'A comprehensive review of the current state of the theoretical development in this important area of potential application of conducting polymers, and is very timely...The editor-author is to be congratulated for his marathon efforts and the production of a significant contribution to the literature.' -TRIP This three-part series provides undergraduate and graduate students in electrochemistry and materials science with a broad understanding of electroactive polymers. In Part I, renowned scientists examine the fundamental principles underlying electrochemical behavior of electroactive polymer materials. Contributors focus on the fundamentals of charge percolation and conductivity behavior associated with the membrane properties of electroactive polymer films. Part I also includes coverage of the phenomenon of heterogeneous redox catalysis at electroactive polymer modified electrodes.

A lively demonstration of the great vitality and the multidisciplinary character of cluster research and of the usefulness of synthesizing its various aspects was given at this symposium. This volume covers all aspects of the physical and chemical properties of free and supported clusters or small particles: static, dynamical, electronic, magnetic and optical properties, adsorption and chemical phenomena. It thus gives a complete overview of the status of the field and its development.

With the development of science and technology, more and more complex materials such as porous materials, ion liquid, liquid crystals, thin ?lms and colloids etc. are being developed in laboratories. However, it is dif?cult to prepare these advanced materials and use them on a large scale without some experience. Therefore, mo- cular thermodynamics, a method that laid emphasis on correlating and interpreting the thermodynamic properties of a variety of ?uids in the past, has been recently employed to study the equilibrium properties of complex materials and establish thermodynamic models to analyse the evolution process of their components, - crostructures and functions during the preparation process. In this volume, some important progress in this ?eld, from fundamental aspects to practical applications, is reviewed. In the ?rst chapter of this volume, Prof. Jianzhong Wu presents the application of Density Functional theory (DFT) for the study of the structure and thermodynamic properties of both bulk and inhomogeneous ?uids. This chapter presents a tut- ial overview of the basic concepts of DFT for classical systems, the mathematical relations linking the microstructure and correlation functions to measurable th- modynamic quantities, and the connections of DFT with conventional liquid-state theories. While for pedagogythe discussion is limited to one-componentsimple - ids, similar ideas and concepts are directly applicable to mixtures and polymeric systems of practical concern. This chapter also covers a few theoretical approaches to formulate the thermodynamic functional

Since the first application of dendrimers in catalysis in the mid 1990s, this field has advanced rapidly. As a consequence, catalytically active dendrimers have emerged as a class of molecular catalysts that has substantially enriched the field of homogeneous (and in part heterogeneous) catalysis. A general survey of transition metal dendrimer catalysts and the way they have developed is followed by in-depth discussions of dendritic transition metal catalysis based on non-covalent catalyst-support interaction and an overview of the rapidly growing field of stereoselective dendrimer catalysis. The development of dendrimer-encapsulated bimetallic nanoparticles has provided the interface with heterogeneous colloid catalysis. As cheaper and readily accessible alternatives to regular dendrimers, hyperbranched polymers are increasingly being used as catalyst platforms. These topics are complemented by a review of metallodendritic exoreptors for the redox recognition of oxo-anions and halides.

Nature has long used nucleic acid aptamers and enzymes for regulatory activities, such as the recently discovered "riboswitches" involved in gene expression. The existence of a large array of natural and artificial functional nucleic acids has generated tremendous enthusiasm and new opportunities for molecular scientists from diverse disciplines to devise new concepts and real applications that take advantage of those nucleic acids for sensing and other analytical applications. This book provides a timely and comprehensive overview of recent advances in the field, from leading experts in biology, chemistry, and engineering. A variety of topics are covered, from fundamentals of functional nucleic acids, to their applications as sensors, to nanotechnologies; as well as integration of functional nucleic acids into practical analytical systems.

