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Author: H. Mauser Publisher: Elsevier ISBN: 0080538851 Category : Science Languages : en Pages : 577
Book Description
Many books cover the determination of rate constants under different experimental conditions and different chemical composition of the reaction mixture in their formal treatment of thermal kinetics. However, most textbooks are limited to simple mechanisms. In contrast, analogous treatment of photochemical reactions is limited to the publication of special reactions and investigations. Therefore, this book is aimed at providing an overall description of formal photokinetics covering a wider scope than the usual books on kinetics.This volume attempts to provide a concise treatment of both thermo- and photochemical reactions by means of generalised differential equations, their set-up in matrix notation, and their solution by a formalism using numerical integration. At a first glance this approach might be surprising. However, apart from the argument that the didactics of thermal reactions are easier to handle than those of kinetics, the book provides additional reasons in support of this approach. Therefore, the formalism derived allows the evaluation of photochemical reactions, which are superimposed thermal reactions taking into account that the amount of light absorbed varies during the reaction. Because of this, any approximation, either by using total absorbance or negligible absorbance, will cause considerable errors even for simple reactions. The approach chosen to transform the axis of the radiation time into a new variable that includes the photokinetic factor proves that formal kinetics can be applied to thermal and photochemical reactions as well, and even allows the handling of solutions that cannot be homogenised or solid samples in which the concentration varies locally. By using this approach to introduce partial photochemical quantum yields even complex mechanisms can be determined quantitatively.A large number of examples for different mechanisms and an introduction to many spectroscopic and chromatographic methods suitable for photokinetic analyses are provided to enable the reader to carry out a step-by-step evaluation of his own measurements. To reduce the number of formula in some chapters an appendix has been included which contains a detailed description of the calculus of some essential examples. For the convenience of the reader the following has been included:• A large number of examples describing the use of formula• A detailed description of the procedure for applying photokinetics to complex consecutive photoreactions• An Internet address where the reader can find a tutorial for this procedure:http://www.barolo.ipc.uni-tuebingen.de/tele/photokin/• A simple macro to help in programming his own evaluation procedure.
Author: H. Mauser Publisher: Elsevier ISBN: 0080538851 Category : Science Languages : en Pages : 577
Book Description
Many books cover the determination of rate constants under different experimental conditions and different chemical composition of the reaction mixture in their formal treatment of thermal kinetics. However, most textbooks are limited to simple mechanisms. In contrast, analogous treatment of photochemical reactions is limited to the publication of special reactions and investigations. Therefore, this book is aimed at providing an overall description of formal photokinetics covering a wider scope than the usual books on kinetics.This volume attempts to provide a concise treatment of both thermo- and photochemical reactions by means of generalised differential equations, their set-up in matrix notation, and their solution by a formalism using numerical integration. At a first glance this approach might be surprising. However, apart from the argument that the didactics of thermal reactions are easier to handle than those of kinetics, the book provides additional reasons in support of this approach. Therefore, the formalism derived allows the evaluation of photochemical reactions, which are superimposed thermal reactions taking into account that the amount of light absorbed varies during the reaction. Because of this, any approximation, either by using total absorbance or negligible absorbance, will cause considerable errors even for simple reactions. The approach chosen to transform the axis of the radiation time into a new variable that includes the photokinetic factor proves that formal kinetics can be applied to thermal and photochemical reactions as well, and even allows the handling of solutions that cannot be homogenised or solid samples in which the concentration varies locally. By using this approach to introduce partial photochemical quantum yields even complex mechanisms can be determined quantitatively.A large number of examples for different mechanisms and an introduction to many spectroscopic and chromatographic methods suitable for photokinetic analyses are provided to enable the reader to carry out a step-by-step evaluation of his own measurements. To reduce the number of formula in some chapters an appendix has been included which contains a detailed description of the calculus of some essential examples. For the convenience of the reader the following has been included:• A large number of examples describing the use of formula• A detailed description of the procedure for applying photokinetics to complex consecutive photoreactions• An Internet address where the reader can find a tutorial for this procedure:http://www.barolo.ipc.uni-tuebingen.de/tele/photokin/• A simple macro to help in programming his own evaluation procedure.
