Polyoxometalate Chemistry: Some Recent Trends PDF Download

Author: Francis Secheresse
Publisher: World Scientific
ISBN: 9814458996
Category : Science
Languages : en
Pages : 360

View

Book Description
The book highlights recent prominent results in the domain of the synthesis of new polyoxometalates with a specific attention to polyoxothioanions, and provides some novelties and perspectives in selected domains such as magnetism, luminescence and nanochemistry, and macroions self-assembly in solutions. The case of “one-pot” syntheses often used and reported in POMs synthesis is studied in terms of more complex solution speciation processes related to highly dynamical situation connected to factors such as pH, ionic strength, reaction time, temperature, counterion nature, concentration of starting materials, presence of electron donors and redox potentials. The behavior of macroions (2nm-6nm size range) in solution is shown to be quite different from the simple ionic solution or colloidal systems (Debye-Huckel model). Their self-assembling into a single-layered, spherical, hollow vesicle structure, namely the “blackberry” structure, is clearly described. Examples of spin clusters with tunable interactions are given and single molecule magnets based on POMs are specifically tackled. Besides paramagnetic transition metal centres and lanthanoid ions encapsulated in archetypal lacunary polyoxoanions, magnetically functionalized Kleperates are described, their discovery tracing back nearly 15 years.

Author: Laurent Ruhlmann
Publisher: Nova Science Publishers
ISBN: 9781634826563
Category : Metallic oxides
Languages : en
Pages : 0

View

Book Description
The book attempts to make available the recent developments in polyoxometalate (POM) synthesis. The focus centralises on the functionalisation of POMs with covalently organic moiety (for instance, the use of exogenous ligands such as carboxylate or bisphosphonate). It also delves into the development of lanthanide POMs, or the formation of blackberry-like assemblies. Likewise, the properties (redox properties, magnetism, etc...), and its applications (homogeneous and heterogeneous catalysis, photocatalysis, photoelectrocatalysis and photovoltaic cell development, etc.) are also analysed. This application concerns also the catalysis of H2O oxidation, photodegradation of pollutants, and reduction of cationic metal to form original nanoparticles. The use of polyoxometalates as catalysts for biologically relevant reactions is also considered. One of the other aims of the book is to highlight some recent developments and perspectives in the domain of materials and their applications. For instance, the use of POM-organic photosensitiser hybrids can also be achieved for application in the generation of photocurrent and the development of new types of solar cells. By combining POMs with electrically active materials, a variety of applications have been explored and several examples of POM-based electronic materials are presented in this book.

Author:
Publisher: Academic Press
ISBN: 0128111062
Category : Science
Languages : en
Pages : 360

View

Book Description
Polyoxometalate Chemistry continues a long-running series that describes recent advances in scientific research, in particular, in the field of inorganic chemistry. Several highly regarded experts, mostly from academia, contribute on specific topics. The current issue focuses on recent advances in the development and application of polyoxometalate complexes in areas such as solution chemistry, self-organization, solar fuels, non-aqueous chemistry, spintronics, nanoscience and catalysis. - Presents a single monograph on recent developments in polyoxometalate chemistry as written by scientific leaders in this field - Concise and informative presentations cover a wide range of topics in this field of chemistry - Contains detailed literature references, enabling the reader to move on to the source of the reported work where more details can be found - Provides a solid presentation of a hard-cover book of excellent technical quality

Author: Majid M. Heravi
Publisher: Elsevier
ISBN: 0323906583
Category : Science
Languages : en
Pages : 390

View

Book Description
Heteropolyacids as Highly Efficient and Green Catalysts Applied in Organic Transformations introduces heteropolyacids (HPAs) as promising candidates for use as green catalysts. This book initially presents an overview of chemistry of HPAs, including the history of their discovery and applications, systematic classifications, solubility, coordination and binding chemistry, isomerization, stability, redox activity, acidic properties, basicity, skeleton structure, structure types, self-assemblage, surface area, electrochemical behavior, methods of investigation, and characterization. Other sections present and compare the applications of HPAs as homogeneous and heterogeneous catalysts. The book provides readers with a basic-to-advanced range of knowledge on how useful and green HPAs can be used for use as catalysts in organic transformations and even the synthesis of complex organic molecules. - Focuses on applications of HPAs as catalysts, but also includes basic information on HPAs to make it useful to those researchers and scientists whose activities are focused on biochemical analysis, electrochemistry, electrochemical devices, protection of corrosion, medicine and photo-catalyzed reactions - Includes a subdivision devoted to HPA-catalyzed multicomponent reactions for the synthesis of some biologically active compounds via a double-green strategy - Illustrates reactions with approximately 100 chemical reaction schemes to aid understanding

