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Despite the fact that many years have elapsed since the first microcalorimetric measurements of an action potential were made, there is still among the research workers involved in the study of bioelectrogenesis a complete overlooking of the most fundamental principle governing any biological phenomenon at the molecular scale of dimension. This is surprising, the more so that the techniques of molecular biology are applied to characterize the proteins forming the ionic conducting sites in living membranes. For reasons that are still obscure to us the molecular aspects of bioelectrogenesis are completely out of the scope of the dynamic aspects of biochemistry. Even if it is sometimes recognized that an action potential is a free energy-consuming, entropy-producing process, the next question that should reasonably arise is never taken into consideration. There is indeed a complete evasion of the problem of biochemical energy coupling thus reducing the bioelectrogenesis to only physical interactions of membrane proteins with the electric field: the inbuilt postulate is that no molecular transformations, in the chemical sense, could be involved.
2 117 kr
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It is now more than 20 years since the book "Radical Ions" edited by Kaiser and Kevan appeared. It contained aspects regarding generation, identification, spin density determination and reactivity of charged molecules with an odd number of electrons. New classes of reactive ion radicals have been detected and characterised since then, most notably cation radicals of saturated organic compounds. Trapping of electrons has been found to occur not only in frozen glasses but also in organic crystals. The structure and reactions of anion radicals of saturated compounds have been clarified during the last 20 years. We have asked leading experts in the field to write separate chapters about cation radicals, anion radicals and trapped electrons as well as more complex systems of biological or technological interest. More attention is paid to recent studies of the ions of saturated compounds than to the older and previously reviewed work on aromatic ions. In the case of trapped electrons full coverage is out of the question, and focus is on recent efforts to characterise the solvation structure in ordered and disordered systems.
Del 7 - Topics in Molecular Organization and Engineering
Molecular Electronics
Materials and Methods
Inbunden, Engelska, 1991
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Del 8 - Topics in Molecular Organization and Engineering
Chemistry and Properties of Biomolecular Systems
Inbunden, Engelska, 1991
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In this volume we have included some contributions among the plenary lectures, oral presentations and posters that have been presented at the 1st Joint Greek-Italian Meeting on "The Chemistry of Biological systems and Molecular Chemical Engineering" organized at Loutraki, Club Poseidon, Greece 1990. We hope similar meetings will follow every two years alternating between the two countries in order to strengthen the scientific ties among the scientists working in this field. The inter- disciplary aspect of the meeting has been evident by the wide presence of scientists in bioinorganic, bio-organic, biological fields and molecular engineers who will get together and exchange ideas and experiences. We take this opportunity to thank the Greek Chemical Society, the Italian Chemical Society, the "Gruppo Interdivisionale di Chimica dei Sistemi e dei Processi Biologici", Consiglio Nazionale delle Ricerche, Nuclear Research Center "Demokritos" and the Greek Ministry for Research and Technology.ENRICO RIZZARELLI THEOPHILE THEOPHANIDES CONTRIBUTORS Numbers in parentheses indicate the pages on which the author's contributions begin Mojgan Aghazode Tabrizi, Department of Pharmaceutical Science, via Scandiana 21, University of Ferrara, 44100 Ferrara, ITALY (119) Maria Albano, Department of Chemistry, University of Calabria, Arcavacata di Rende, 87030 Cosenza ITALY (23) Rossano Amadelli, Photochemical Center of C. N. R. , Department of Chemistry, University of Ferrara, via L. Borsari 46, 44100 Ferrara, ITALY (103) Amalia Anagnostopoulou-Konsta, Department of Physics, National Technical University, 57 73 Athens, GREECE (45) Jane D.
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The early transition elements, especially vanadium, molybdenum and tungsten, form a vast number of polyoxoanions with remarkable structures, unprecedented combinations of properties and relevance to disciplines ranging from mathematics to medicine. Although the first examples of these substances were described in the mid-19th century, it is only within the last 20-30 years that the field has begun to receive the attention it deserves. This book contains 28 review chapters by leading investigators who participated in an international workshop held in Bielefeld in July 1992. It provides a survey of recent and current activity in this field - including new synthetic methods and new structural types; topological analysis of polyhedral structures; discrete polyoxoanions as models for metal oxide lattices, magnetic interactions and domains; donor-acceptor and host-guest chemistry; organic and organometallic derivatives; mixed valence and electron transfer; homogeneous and heterogeneous redox and acid catalysis; photochemistry and photocatalysis; polyoxoanion-protein chemistry; antitumour and anti-HIV activity.
