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Molecular Excitation Dynamics and Relaxation

2013-10-04 Science
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Release : 2013-10-04
Genre : Science
Kind : eBook
Book Rating : 678/5 ( reviews)

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Book Synopsis Molecular Excitation Dynamics and Relaxation by : Leonas Valkunas

Download or read book Molecular Excitation Dynamics and Relaxation written by Leonas Valkunas. This book was released on 2013-10-04. Available in PDF, EPUB and Kindle. Book excerpt: This work brings together quantum theory and spectroscopy to convey excitation processes to advanced students and specialists wishing to conduct research and understand the entire fi eld rather than just single aspects. Written by experienced authors and recognized authorities in the field, this text covers numerous applications and offers examples taken from different disciplines. As a result, spectroscopists, molecular physicists, physical chemists, and biophysicists will all fi nd this a must-have for their research. Also suitable as supplementary reading in graduate level courses.

Relaxation Processes in Molecular Excited States

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 636/5 ( reviews)

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Book Synopsis Relaxation Processes in Molecular Excited States by : J. Fünfschilling

Download or read book Relaxation Processes in Molecular Excited States written by J. Fünfschilling. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: Relaxation phenomena of excited molecular states are abundant in all nature. They mediate such key processes as photochemical reactions or even the pathways of ordinary chemical reactions. However, for a long time the main research in electronic relaxation processes was concerned with anorganic solids, in part because of their great technological importance (photography, semiconductors ... ) in part also because these compounds were the "workhorses" of the solid state physicists. In the last 30 years, there was a steadily increasing interest in organic molecular systems, first in molecular crystals and later in all forms of molecular solids (glasses, polymers, membranes, ... ). The present volume combines papers on quite different types of relaxation phenomena: the type of solid studied, the electronic states involved, the physical processes responsible for the relaxations are all different. Nevertheless, after reading this book, a more clear and complete picture of the phenomenon "relaxa tion" emerges that proves that this volume is more than just a collection of individual articles. The volume starts with the paper "Spin-lattice and spin-spin relaxation in photo-excited triplet states in molecular crystals" by Jan Schmidt. Even in these seemingly simple systems of isolated guest molecules in a single crystal host, the relaxation phenomena are quite involved and a very thorough investigation is necessary to find the key relaxation processes. The end of the article provides a bridge to the following paper: it treats interactions of two molecules (dimers), where resonant interactions become important and lead to new, characteristic relaxation processes.

Charge and Energy Transfer Dynamics in Molecular Systems

2011-04-27 Science
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Release : 2011-04-27
Genre : Science
Kind : eBook
Book Rating : 812/5 ( reviews)

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Book Synopsis Charge and Energy Transfer Dynamics in Molecular Systems by : Volkhard May

Download or read book Charge and Energy Transfer Dynamics in Molecular Systems written by Volkhard May. This book was released on 2011-04-27. Available in PDF, EPUB and Kindle. Book excerpt: This 3rd edition has been expanded and updated to account for recent developments, while new illustrative examples as well as an enlarged reference list have also been added. It naturally retains the successful concept of its predecessors in presenting a unified perspective on molecular charge and energy transfer processes, thus bridging the regimes of coherent and dissipative dynamics, and establishing a connection between classic rate theories and modern treatments of ultrafast phenomena. Among the new topics are: - Time-dependent density functional theory - Heterogeneous electron transfer, e.g. between molecules and metal or semiconductor surfaces - Current flows through a single molecule. While serving as an introduction for graduate students and researchers, this is equally must-have reading for theoreticians and experimentalists, as well as an aid to interpreting experimental data and accessing the original literature.

Nonadiabatic Quantum Molecular Dynamics with Hopping

2014
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Release : 2014
Genre :
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Nonadiabatic Quantum Molecular Dynamics with Hopping by : Michael Fischer

Download or read book Nonadiabatic Quantum Molecular Dynamics with Hopping written by Michael Fischer. This book was released on 2014. Available in PDF, EPUB and Kindle. Book excerpt:

Radiationless Transitions

2012-12-02 Science
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Release : 2012-12-02
Genre : Science
Kind : eBook
Book Rating : 276/5 ( reviews)

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Book Synopsis Radiationless Transitions by : Sheng Lin

Download or read book Radiationless Transitions written by Sheng Lin. This book was released on 2012-12-02. Available in PDF, EPUB and Kindle. Book excerpt: Radiationless Transitions is a critical discussion of research studies on the theory and experiments in radiationless transitions. This book is composed of nine chapters, and begins with discussions on the theory and experiment of photophysical processes of single vibronic levels and/or single rovibronic levels. The subsequent chapters deal with the spectroscopic investigations of intramolecular vibrational relaxation; the dynamics of molecular excitation by light; and the photophysical processes of small molecules in condensed phase. The discussions then shift to the high pressure effects on molecular luminescence and the internal conversion involving localized excitations, presenting one qualitative and one quantitative example, as well as the intersystem crossing with localized excitations. A chapter explores the energy transfer processes that occur after a molecule in solution is excited by light, with an emphasis on solid solutions in which the large amplitude molecular motion is largely quenched. This chapter also looks into the liquid solutions in which the molecules can translate and rotate under the influence of fluctuating forces from the liquid. The concluding chapter focuses on ultrafast processes. Researchers in the fields of physics, chemistry, and biology will benefit from this book.

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