Using the spin-Hamiltonian formalism the magnetic parameters are introduced through the components of the Lambda-tensor involving only the matrix elements of the angular momentum operator. The energy levels for a variety of spins are generated and the modeling of the magnetization, the magnetic susceptibility and the heat capacity is done. Theoretical formulae necessary in performing the energy level calculations for a multi-term system are prepared with the help of the irreducible tensor operator approach. The goal of the programming lies in the fact that the entire relevant matrix elements (electron repulsion, crystal field, spin-orbit interaction, orbital-Zeeman, and spin-Zeeman operators) are evaluated in the basis set of free-atom terms. The modeling of the zero-field splitting is done at three levels of sophistication. The spin-Hamiltonian formalism offers simple formulae for the magnetic parameters by evaluating the matrix elements of the angular momentum operator in the basis set of the crystal-field terms. The magnetic functions for dn complexes are modeled for a wide range of the crystal-field strengths.

Palladium is a remarkable metal. In particular, organopalladium chemistry has made remarkable progress over the last 30 years. That progress is still continuing, without any end in sight. This book presents a number of accounts and reviews on the novel Pd-catalyzed reactions discovered mainly in the last five years. The book covers Pd-catalyzed reactions that are new entirely different from the more standard ones. Topics such as new reactions involving ss-carbon elimination and formation of palladacycles as key reactions, cross-coupling of unactivated alkyl electrophiles with organometallic compounds, arylation via C-H bond cleavage, Pd/norbornene-catalyzed aromatic functionalizations, three-component cyclizations of allenes, use of N-heterocyclic carbenes as ligands, asymmetric reactions catalyzed by Pd(II) compounds such as Lewis acids, cycloadditions of arynes and alkynes, and nucleophilic attack by Pd species are surveyed in detail by researchers who have made important contributions to these fields. The book addresses graduate students majoring in organic synthesis and researchers in academic and industrial institutes."

''Biopolymers'' are polymeric materials of biological origin, including globular, membrane, and fibrous proteins, polypeptides, nucleic acids, po- saccharides, lipids, etc. and their assembly, although preference to respe- ive subjects may be different among readers who are more interested in their biological significance or industrial and/or medical applications. Nevert- less, characterizing or revealing their secondary structure and dynamics may be an equally very important and useful issue for both kinds of readers. Special interest in revealing the 3D structure of globular proteins, nucleic acids, and peptides was aroused in relation to the currently active Structural Biology. X-ray crystallography and multidimensional solution NMR sp- troscopy have proved to be the standard and indispensable means for this purpose. There remain, however, several limitations to this end, if one intends to expand its scope further. This is because these approaches are not always straightforward to characterize fibrous or membrane proteins owing to extreme difficulty in crystallization in the former, and insufficient spectral resolution due to sparing solubility or increased effective molecular mass in the presence of surrounding lipid bilayers in the latter.

This series presents critical reviews of the present position and future trends in modern chemical research concerned with chemical structure and bonding. It contains short and concise reports, each written by the world's renowned experts. The series is still valid and useful after five or ten years. More information is available at springerlink.com along with the electronic version of the whole content.

Bioorganometallic Chemistry has become a mature area of science and is comprehensively covered by leading experts in this book. Naturally occuring bioorganometallic complexes, such as vitamin B12 and recently discovered iron and nickel hydrogenases, including a possible role of the latter in the geochemical theory of the origin of life, are considered. The possible formation of carbene complexes of cytochrome P450 enzymes in various metabolisms of xenobiotics is also discussed. The bioorganometallic chemistry is considered to provide not only organometallic receptors such as polynuclear organometallic macrocycles for biologically interesting molecules but also ferrocene-peptide bioconjugates giving a peptidomimetic basis for protein folding. The medicinal properties of organometallic compounds are reviewed, with notable applications in the treatment and diagnosis of cancer and in the treatment of viral, fungal, bacterial and parasitic infections. Therefore the reader will get a balanced view of this rapidly developing and promising area.