Proceedings of the Second Joint Greek-Italian Meeting on Chemistry and Biological Systems and Molecular Chemical Engineering, Cetraro, Italy, October, 1992
Inbunden, Engelska, 1994
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Interest in the chemistry of biological systems, as well as in molecular chemical engineering, has grown considerably since the mid-1980s. Many fields in modern chemistry are contributing to a better understanding of elementary mechanisms of various biological processes and this has resulted in the development of new classes of organic and organometallic compounds with specific and high biological activity. Such a multidisciplinary approach creates opportunities for an exchange of ideas and the need to create a common language. This volume contains a set of papers, written by leading scientists which collectively provide an overview of current research activities relating to the chemistry of biological systems. These papers emphasize the interdisciplinary nature of this research. This text should be of interest to researchers in academia and industry whose work involves the chemistry and properties of biomolecular systems.
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Studies of free radicals on surfaces are of interest for several reasons: the spontaneous or stimulated formation of radicals from adsorbed molecules may represent one possible mechanism for heterogeneous catalysis. In some cases the radicals are ionic, indicating that primary oxidation and reduction reactions occur. Radicals can also be used as probes to investigated diffusion processes on catalytic surfaces. The first direct observations were made more than 30 years ago, but detailed studies of structure, reactions and mobility have only recently become feasible with the advent of powerful spectroscopic techniques, to a great extent developed and used by the contributors to this volume. This comprehensive review describes new trends in the field. Leading experts write about the nature of surface active sites, methods to identify them, and the radicals formed from adsorbed molecules interacting with the surface. The emphasis is on the fundamentals covering thermal, photostimulated and radiation induced reactions as well as diffusion processes. This provides the necessary background for technological applications.This book will be useful to those who are interested in surface chemistry, heterogeneous catalysis as well as those who want to study reactive intermediates in chemical reactions. It is also of interest to scientists in photo and radiation physics and chemistry.
Quantum Systems in Chemistry and Physics. Trends in Methods and Applications
Inbunden, Engelska, 1998
1 589 kr
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These papers are a selection of those presented at the first European Workshop on Quantum Systems in Chemistry and Physics, held at San Miniato, near Pisa, Italy, in April 1996, which brought together leading experts in theoretical chemistry and molecular physics with an interest in the quantum-mechanical many-body problem. The various contributions embrace topics such as density matrices and density functional theory, relativistic formulations, electron correlation, valence theory, nuclear motion, response theory, condensed matter, and chemical reactions.
Molecules in Physics, Chemistry, and Biology
Physical Aspects of Molecular Systems
Inbunden, Engelska, 1988
3 172 kr
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Volume 1: General Introduction to Molecular Sciences Volume 2: Physical Aspects of Molecular Systems Volume 3: Electronic Structure and Chemical Reactivity Volume 4: Molecular Phenomena in Biological Sciences
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Studies of free radicals on surfaces are of interest for several reasons: the spontaneous or stimulated formation of radicals from adsorbed molecules may represent one possible mechanism for heterogeneous catalysis. In some cases the radicals are ionic, indicating that primary oxidation and reduction reactions occur. Radicals can also be used as probes to investigate diffusion processes on catalytic surfaces. The first direct observations were made more than 30 years ago, but detailed studies of structure, reactions and mobility have only recently become feasible with the advent of powerful spectroscopic techniques, to a great extent developed and used by the contributors to this volume. This comprehensive review describes new trends in the field. Leading experts write about the nature of surface active sites, methods to identify them, and the radicals formed from adsorbed molecules interacting with the surface. The emphasis is on the fundamentals covering thermal, photostimulated and radiation induced reactions as well as diffusion processes. This provides the necessary background for technological applications. This book will be useful to those who are interested in surface chemistry, heterogeneous catalysis as well as those who want to study reactive intermediates in chemical reactions. It is also of interest to scientists in photo and radiation physics and chemistry.