Author: Shuang-Quan Zang
Publisher: John Wiley & Sons
ISBN: 352784208X
Category : Science
Languages : en
Pages : 338

View

Book Description
Atomically Precise Metal Clusters Thorough discussion on how surface modification and self-assembly play roles in the atomically precise formation and property tailoring of molecular clusters Atomically Precise Metal Clusters: Surface Engineering and Hierarchical Assembly summarizes and discusses the surface modification, assembly, and property tailoring of a wide variety of nanoclusters, including the well-explored metal clusters, addressing the structure–property relationships throughout. The atomic-level control in synthesis, new types of structures, and physical/chemical properties of nanoclusters are illustrated in various chapters. The controlled modification and assembly of metal nanoclusters is expected to have a major impact on future nanoscience research and other areas, with distinctive metal cluster-based function materials with precise structures uncovering exciting opportunities in both fundamental research and practical applications. Written by a highly qualified academic with significant research experience in the field, Atomically Precise Metal Clusters includes information on: Ligand engineering and assembly of coinage metal nanoclusters such as gold, silver, and copper Recent advances in post-modification of polyoxometalates and small transition metal chalcogenide superatom clusters Synthesis and assembly of cadmium chalcogenide supertetrahedral clusters and modification and assembly of Fe-S clusters Indium phosphide magic-sized clusters, ligand-tailoring platinum and palladium clusters, and metal oxo clusters (MOCs) Enabling access to desired functions in metal clusters for catalysis, optics, biomedicine, and other fields through surface engineering and supramolecular assembly A timely and comprehensive book that summarizes the recent progress in the surface modification and self-assembly of metal nanoclusters, Atomically Precise Metal Clusters provides essential guidance for graduate students and advanced researchers in material science, chemistry, biomedicine, and other disciplines.

Author: Nuno A.G. Bandeira
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110481367
Category : Science
Languages : en
Pages : 362

View

Book Description
This book gives an overview of recent integrated and inter-disciplinary approaches between chemical experiment and theory in a variety of fields, from polymer science to materials chemistry and ranging from the design of tailored properties to catalysis and reactivity, building on the well-established success of Density Functional Theory as the foremost quantum chemical method to provide qualitative and quantitative interpretation of results from the chemical laboratory. The combination of several characterization techniques with an understanding at the molecular level of chemical and physical phenomena are the main focal point of the subject matter.

Author: Stefanie Dehnen
Publisher: Springer
ISBN: 3319522965
Category : Science
Languages : en
Pages : 386

View

Book Description
Chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience.

Author: H. van der Goot
Publisher: Elsevier
ISBN: 0080543243
Category : Science
Languages : en
Pages : 259

View

Book Description
This volume of Pharmacochemistry Library comprises the text of invited lectures presented at the 11th Noordwijkerhout-Camerino Symposium Trends in Drug Research, held in Noordwijkerhout, The Netherlands, from 11-15 May 1997. In the programme attention has been given to the generation of new biological target systems and the generation of new lead molecules, with presentations on e.g. combinatorial chemistry, compound libraries, database search, high throughput screening and molecular biology. Other topics discussed were the perspectives for new medicines for the gastro-intestinal tract, the major developments in the search for effective anti-HIV drugs and new aspects in synthetic approaches. In a special session three topics which currently draw much attention were discussed: How to deal with the major problem of resistance against antimirobial agents? Can the apoptosis mechanism be used as a drug target? Is the newly observed phenomenon of inverse agonism a general principle and has it consequences for drug development (and use?)

Author: Anjali Patel
Publisher: Springer Science & Business Media
ISBN: 9400767102
Category : Science
Languages : en
Pages : 269

View

Book Description
Over the past twenty years, Catalysis by Heteropolyacids (HPAs) has received wide attention and led to new and promising developments both at academic and industrial level. In particular, heterogeneous catalysis is particularly attractive because it generally satisfies most of green chemistry’s requirements. By emphasizing the development of third generation catalysts, this volume presents trends and opportunities in academic and industrial research. The book appeals to postgraduates, researchers, and chemists working in the field of environmentally benign catalysts as well as catalytic processes.

Author: C N R Rao
Publisher: World Scientific
ISBN: 9814470155
Category : Technology & Engineering
Languages : en
Pages : 635

View

Book Description
In this collection, the author has compiled a set of his papers representing some of the highlights of materials chemistry. It features a section on oxidic materials, which includes high-temperature superconductivity, colossal magnetoresistance, electronic phase separation and multiferroics. The author has also included novel methods for making gallium nitride, boron nitride and such materials, by using precursors and the urea decomposition route. Moreover, there is a section dealing with open-framework and hybrid materials of which the latter has a great future since one can make use of the rigidity of inorganic structures and the functionality and flexibility of the organic residues to design materials with novel properties.