The book covers the recently discovered oxidative process driven by zero-valent iron (ZVI) in the presence of oxygen and a further developed system which is named ZEA (Zero-valent iron, EDTA, Air). Future potential applications for en- ronmentalremediationusingthisprocessarealsodiscussed. Theoxidativeprocess wasdiscoveredduringthecourseofmolinate(athiocarbamateherbicide)degra- tion experiments. Both ferrous iron and superoxide (or, at pH < 4. 8, hydroperoxy) radicals appear to be generated on corrosion of the ZVI with resultant production of strongly oxidizing entities capable of degrading the trace contaminant. Fenton oxidationandoxidativeby-productswereobservedduringnanosizedZVI(nZV- mediateddegradationofmolinateunderaerobicconditions. Toassessthepotential applicationofnZVIforoxidativetransformationoforganiccontaminants,thec- version of benzoic acid (BA) to p-hydroxybenzoic acid (p-HBA) was used as a probe reaction. When nZVI was added to BA-containing water, an initial pulse of p-HBA was detected during the ?rst 30 minutes, followed by the slow generation of additional p-HBA over periods of at least 24 hours. The ZEA system showed that chlorinated phenols, organophosphorus and EDTA have been degraded. The mechanism by which the ZEA reaction proceeds is hypothesized to be through reactive oxygen intermediates. The ZVI-mediated oxidation and ZEA system may be useful for in situ applications of nZVI particles and may also provide a means of oxidizing organic contaminants in granular ZVI-containing permeable reactive barriers. The purpose of this book is to provide information on the recently discovered chemical process, which could revolutionize the treatment of pesticides and c- taminated water. It also aims to offer signi?cant insights to the knowledge for potential applications of ZVI-based technology. Oxidative degradation of herbicides (e. g.

Im Rahmen dieser Arbeit wurde ein Niedertemperatur Sol-Gel Verfahren zur Beschichtung von Silizium und Edelstahl mit Aluminiumhydroxidfluoriden und reinen Aluminiumfluoriden entwickelt. Diese Schichten wurden auf ihre Verwendbarkeit in der Katalyse, aber auch auf ihre optischen Eigenschaften hin untersucht. Die mit Hilfe eines neuartigen fluorolytischen Sol-Gel Verfahrens und mit der spin und dip coating Technik hergestellten Schichten auf Silizium und Edelstahl wurden mit der Rasterkraftmikroskopie auf ihre morphologische Struktur, mit der Photoelektronenspektroskopie auf ihre chemische Zusammensetzung und mit der Ellipsometrie auf ihre optischen Eigenschaften und die Schichtdicke untersucht. Die Schichten wurden auf ihre katalytischen Eigenschaften in der Dismutierungsreaktion von R22 hin untersucht. Hierbei wurde die Photoelektronenspektroskopie eingesetzt, um Ver nderungen in der Zusammensetzung zu dokumentieren. Das Verh ltnis zwischen dem Edukt und den Produkten und damit die Aktivit t der Schichten wurde mit Hilfe der Gaschromatographie bestimmt. Es musste zus tzlich eine in situ Kammer f r die Katalyseexperimente in Kombination mit der Photoelektronenspektroskopie konzipiert und angefertigt werden, da die katalytisch aktive Spezies luft- und feuchtigkeitsempfindlich sein k nnte. Die katalytische Aktivit t der Aluminiumhydroxidfluoride und der Schichten sind dabei vergleichbar. HS-AlF3 besitzt erwartungsgem eine h here katalytische Aktivit t. Um eine qualitative Aussage ber die Lage sowohl der Bindungsenergie der Photoelektronen als auch der kinetischen Energie der Augerelektronen und dem daraus resultierenden modifizierten Augerparameter a' treffen zu k nnen, wurde eine umfangreiche Referenzsubstanzdatenbibliothek angefertigt. Mit Hilfe des Wagnerplots konnte gezeigt werden, dass egal welche Precursoren mit R22 nachfluoriert wurden, ein den reinen Aluminiumfluoridphasen sehr hnliches Produkt entsteht. Die auf Siliziumsubstrat abgeschiedenen Schichten kon