550 kr
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During the last decade, interest in the chemistry of biological systems, as well as in molecular chemical engineering, has grown considerably. Many fields in modern chemistry are contributing to a better understanding of elementary mechanisms of various biological processes and this has resulted in the development of new classes of organic and organometallic compounds with specific and high biological activity. Such a multidisciplinary approach creates opportunities for an exchange of ideas and the need to create a common language. This volume contains a collection of papers, written by leading scientists which collectively provide a rich overview of current research activities relating to the chemistry of biological systems. These papers emphasize the interdisciplinary nature of this research. For researchers in academia and industry whose work involves the chemistry and properties of biomolecular systems.
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MICHAEL T. POPE AND ACHIM MULLER Department of Chemistry, Georgetown University, Washington, DC 20057-2222, U.S.A.; Department of Chemistry, University of Bielefeld, D-4BOO Bielefeld 1, F.R.G. Polyoxometalates, from their discovery and early development in the final decades of the 19th century to their current significance in disciplines as diverse as chemistry, mathematics, and medicine, continue to display surprisingly novel structures, unexpected reactivities and applications, and to attract increasing attention worldwide. Most of the contributors to the present volume participated in the workshop held at the Center for Interdisciplinary Research at the University of Bielefeld, July 15-17, 1992. The choice of topics illustrates some of the variety of directions and fields in which polyoxometalates can play an important role. Although many of the leading polyoxometalate research groups are represented here, we regret that time constraints, financial limitations, and in some cases difficulties of communication did not allow us to include significant and imp- tant work from other groups outside Europe and North America. In the following we briefly review the current status of the field of po- oxometalates.
Del 12 - Topics in Molecular Organization and Engineering
Structure and Dynamics of Non-Rigid Molecular Systems
Häftad, Engelska, 2012
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This volume contains a selection of scientific papers related to the structure and dynamics of non-rigid molecules. This frontline topic was born a few decades ago, when Longuet-Higgins proposed his famous theory of Molecular Symmetry Groups (Mol. Phys. 6, (1962) 457). Unfortunately, since this early paper, very few publications have been devoted to the study of non-rigid molecules. Let us mention some books which dedicate some chapters to them: Induced Representations in Crystals and Molecules, by S. L. Altmann, Academic Publishers, 1977; Molecular Symmetry and Spectroscopy, by P. R. Bunker, Academic Publishers, 1979; and finally Large Amplitude Motion in Molecules, Vols. I and II, by several authors, Springer Verlag, 1979. More recently an International Symposium on Non-Rigid Molecules was held in Paris, France, from 1-7 July 1982, the proceedings of which were published in the volume entitled Symmetries and Properties of Non-Rigid Molecules. A Comprehensive Survey, edited by J. Maruani et al., Elsevier, 1983. Finally, we should mention the very specialized work The Permutational Approach to Dynamic Stereochemistry, by J. Brocas et al., McGraw-Hill, 1983. The purpose of this book is to fill in this information on the structure and dynamics of non-rigid systems. To this aim, we have gathered a collection of recent papers written by the most qualified specialists in the world, covering a large field from van der Waals molecules to inorganic complexes and organic polyrotor molecules, as well as considering statistical and dynamic aspects.
Del 9 - Topics in Molecular Organization and Engineering
Trends in Applied Theoretical Chemistry
Häftad, Engelska, 2011
534 kr
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The present volume gathers a series of selected and updated contributions presented at the International Symposium on Applied Theoretical Chemistry held in Havana, Cuba, July 2-6, 1990. This Symposium was intended to illustrate current applications of Theoretical Chemistry in different fields of Physical Chemistry. Theoretical Chemistry has become a powerful tool of investigation in all areas of Chemistry, Biochemistry, and Physical Chemistry. The plenary lectures given in the Symposium were classified into four topics: Atom-Surface Interactions, Chemical Reaction Mechanisms, Molecular Structure and Properties, and Molecular Spectroscopy. We retain the same division in this volume. Over 60 scientists from Cuba, Finland, France, Germany, Great-Britain, Hungary, Italy, Spain, Sweden, USA, USSR, and Venezuela participated in the Conference. Twenty plenary lectures were given by distinguished members of the international scientific community. Furthermore, a large number of posters were presented by younger experts in various fields of Theoretical Chemistry. This International Symposium was organized by the Faculty of Chemistry of the University of Havana and the Cuban Chemical Society. It was an opportunity to bring together in Havana several outstanding scientists from various countries of the world. Havana is worldwide renown for its wonderful climate, the hospitality of its inhabitants, and the proximity of beautiful touring resorts.
