and acceptor metal ions.