Functional materials research is one of the high priority strategic areas of - st velopmentinscienceandtechnologyinthe21 century.Amongstthevarietyof functions,theinteractionofmatterwithlighttogeneratelight-drivenorpho- responsive properties has always been one of the most appealing and attr- tive areas. Recent advances in the exploitation of transition metal complexes in bringing about photo-induced functions have attracted growing attention, particularly in areas related to materials, energy, and biomedical research. Selected examples include the development of molecular triplet emitters for organic light-emitting devices (OLEDs), optical and photo-switches, pho- chemical energy storage, dye-sensitized solar cells, photochemical molecular devices(PMD)andmachines,opticalandluminescenceprobesandchemos- sors,luminescentlabelsandtagsforbiomolecules,andluminescencesignaling and imaging. This volume serves to provide the readers with some fundamentals of - minescent transition metal complexes and the recent exciting developments of a selected variety of functions and potential applications that transition metal complexes can offer for the betterment of the society in areas related to materials, energy, and biomedical research. The ?rst chapter of this volume by Balch discussed the current progress in two-coordinate luminescent gold(I) complexes. This class of complexes is well-known to show weak metal***metal interactions that lead to the iso- tionofnovel architecturesand polymorphism fromrelatively simple building blocksandtheappearanceofuniqueelectronicabsorptionandemissionsp- troscopicfeatures.Theeffectoftheenvironment,suchassolventsandcounter ions, on the luminescence behavior of a number of two-coordinate gold(I) complexes was discussed.

Transition metal catalysis belongs to the most important chemical research areas because a ubiquitous number of chemical reactions are catalyzed by transition metal compounds. Many efforts are being made by industry and academia to find new and more efficient catalysts for chemical processes. Transition metals play a prominent role in catalytic research because they have been proven to show an enormous diversity in lowering the activation barrier for chemical reactions. For many years, the search for new catalysts was carried out by trial and error, which was costly and time consuming. The understanding of the mechanism of the catalytic process is often not very advanced because it is difficult to study the elementary steps of the catalysis with experimental techniques. The development of modern quantum chemical methods for calculating possible intermediates and transition states was a breakthrough in gaining an understanding of the reaction pathways of transition metal catalyzed reactions. This volume, organized into eight chapters written by leading scientists in the field, illustrates the progress made during the last decade. The reader will obtain a deep insight into the present state of quantum chemical research in transition metal catalysis.

Carbonylation reactions are of major importance in both organic and industrial chemistry. Due to the availability, price and reactivity pattern, carbon monoxide is becoming a more and more important building block for fine and bulk chemicals. The major reaction types of carbon monoxide are comprehensively discussed by leading experts from academia and industry. The authors highlight important carbonylation reactions such as hydroformylation, alkoxy-carbonylations, co/olefin-copolymerization, Pauson-Khand reactions and others. They illustrate applications in organic synthesis and give industrial examples.
This volume is designed to provide graduate students and researchers with essential information on the use of carbon monoxide in organic synthesis. Therefore, the reader will get a balanced view of this developing and complex subject.

Chemistry of Powder Production focuses on the solid-state chemistry of powder materials and relates this to the structure, properties and preparation, and characterization techniques for these important industrial products. Additionally, the properties of the particles are discussed in relation to their surface structure and characteristics. This book describes the fundamentals of statistical methods for measuring the characteristics of particles. New advanced materials being developed in powder technology manufacturing techniques are also emphasised, including powdered materials for advanced ceramics as well as magnetic and pigment materials.

Silicon Based Polymers presents highlights in advanced research and technological innovations using macromolecular organosilicon compounds and systems, as presented in the 2007 ISPO congress. Silicon-containing materials and polymers are used all over the world and in a variety of industries, domestic products and high technology applications.

Among them, silicones are certainly the most well-known, however there are still new properties discovered and preparative processes developed all the time, therefore adding to their potential. Less known, but in preparation for the future, are other silicon containing-polymers which are now close to maturity and in fact some are already available like polysilsesquioxanes and polysilanes.

