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| Research Domain： |
complex molecular systems using ultrafast multi-dimensional infrared and optical methods. |
| Keyword： |
Michael D. Fayer |
| Research Production： |
My research group studies complex molecular systems using ultrafast multi-dimensional infrared and optical methods. The properties of systems, such as molecular complexes, proteins, hydrogen bonding liquids, liquid crystals, or supercooled liquids depend on molecular level dynamics and intermolecular interactions. Bulk properties are frequently a very poor guide to understanding the molecular level details that determine the nature of a chemical process and its dynamics. Because molecules are small, molecular motions are inherently very fast. Recent advances in methodology developed in our labs make it possible for us to observe important processes as they occur. These measurements act like stop-action photography. To focus on a particular aspect of a time evolving system, we employ sequences of ultrashort pulses of light as the basis for non-linear methods such as ultrafast infrared multidimensional vibrational echoes, optical Kerr effect methods, and ultrafast transient absorption experiments.
Because of lack of space, I can only briefly mention the problems that we are investigating. I encourage you to look at our website, and contact me directly to discuss our research.
We are using ultrafast IR vibrational echo spectroscopy and other multi-dimensional IR methods, which we have pioneered, to study dynamics of molecular complexes, water confined on nm lengths scales with a variety of topologies, and proteins. We can probe the structural transformations of these systems. The methods are somewhat akin to multidimensional NMR, but they probe molecular structural evolution in real time on the relevant ultrafast time scales. We are examining the formation and dissociation of organic solute-solvent complexes and the isomerization molecules. We are obtaining direct information on how nanoscopic confinement of water changes its properties, a topic of great importance in chemistry, biology, geology, and materials. In proteins, we are using the vibrational echo methods to study dynamics and the relationship between dynamics and function. We are also developing and applying theory to these problems frequently in collaboration with top theoreticians.
We are studying dynamics in complex liquids, in particular liquid crystals and supercooled liquids and the glass transition using ultrafast optical heterodyne detected optical Kerr effect methods, We can follow processes from tens of femtoseconds to tens of microseconds and longer. Our ability to look over such a wide range of time scales is unprecedented. The change in molecular dynamics when a system undergoes a phase change is of fundamental and practical importance. We are developing detailed theory as the companion to the experiments.
We are studying photo-induced electron transfer and thermal equilibrium electron transfer using ultrafast absorption and multidimensional IR measurements to understand the processes leading to the generation of highly reactive chemical species. We want to understand the role of the solvent and the systems topology on electron transfer dynamics.
We are interested in the most basic questions: how do complex systems of interacting molecules behave at the molecular level? By using advanced experimental methods based on ultrafast laser technology and theory, we are obtaining fundamentally new views of chemical processes. |
| Remarks： |
Title: David Malvane Ehrsam and Edward Curtis Franklin Professor of Chemistry (b. 1947)
Education: B.S., 1969; Ph.D., 1974, University of California at Berkeley
Awards: Dreyfus Teacher-Scholar Award, 1977, American Physical Society Fellow, 1982, Alfred P. Sloan Foundation Fellow, 1982; Guggenheim Fellow, 1983-84; Dean's Distinguished Teaching Award, 1986, American Academy of Arts and Sciences Fellow, 1999, Earl K. Plyler Prize for Molecular Spectroscopy, 2000
Research Area: Physical Chemistry-Chemical Physics
E-mail: fayer@stanford.edu
Website: Fayer Research Group
Organization: University
Relationship: Faculty
Position: Professor
Department: Chemistry Operations
Work Phone: (650) 723-4446
Fax:(650) 723-4817
Work Address: Keck Bldg., Rm. 113, 5080
Stanford, California, 94305-5080 |
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Promulgator Info |
| Full name: |
administrator |
| Country: |
CN |
| City: |
Dalian |
| Company Name: |
teloon Soft Strategy Co.,LTD |
| Homepage: |
http://www.hqsq.net |
| E-mail: |
reply |
| Phone: |
86-411-82811662 |
| Fax: |
86-411-82819667 |
| Company Address: |
26 Renmin Road ,Dalian China |
| Zip/Postal Code: |
116001 |
| Introduction: |
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