Author: Joseph T. Piechocki Publisher: CRC Press ISBN: 1420014137 Category : Medical Languages : en Pages : 472
Book Description
Based on a training course developed by Dr. Joseph T. Piechocki and other experts in this field whose contributions appear in this book for two International Meetings on the Photostability of Drugs and Drug Products, this text clarifies the guidelines set by the International Conference on Harmonization (ICH) and provides a comprehensive background
Author: George Knopf Publisher: CRC Press ISBN: 1420019503 Category : Science Languages : en Pages : 676
Book Description
Synergy is the key to creating more intelligent biosensors. Engineers develop smaller, more integrated technologies; biologists and chemists develop increasingly selective and sensitive sensor elements; material scientists develop ways to bring it all together. However, most books focus only on the chemistry aspects of biosensor technologies. With
Author: George K. Knopf Publisher: CRC Press ISBN: 0429771452 Category : Technology & Engineering Languages : en Pages : 772
Book Description
Based on the success of the first edition, this second edition continues to build upon fundamental principles of biosensor design and incorporates recent advances in intelligent materials and novel fabrication techniques for a broad range of real world applications. The book provides a multi-disciplinary focus to capture the ever-expanding field of biosensors. Smart Biosensor Technology, Second Edition includes contributions from leading specialists in a wide variety of fields with a common focus on smart biosensor design. With 21 chapters organized in five parts, this compendium covers the fundamentals of smart biosensor technology, important issues related to material design and selection, principles of biosensor design and fabrication, advances in bioelectronics, and a look at specific applications related to pathogen detection, toxicity monitoring, microfluidics and healthcare. Features Provides a solid background in the underlying principles of biosensor design and breakthrough technologies for creating more intelligent biosensors Focusses on material design and selection including cutting-edge developments in carbon nanotubes, polymer nanowires, and porous silicon Examines machine learning and introduces concepts such as DNA-based molecular computing for smart biosensor function Explores the principles of bioelectronics and nerve cell microelectrode arrays for creating novel transducers and physiological biosensors Devotes several chapters to biosensors developed to detect and monitor a variety of toxins and pathogens Offers expert opinions on the future directions, challenges and opportunities in the field
Author: E. Kochanski Publisher: Springer Science & Business Media ISBN: 9401126984 Category : Science Languages : en Pages : 448
Book Description
The scope of this paper is to recall fundamental notions of the molecular spectroscopy and dynamics, necessary for discussion of photophysical and photochemical processes in condensed phases. We will thus treat in a more detailed way the specific features which are important for molecular systems strongly interacting with their environment. Other aspects such as the time evolution of isolated molecules, single-level excitation and state-to-state chemistry, important for the gas-phase photophysics are omitted. We start (Sec.2) with a brief description of radiative processes (light absorption and emission) in molecules. In the quantum-mechanical treatment of this problem, the appropriate basis is that of so-called zero-order states, corresponding to the traditional scheme of electronic states (singlets, doublets, triplets etc.) and vibrational levels belonging to each state. The important point will be deduction of selection rules for most radiative transitions. At this stage all molecular states are considered as stationary states. In order to treat the breakdown of simple selection rules and non-radiative transitions between individual molecular states, it is necessary to take into account the mechanisms coupling the zero-order states (Sec.3). We will first focus on intramolecular coupling effects and then discuss the solvent effects on intramolecular relaxation processes. The problem of the non-radiative transfer of the electronic energy between different molecules - closely related to that of the energy dissipation within a single molecule will be treated in Sec.4.
Author: H. Mauser
Author: H. Mauser
Author: Chemical Society (Great Britain)
Author: Joseph T. Piechocki
Author: George Knopf
Author: Stephen Curtis Stearns
Author: George K. Knopf
Author: Gunnar Wettermark
Author: Chemical Society (Great Britain)
Author: Академия наук СССР
Author: E. Kochanski