美国洛斯阿拉莫斯国家实验室Thomas J. Meyer (电子转移)
Electron Transfer in Molecular Assemblies
Thomas J. Meyer
Thomas J. Meyer is in the Board on Chemical Sciences and Technology of the book, Beyond the Molecular Frontier: Challenges for Chemistry and Chemical Engineering (2003).
Thomas J. Meyer
Kenan Professor of Chemistry, University of North Carolina at Chapel Hill
Kenan Labs A506 Phone:
Fax: (919) 962-6320
Professional Background: Ph.D.,Stanford University(1966); B.S., Ohio University(1963).
Prof. Meyer is currently on a leave of absence from UNC-Chapel Hill. While at Los Alamos National Laboratory he will continue to conduct and manage his research projects, but will not be accepting new graduate students at UNC-CH.
Transition metal complexes have many properties which can be used to gain insight into fundamental processes and more applied problems including catalysis and solar energy conversion. Of primary concern to my group are studies of (1) Electron transfer, (2) Photochemistry and excited states and how they can be used in energy conversion processes, (3) Catalysts for oxidation and reduction in solution and attached to surfaces, polymers, or semi-conductor electrodes, (4) Chemical models for enzyme-catalyzed reactions such as water oxidation and nitrite reduction, (5) Preparation and characterization of metal complex containing polymers having interesting excited state or catalytic properties, (6) Photochemical and catalytic properties of thin polymeric films on electrodes, (7) Molecular assemblies for studies in artificial photosynthesis and molecular devices.
They want to find out at the molecular level how electron transfer occurs. With this knowledge in hand, can we learn how to control the direction and rate of electron flow in molecular assemblies? Can we prepare molecular assemblies that have the functional properties of the reaction center of photosynthesis? Can the equivalent of a p/n junction at the molecular level be created by combining synthesis and transient laser spectroscopic techniques and electrochemistry to monitor electron transfer?
The excited states of metal complexes are being investigated by emission spectroscopy and laser photolysis with uv-visible, IR, and resonance Raman monitoring. These studies are leading to a clearer understanding of the molecular properties that control excited state decay and photochemistry. These complexes provide building blocks for preparing molecular assemblies for the study of long range electron and energy transfer.
They have prepared a series of ruthenium and osmium complexes which are catalysts for oxidation or reduction of many inorganic or organic molecules. These reactions include epoxidation and oxidation of alcohols to ketones or aldehydes. They study the mechanisms of these reactions and others such as reduction of nitrite and dinitrogen and the oxidation of water to dioxygen.
MicrostructureFormation in Thin PolymericFilms.
Methods have been developed for incorporating metal complexes into thin polymeric films on electrodes. They are investigating the fabrication of controlled microstructures within these films by electrochemistry and photochemistry. Images can be created by using masking techniques and size-selective membranes by using photolysis to create molecular voids.
化学与化工所面临的挑战Beyond the Molecular Frontier: Challenges for Chemistry and Chemical Engineering (2003)
2002年美国化学会国家奖获得者 (ACS 2002 National Award Recipients)
Summary by 李晓霞 on 2003-06-16
Last updated by 李晓霞 on 2003-06-16