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In this volume we have included some contributions among the plenary lectures, oral presentations and posters that have been presented at the 1st Joint Greek-Italian Meeting on "The Chemistry of Biological systems and Molecular Chemical Engineering" organized at Loutraki, Club Poseidon, Greece 1990. We hope similar meetings will follow every two years alternating between the two countries in order to strengthen the scientific ties among the scientists working in this field. The inter- disciplary aspect of the meeting has been evident by the wide presence of scientists in bioinorganic, bio-organic, biological fields and molecular engineers who will get together and exchange ideas and experiences. We take this opportunity to thank the Greek Chemical Society, the Italian Chemical Society, the "Gruppo Interdivisionale di Chimica dei Sistemi e dei Processi Biologici", Consiglio Nazionale delle Ricerche, Nuclear Research Center "Demokritos" and the Greek Ministry for Research and Technology.ENRICO RIZZARELLI THEOPHILE THEOPHANIDES CONTRIBUTORS Numbers in parentheses indicate the pages on which the author's contributions begin Mojgan Aghazode Tabrizi, Department of Pharmaceutical Science, via Scandiana 21, University of Ferrara, 44100 Ferrara, ITALY (119) Maria Albano, Department of Chemistry, University of Calabria, Arcavacata di Rende, 87030 Cosenza ITALY (23) Rossano Amadelli, Photochemical Center of C. N. R. , Department of Chemistry, University of Ferrara, via L. Borsari 46, 44100 Ferrara, ITALY (103) Amalia Anagnostopoulou-Konsta, Department of Physics, National Technical University, 57 73 Athens, GREECE (45) Jane D.
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It is now more than 20 years since the book "Radical Ions" edited by Kaiser and Kevan appeared. It contained aspects regarding generation, identification, spin density determination and reactivity of charged molecules with an odd number of electrons. New classes of reactive ion radicals have been detected and characterised since then, most notably cation radicals of saturated organic compounds. Trapping of electrons has been found to occur not only in frozen glasses but also in organic crystals. The structure and reactions of anion radicals of saturated compounds have been clarified during the last 20 years. We have asked leading experts in the field to write separate chapters about cation radicals, anion radicals and trapped electrons as well as more complex systems of biological or technological interest. More attention is paid to recent studies of the ions of saturated compounds than to the older and previously reviewed work on aromatic ions. In the case of trapped electrons full coverage is out of the question, and focus is on recent efforts to characterise the solvation structure in ordered and disordered systems.
1 589 kr
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Quantum Systems in Chemistry and Physics contains a refereed selection of the papers presented at the first European Workshop on this subject, held at San Miniato, near Pisa, Italy, in April 1996. The Workshop brought together leading experts in theoretical chemistry and molecular physics with an interest in the quantum mechanical many-body problem. This volume provides an insight into the latest research in this increasingly important field. Throughout the Workshop, the emphasis was on innovative theory and conceptual developments rather than on computational implementation. The various contributions presented reflect this emphasis and embrace topics such as density matrices and density functional theory, relativistic formulations, electron correlation, valence theory, nuclear motion, response theory, condensed matter, and chemical reactions. Audience: The volume will be of interest to those working in the molecular sciences and to theoretical chemists and molecular physicists in particular.