All these silicon based materials can adopt very different structures like chains, dendrimers, hyperbranched and networks, physical and chemical gels. The result is a vast array of materials with applications in various areas such as optics, electronics, ionic electrolytes, liquid crystals, biomaterials, ceramics and concrete, paints and coatings ... all needed to face the environmental, energetical and technological issues of today. Some industrial aspects of the applications of these materials will also be presented.

Humans have been "manually" extracting patterns from data for centuries, but the increasing volume of data in modern times has called for more automatic approaches. Early methods of identifying patterns in data include Bayes' theorem (1700s) and Regression analysis (1800s). The proliferation, ubiquity and incre- ing power of computer technology has increased data collection and storage. As data sets have grown in size and complexity, direct hands-on data analysis has - creasingly been augmented with indirect, automatic data processing. Data mining has been developed as the tool for extracting hidden patterns from data, by using computing power and applying new techniques and methodologies for knowledge discovery. This has been aided by other discoveries in computer science, such as Neural networks, Clustering, Genetic algorithms (1950s), Decision trees (1960s) and Support vector machines (1980s). Data mining commonlyinvolves four classes of tasks: * Classi cation: Arranges the data into prede ned groups. For example, an e-mail program might attempt to classify an e-mail as legitimate or spam. Common algorithmsinclude Nearest neighbor,Naive Bayes classi er and Neural network. * Clustering: Is like classi cation but the groups are not prede ned, so the algorithm will try to group similar items together. * Regression: Attempts to nd a function which models the data with the least error. A common method is to use Genetic Programming. * Association rule learning: Searches for relationships between variables. For example, a supermarket might gather data of what each customer buys.

In every generation the achievements in science have served mankind. The progress accomplished by one generation stimulates the next generation to even greater achievements, which may take the form of increasing, crystallizing, or detailing existing theo- ries. Other forms, generally resulting from persistence and enlight- ened fortune, open new areas of investigation previously unimagined and have an impact that may be felt for many years. An example of this latter form of achievement was the prepara- tion and elucidation of the structures of dicyclopentadienyliron (ferrocene, reported in 1951) dibenzenechromium iodide, triphenyl- chromium tristetrahydrofuranate, and numerous olefin-metal -com- plexes which provided an introduction to new types of chemical bonds- the sigma carbon-transition metal bond and the metal -complex bond. Initial progress in the field of organotransition-metal chemis- try followed the lines of interest generated separately by organic and inorganic chemistry. However, it is becoming increasingly clear that organotransit10n-metal chemistry is not only bridging these two fields, but also crosslinking many other fields of science.

Biological nitrogen fixation provides more than 50% of the total annual input of the essential element nitrogen to world agriculture. Thus, it is of immense agronomic importance and critical to food supplies, particularly in developing countries.

This book, with chapters authored by internationally renowned experts, provides a comprehensive and detailed account of the fascinating history of the process - including the surprising discoveries of molybdenum-independent nitrogenases and superoxide-dependent nitrogenase; a review of Man's attempts to emulate the biological process - most successfully with the commercially dominant Haber-Bosch process; and the current state of the understanding art with respect to the enzymes - called nitrogenases - responsible for biological nitrogen fixation.

The initial chapters use a historical approach to the biological and industrial processes, followed by an overview of assay methodologies. The next set of chapters focuses on the classical enzyme, the molybdenum nitrogenase, and details its biosynthesis, structure, composition, and mechanism of action as well as detailing both how variants of its two component proteins are constructed by recombinant DNA technology and how computational techniques are being applied. The sophisticated chemical modelling of the metal-containing clusters in the enzyme is reviewed next, followed by a description of the two molybdenum-independent nitrogenases - first, the vanadium-containing enzyme and then the iron-only nitrogenase - together with some thoughts as to why they exist Then follows an up-to-date treatment of the clearly "non-classical" properties of the superoxide-dependent nitrogenase, which more closely resembles molybdenum-containing hydroxylases and related enzymes, like nitrate reductase, that it does the other nitrogenases. Each chapter contains an extensive list of references.

