Ultrafast Structural Rearrangements In The Mlct Excited State For Copperi Bis Phenanthrolines In Solution

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Ultrafast Structural Rearrangements in the MLCT Excited State for Copper(I) Bis-Phenanthrolines in Solution

Author :
Publisher :
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Ultrafast Structural Rearrangements in the MLCT Excited State for Copper(I) Bis-Phenanthrolines in Solution by :

Download or read book Ultrafast Structural Rearrangements in the MLCT Excited State for Copper(I) Bis-Phenanthrolines in Solution written by and published by . This book was released on 2006 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafast excited state structural dynamics of [Cu{sup I}(dmp)2] (dmp = 2,9-dimethyl-1,10-phenanthroline) have been studied to identify structural origins of transient spectroscopic changes during the photoinduced metal-to-ligand-charge-transfer (MLCT) transition that induces an electronic configuration change from Cu(I) (3d1°) to Cu(II) (3d9). This study has important connections with the flattening of the Franck-Condon state tetrahedral geometry and the ligation of Cu(II)* with the solvent observed in the thermally equilibrated MLCT state by our previous laser-initiated time-resolved x-ray absorption spectroscopy (LITR-XAS) results. To better understand the structural photodynamics of Cu(I) complexes, we have studied both [Cu{sup I}(dmp)2] and [Cu{sup I}(dpp)2]+ (dpp = 2,9-diphenyl-1,10-phenanthroline) in solvents with different dielectric constants, viscosities and thermal diffusivities by transient absorption spectroscopy. The observed spectral dynamics suggest that a solvent-independent inner-sphere relaxation process is occurring despite the large amplitude motions due to the flattening of the tetrahedral coordinated geometry. The singlet fluorescence dynamics of photoexcited [Cu{sup I}(dmp)2]+ were measured in the coordinating solvent acetonitrile, using the fluorescence upconversion method at different emission wavelengths. At the bluest emission wavelengths, a prompt fluorescence lifetime of 66 fs is attributed to the excited state deactivation processes due to the internal conversion and intersystem crossing at the Franck-Condon state geometry. The differentiation between the prompt fluorescence lifetime with the tetrahedral Franck-Condon geometry and that with the flattened tetrahedral geometry uncovers an unexpected ultrafast flattening process in the MLCT state of [Cu{sup I}(dmp)2]+. These results provide guidance for future x-ray structural studies on ultrafast time scale, as well as for synthesis towards its applications in solar energy conversion.

Highly Efficient OLEDs

Author : Hartmut Yersin
Publisher : John Wiley & Sons
ISBN 13 : 3527339000
Total Pages : 604 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Highly Efficient OLEDs by : Hartmut Yersin

Download or read book Highly Efficient OLEDs written by Hartmut Yersin and published by John Wiley & Sons. This book was released on 2019-01-04 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieses Fachbuch eines Pioniers in diesem schnell wachsenden Fachbereich fasst die jüngsten Erkenntnisse zur Optimierung von OLEDs zusammen. Die Theorie wird ausführlich beschrieben, ebenso verschiedene organische und anorganische emittierende Materialien, Display- und Lichtanwendungen.

X-Ray Absorption and X-Ray Emission Spectroscopy

Author : Jeroen A. van Bokhoven
Publisher : John Wiley & Sons
ISBN 13 : 1118844262
Total Pages : 896 pages
Book Rating : 4.1/5 (188 download)

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Book Synopsis X-Ray Absorption and X-Ray Emission Spectroscopy by : Jeroen A. van Bokhoven

Download or read book X-Ray Absorption and X-Ray Emission Spectroscopy written by Jeroen A. van Bokhoven and published by John Wiley & Sons. This book was released on 2016-01-08 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades, remarkable and often spectacular progress has been made in the methodological and instrumental aspects of x–ray absorption and emission spectroscopy. This progress includes considerable technological improvements in the design and production of detectors especially with the development and expansion of large-scale synchrotron reactors All this has resulted in improved analytical performance and new applications, as well as in the perspective of a dramatic enhancement in the potential of x–ray based analysis techniques for the near future. This comprehensive two-volume treatise features articles that explain the phenomena and describe examples of X–ray absorption and emission applications in several fields, including chemistry, biochemistry, catalysis, amorphous and liquid systems, synchrotron radiation, and surface phenomena. Contributors explain the underlying theory, how to set up X–ray absorption experiments, and how to analyze the details of the resulting spectra. X-Ray Absorption and X-ray Emission Spectroscopy: Theory and Applications: Combines the theory, instrumentation and applications of x-ray absorption and emission spectroscopies which offer unique diagnostics to study almost any object in the Universe. Is the go-to reference book in the subject for all researchers across multi-disciplines since intense beams from modern sources have revolutionized x-ray science in recent years Is relevant to students, postdocurates and researchers working on x-rays and related synchrotron sources and applications in materials, physics, medicine, environment/geology, and biomedical materials

Electrophosphorescent Materials and Devices

Author : Mark Thompson
Publisher : CRC Press
ISBN 13 : 1000190838
Total Pages : 1113 pages
Book Rating : 4.0/5 (1 download)

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Book Synopsis Electrophosphorescent Materials and Devices by : Mark Thompson

Download or read book Electrophosphorescent Materials and Devices written by Mark Thompson and published by CRC Press. This book was released on 2023-12-14 with total page 1113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic LEDs (OLEDs) in mobile displays have been in large-scale production for over a decade, and OLED-based televisions are rapidly gaining traction in the marketplace. OLEDs are on the verge of entering the solid-state lighting market in a big way. The OLED technology gives higher color purity and is more efficient than any of the competing technologies. When produced at scale, OLEDs are also economical. A key limitation in the development of OLEDs was the efficient conversion of all of the electrical energy put into the device into light. Until the late 1990s, the maximum efficiency of OLEDs was limited to 25% (photons/electrons), but this limitation was removed and OLEDs with 100% efficiency were reported in the early 2000s. This advance in OLED technology was driven by the author of this book. He and his collaborators developed electrophosphorescence, which is essential in reaching the 100% efficiency that is now commonplace in commercial devices.

