Transient Changes in Molecular Geometries and How to Model Them

Simulating Chemical Reactions of Metal Complexes in Solution to Explore Dynamics, Solvation, Coherence, and the Link to Experiment

Nonfiction, Science & Nature, Science, Physics, Spectrum Analysis, Chemistry, Physical & Theoretical
Cover of the book Transient Changes in Molecular Geometries and How to Model Them by Asmus Ougaard Dohn, Springer International Publishing
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Author: Asmus Ougaard Dohn ISBN: 9783319187471
Publisher: Springer International Publishing Publication: June 6, 2015
Imprint: Springer Language: English
Author: Asmus Ougaard Dohn
ISBN: 9783319187471
Publisher: Springer International Publishing
Publication: June 6, 2015
Imprint: Springer
Language: English

This thesis examines various aspects of excess excitation energy dissipation via dynamic changes in molecular structure, vibrational modes and solvation. The computational work is carefully described and the results are compared to experimental data obtained using femtosecond spectroscopy and x-ray scattering. The level of agreement between theory and experiment is impressive and provides both a convincing validation of the method and significant new insights into the chemical dynamics and molecular determinants of the experimental data. Hence, the method presented in the thesis has the potential to become a very important contribution to the rapidly growing field of femtosecond x-ray science, a trend reflected in the several free-electron x-ray lasers (XFELs) currently being built around the world.

Light-induced chemical processes are accompanied by molecular motion of electrons and nuclei on the femtosecond time scale. Uncovering these dynamics is central to our understanding of the chemical reaction on a fundamental level.

Asmus O. Dohn has implemented a highly efficient QM/MM Direct Dynamics method for predicting the solvation dynamics of transition metal complexes in solution.

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This thesis examines various aspects of excess excitation energy dissipation via dynamic changes in molecular structure, vibrational modes and solvation. The computational work is carefully described and the results are compared to experimental data obtained using femtosecond spectroscopy and x-ray scattering. The level of agreement between theory and experiment is impressive and provides both a convincing validation of the method and significant new insights into the chemical dynamics and molecular determinants of the experimental data. Hence, the method presented in the thesis has the potential to become a very important contribution to the rapidly growing field of femtosecond x-ray science, a trend reflected in the several free-electron x-ray lasers (XFELs) currently being built around the world.

Light-induced chemical processes are accompanied by molecular motion of electrons and nuclei on the femtosecond time scale. Uncovering these dynamics is central to our understanding of the chemical reaction on a fundamental level.

Asmus O. Dohn has implemented a highly efficient QM/MM Direct Dynamics method for predicting the solvation dynamics of transition metal complexes in solution.

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