This book is the self-contained first volume of a comprehensive seven-volume series. No other available work provides the up-to-date and in-depth coverage of this series and this volume. This book is intended to serve as an indispensable reference work for all scientists working in this area, including agriculture and the closely related metals-in-biology area; to assist students to enter this challenging area of research; and to provide science administrators easy access to vital relevant information.

Computational molecular and materials modeling has emerged to deliver solid technological impacts in the chemical, pharmaceutical, and materials industries. It is not the all-predictive science fiction that discouraged early adopters in the 1980s. Rather, it is proving a valuable aid to designing and developing new products and processes. People create, not computers, and these tools give them qualitative relations and quantitative properties that they need to make creative decisions.
With detailed analysis and examples from around the world, Applying Molecular and Materials Modeling describes the science, applications, and infrastructures that have proven successful. Computational quantum chemistry, molecular simulations, informatics, desktop graphics, and high-performance computing all play important roles. At the same time, the best technology requires the right practitioners, the right organizational structures, and - most of all - a clearly understood blend of imagination and realism that propels technological advances. This book is itself a powerful tool to help scientists, engineers, and managers understand and take advantage of these advances.

1. Introduction. There is much interest in the general subject of porous inorganic materials with respect to their use as sorbents or catalysts. Such inorganic solids may be microporous, mesoporous or macroporous according to the sizes of the pores within the solid. Often there is a range of pore sizes within any given solid and so there is special interest in the synthesis, characterisation and application of porous inorganic solids with well defined pores. Pores of diameter larger than 50 nm are generally termed macropores. Those with diameters of less than 2 nm are micropores and pores of intermediate size are called mesopores. Solids, which contain only mesopores, are correctly called mesoporous but very often there is a combination of different types of porosities within one given solid. The synthesis, characterisation and application of microporous solids is much more advanced than is the case with mesoporous substances. Moreover, the synthesis of crystalline mesoporous materials is one clear goal for the future but which has not been attained so far. Consequently, it is of interest to examine the current state of our knowledge of microporous materials and to examine how this may apply to mesoporous materials. Both catalytic and sorption processes could benefit from studies of mesoporous solids because the mesopores could permit diffusion of larger reactants or products than is the case in microporous materials. 2.

To the eyes of a chemist, carbon is certainly one of the most fascinating elements of the periodic table. Basically, the electronic structure and atomic size of carbon enables this element to form a variety of bonds with other elements and, most importantly, with other carbon atoms as weIl. These unique features lead to the amazingly complicated molecular structures we encounter e. g. in life sciences and organic chemistry. Of course, the technical importance of carbon is enormou- but I don't want to carry too many coals to Newcastle. Prom the viewpoint of an astrophysicist or chemist, the significance of carbon lies in the fact that it is the most abundant condensable element in space. Born in the interior of stars, and from there expelled into the interstellar medium, it initiates the formation of simple and complex molecules and of nanoscopic grains. These in turn form huge clouds in space - the birthplace of new stars and planetary systems. The decisive role of carbon in interstellar chemistry is widely accepted and the search for more and more families of interstellar carbon-bearing molecules is a topic of ongoing research. The interdisciplinary aspect of carbon also concerns its various solid forms, in which C and the other closed-cage fullerenes are certainly some of the most popular 60 newcomers.

Computational Modelling of Homogeneous Catalysis is an extensive collection of recent results on a wide array of catalytic processes. The chapters are, in most cases, authored by the researchers who have performed the calculations. The book illustrates the importance of computational modelling in homogeneous catalysis by providing up-to-date reviews of its application to a variety of reactions of industrial interest, including:

-olefin polymerization;
-hydrogenation;
-alkene/alkyne isomerization;
-hydroformylation;
-hydroboration; hydrosylation;
-dihydroxylation;
-benzannulation;
-epoxidation;
-N-N triple bond activation.

This book facilitates understanding by experimental chemists in the field on what has already been accomplished and what can be expected from calculations in the near future. In addition, the book provides computational chemists with a first-hand knowledge on the state of the art in this exciting field.