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Author: J. Fünfschilling
Publisher: Springer Science & Business Media
ISBN: 9400908636
Category : Science
Languages : en
Pages : 282
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Book Description
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.
Author: J. Fünfschilling
Publisher: Springer Science & Business Media
ISBN: 9400908636
Category : Science
Languages : en
Pages : 282
Get Book Here
Book Description
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.
Author: Sheng Hsien Lin
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 456
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Book Description
Author: Edward C. Lim
Publisher:
ISBN:
Category : Energy levels (Quantum mechanics)
Languages : en
Pages : 368
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Book Description
Author: S.D. Schwartz
Publisher: Springer Science & Business Media
ISBN: 0306469499
Category : Science
Languages : en
Pages : 314
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Book Description
This book is meant to provide a window on the rapidly growing body of theoretical studies of condensed phase chemistry. A brief perusal of physical chemistry journals in the early to mid 1980’s will find a large number of theor- ical papers devoted to 3-body gas phase chemical reaction dynamics. The recent history of theoretical chemistry has seen an explosion of progress in the devel- ment of methods to study similar properties of systems with Avogadro’s number of particles. While the physical properties of condensed phase systems have long been principle targets of statistical mechanics, microscopic dynamic theories that start from detailed interaction potentials and build to first principles predictions of properties are now maturing at an extraordinary rate. The techniques in use range from classical studies of new Generalized Langevin Equations, semicl- sical studies for non-adiabatic chemical reactions in condensed phase, mixed quantum classical studies of biological systems, to fully quantum studies of m- els of condensed phase environments. These techniques have become sufficiently sophisticated, that theoretical prediction of behavior in actual condensed phase environments is now possible. and in some cases, theory is driving development in experiment. The authors and chapters in this book have been chosen to represent a wide variety in the current approaches to the theoretical chemistry of condensed phase systems. I have attempted a number of groupings of the chapters, but the - versity of the work always seems to frustrate entirely consistent grouping.
Author: James N. Pitts
Publisher: John Wiley & Sons
ISBN: 0470133643
Category : Science
Languages : en
Pages : 426
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Book Description
Setting the pace for progress and innovation . . . "[Provides] a wealth of information on frontier photochemistry . . . could easily serve as a definitive source of background information for future researchers." —Journal of the American Chemical Society "The overall quality of the series and the timeliness of selections and authors warrants continuation of the series by any library wishing to maintain a first-rate reference series to the literature." —Physics Today ADVANCES IN PHOTOCHEMISTRY More than a simple survey of the current literature, Advances in Photochemistry offers critical evaluations written by internationally recognized experts. These pioneering scientists offer unique and varied points of view of the existing data. Their articles are challenging as well as provocative and are intended to stimulate discussion, promote further research, and encourage new developments in the field.
Author: V. Ramamurthy
Publisher: CRC Press
ISBN: 1000654303
Category : Science
Languages : en
Pages : 245
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Book Description
Featuring contributions from leading experts, Organic Photochemistry and Photophysics is a unique resource that addresses the organic photochemistry and photophysical behavior in aromatic molecules, thiocarbonyls, selected porphyrins, and metalloporphyrins. The book presents theories pertaining to radiative and radiationless transitions. It
Author: V.P. Gupta
Publisher: Elsevier
ISBN: 0128188715
Category : Science
Languages : en
Pages : 706
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Book Description
Molecular and Laser Spectroscopy, Advances and Applications: Volume 2 gives students and researchers an up-to-date understanding of the fast-developing area of molecular and laser spectroscopy. This book covers basic principles and advances in several conventional as well as new and upcoming areas of molecular and laser spectroscopy, such as a wide range of applications in medical science, material science, standoff detection, defence and security, chemicals and pharmaceuticals, and environmental science. It covers the latest advancements, both in terms of techniques and applications, and highlights future projections. Editors V.P. Gupta and Yukihiro Ozaki have brought together eminent scientists in different areas of spectroscopy to develop specialized topics in conventional molecular spectroscopy (Cavity ringdown, Matrix Isolation, Intense THz, Far- and Deep- UV, Optogalvanic ), linear and nonlinear laser spectroscopy (Rayleigh & Raman Scattering), Ultrafast Time-resolved spectroscopy, and medical applications of molecular spectroscopy. and advanced material found in research articles. This new volume expands upon the topics covered in the first volume for scientists to learn the latest techniques and put them to practical use in their work. - Covers several areas of spectroscopy research and expands upon topics covered in the first volume - Includes exhaustive lists of research articles, reviews, and books at the end of each chapter to further learning objectives - Uses illustrative examples of the varied applications to provide a practical guide to those interested in using molecular and laser spectroscopy tools in their research
Author: Martin Hof
Publisher: Springer Science & Business Media
ISBN: 3540270043
Category : Science
Languages : en
Pages : 315
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Book Description
Volume 3 of this new series focuses on brandnew research and applications in biology, biophysics and other fields of life sciences. Many frontline researcher have contributed to this highly attractive and interdisciplinary volume which spans the entire field of present fluorescence spectroscopy including nanotechnology, membrane and DNA studies and fluorescence imaging in cancer research.
Author: Giacomo Messina
Publisher: IOS Press
ISBN: 9781586032623
Category : Medical
Languages : en
Pages : 302
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Book Description
Annotation Optical spectroscopy represents one of the most powerful and useful investigation tools. Due to the broad range of applications in scientific and technological Research, its potential is very great. Among the large variety of its branches, a leading role is played by Raman spectroscopy that, allowing the non-destructive material characterisation, is the most-widely utilised diagnostic-tool in Research laboratories. An encounter opportunity for Researchers working in the Spectroscopy field is offered by the Conference organised by the National Group of Raman Spectroscopy and non-linear effects (GNSR). The GNSR Meeting represents an appointment, usually recurring every two years. Its main purpose is to act as a common forum for Spectroscopists, where the most recent and relevant Italian results and applications are presented. The GNSR Conference, hence, constitutes an opportunity for a stimulating exchange of ideas and experiences among the members of the lively Scientific Community involved, including a variety of Scientists, such as Physicists, Chemists, Engineers, Architects, Historians of Art, active in the field of Raman spectroscopy and non-linear effects. Offering the possibility of both divulging assessed results and exploring the feasibility of new projects, the GNSR Meeting promotes the advancement of Raman spectroscopy and related techniques not only in Research, but also in Industry and Education.
Author: Dr. B. K. Sharma
Publisher: Krishna Prakashan Media
ISBN: 9788182830189
Category :
Languages : en
Pages : 984
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Book Description