Del 4 - Topics in Molecular Organization and Engineering
Molecules in Physics, Chemistry, and Biology
Molecular Phenomena in Biological Sciences
Häftad, Engelska, 2013
534 kr
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Volume 1: General Introduction to Molecular Sciences Volume 2: Physical Aspects of Molecular Systems Volume 3: Electronic Structure and Chemical Reactivity Volume 4: Molecular Phenomena in Biological Sciences
1 062 kr
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Despite the fact that many years have elapsed since the first microcalorimetric measurements of an action potential were made, there is still among the research workers involved in the study of bioelectrogenesis a complete overlooking of the most fundamental principle governing any biological phenomenon at the molecular scale of dimension. This is surprising, the more so that the techniques of molecular biology are applied to characterize the proteins forming the ionic conducting sites in living membranes. For reasons that are still obscure to us the molecular aspects of bioelectrogenesis are completely out of the scope of the dynamic aspects of biochemistry. Even if it is sometimes recognized that an action potential is a free energy-consuming, entropy-producing process, the next question that should reasonably arise is never taken into consideration. There is indeed a complete evasion of the problem of biochemical energy coupling thus reducing the bioelectrogenesis to only physical interactions of membrane proteins with the electric field: the inbuilt postulate is that no molecular transformations, in the chemical sense, could be involved.
Molecules in Physics, Chemistry, and Biology
General Introduction to Molecular Sciences
Häftad, Engelska, 2011
534 kr
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Volume 1: General Introduction to Molecular Sciences Volume 2: Physical Aspects of Molecular Systems Volume 3: Electronic Structure and Chemical Reactivity Volume 4: Molecular Phenomena in Biological Sciences
Molecules in Physics, Chemistry, and Biology
Physical Aspects of Molecular Systems
Häftad, Engelska, 2011
3 172 kr
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Volume 1: General Introduction to Molecular Sciences Volume 2: Physical Aspects of Molecular Systems Volume 3: Electronic Structure and Chemical Reactivity Volume 4: Molecular Phenomena in Biological Sciences
Del 3 - Topics in Molecular Organization and Engineering
Molecules in Physics, Chemistry, and Biology
Electronic Structure and Chemical Reactivity
Häftad, Engelska, 2011
534 kr
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Volume 1: General Introduction to Molecular Sciences Volume 2: Physical Aspects of Molecular Systems Volume 3: Electronic Structure and Chemical Reactivity Volume 4: Molecular Phenomena in Biological Sciences
Del 14 - Topics in Molecular Organization and Engineering
Strategies and Applications in Quantum Chemistry
From Molecular Astrophysics to Molecular Engineering
Häftad, Engelska, 2013
534 kr
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At the time when increasing numbers of chemists are being attracted by the fascination of supposedly easy computing and associated colourful imaging, this book appears as a counterpoint. The first part focuses on fundamental concepts of quantum chemistry, covering MCSCF theory, perturbation treatments, basis set developments, density matrices, wave function instabilities to correlation effects, and momentum space theory. The second part is devoted to more practical studies, ranging from the characterisation of exotic interstellar molecules, the accurate determination of spectroscopic constants, excited states structures and EPR parameters through photochemical and charge-transfer processes, cluster chemistry and fullerenes, muonium chemistry, to the possible prediction of the response of materials to electric fields in view of nonlinear optical applications. Audience: Graduate students and researchers whose work involves quantum chemistry, molecular physics, and materials modelling.
Del 15 - Topics in Molecular Organization and Engineering
Modelling of Minerals and Silicated Materials
Häftad, Engelska, 2013
534 kr
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The modeling of minerals and silicated materials is a. difficult challenge faced by Solid StatePhysics, Quantum Chemistry and Molecular Dynamics communities. The difficulty of such a modeling is due to the wide diversity of elements, including heavy atoms,and types of bonding involved in such systems. Moreover, one has to consider infinite systems: either perfect cr- tals or glasses and melts. In the solid state a given chemical composition gives rise to numerous polymorphs, geometricallycloselyrelated. These polymorphs have very similar energies and related thermodynamical pr- erties which explain the complexity of their phase diagrams. The modeling of silicates and minerals covers a wide field of applications ranging from basic research to technology, from Solid State Physics to Earth and Planetary science. The use of modeling techniques yields information of different nature. In the case of chemical studies, we can mention inv- tigations on catalytic processes occurring on surfaces and in zeolite cages. These calculations find possible applications in chemical engineering, in particular in the oil industry.