On Solar Hydrogen and Nanotechnology

Author : Lionel Vayssieres
Publisher : John Wiley & Sons
ISBN 13 : 0470823984
Total Pages : 706 pages
Book Rating : 4.4/5 (78 download)

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Book Synopsis On Solar Hydrogen and Nanotechnology by : Lionel Vayssieres

Download or read book On Solar Hydrogen and Nanotechnology written by Lionel Vayssieres and published by John Wiley & Sons. This book was released on 2010-01-26 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: More energy from the sun strikes Earth in an hour than is consumed by humans in an entire year. Efficiently harnessing solar power for sustainable generation of hydrogen requires low-cost, purpose-built, functional materials combined with inexpensive large-scale manufacturing methods. These issues are comprehensively addressed in On Solar Hydrogen & Nanotechnology – an authoritative, interdisciplinary source of fundamental and applied knowledge in all areas related to solar hydrogen. Written by leading experts, the book emphasizes state-of-the-art materials and characterization techniques as well as the impact of nanotechnology on this cutting edge field. Addresses the current status and prospects of solar hydrogen, including major achievements, performance benchmarks, technological limitations, and crucial remaining challenges Covers the latest advances in fundamental understanding and development in photocatalytic reactions, semiconductor nanostructures and heterostructures, quantum confinement effects, device fabrication, modeling, simulation, and characterization techniques as they pertain to solar generation of hydrogen Assesses and establishes the present and future role of solar hydrogen in the hydrogen economy Contains numerous graphics to illustrate concepts, techniques, and research results On Solar Hydrogen & Nanotechnology is an essential reference for materials scientists, physical and inorganic chemists, electrochemists, physicists, and engineers carrying out research on solar energy, photocatalysis, or semiconducting nanomaterials, both in academia and industry. It is also an invaluable resource for graduate students and postdoctoral researchers as well as business professionals and consultants with an interest in renewable energy.

Hunting Log Book

Author : Rogue Plus Publishing
Publisher : Hunting Log Book
ISBN 13 : 9781724018151
Total Pages : 104 pages
Book Rating : 4.0/5 (181 download)

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Book Synopsis Hunting Log Book by : Rogue Plus Publishing

Download or read book Hunting Log Book written by Rogue Plus Publishing and published by Hunting Log Book. This book was released on 2018-09-25 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Do you often experience a different result every time you hunt? Do the temperature and date (photoperiodism) affect the number of game or quarry seen? How about the wind? If you do not keep a hunting log, then you may never know. Get our Hunting Log Book, begin a journal and apply useful information and clues from your log book to make yourself a more successful hunter. This Hunting Log Book is designed to be: PERSONAL. Hunting needs determination, focus, and purpose. This Hunting Log Book is specially made for hunters so they can write about their hunting activities. The logbook acts as a database, where you can store information such as time, species, size, location, weapon, shot, captured and any other notes. It also have sections for weather condition, hunting buddies, activity, temperature and etc. By storing this information you'll be a smarter hunter by using the information to your advantage. If nothing else, it'll be fun to look back through your journal, reminisce and look over the above items. CONVENIENT - You can't beat a book like this. It doesn't need batteries, doesn't take you time to log in and is the perfect companion for your hunting trips. IT'S BUILT TO LAST- The sturdy cover is made of tough paperback with strong, secure professional trade binding so the pages won't fall out after a few months of use. WELL-CRAFTED INTERIOR- We used only thick, white paper to avoid ink bleed-through. The lines are printed, clear, thin and soft gray for easy visibility and less visual distractions when you are reading or writing. PERFECT SIZE- With its 15.24 x 22.86 cm (6'' x 9'') dimensions, you can squeeze it into a bag with ease. It's the perfect size- easy to carry during your hunting trips. COOL COVERS!- To top it all, we have an array of cover designs for you to choose from. Get inspired by our collection of truly creative book covers. We stand for quality and aim to provide the best writing experience with our notebooks. With this Hunting Log Book, you can study your own data and make some good educated guesses regarding where to hunt next and what changes to make. Grab a copy now!

Chemistry for Sustainable Development

Author : Minu Gupta Bhowon
Publisher : Springer
ISBN 13 : 9789400796782
Total Pages : 0 pages
Book Rating : 4.7/5 (967 download)

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Book Synopsis Chemistry for Sustainable Development by : Minu Gupta Bhowon

Download or read book Chemistry for Sustainable Development written by Minu Gupta Bhowon and published by Springer. This book was released on 2014-02-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry for Sustainable Development is a collection of selected papers by the participants of the International Conference on Pure and Applied Chemistry (ICPAC 2010) on the theme of “Chemistry for Sustainable Development” held in Mauritius in July 2010. In light of the significant progresses and challenges in the development and implementation of green and sustainable chemistry, this volume reviews the recent results generated by a more efficient use of resources to minimize carbon footprints, to foster the eradication or minimisation of solvent use in chemistry, and to deliver processes which lead to increased harmony between chemistry and the environment. Chemistry for Sustainable Development is written for graduates, postgraduates, researchers in industry and academia who have an interest in the fields ranging from fundamental to applied chemistry.

Polymer Mechanochemistry

Author : Roman Boulatov
Publisher : Springer
ISBN 13 : 3319228250
Total Pages : 443 pages
Book Rating : 4.3/5 (192 download)

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Book Synopsis Polymer Mechanochemistry by : Roman Boulatov

Download or read book Polymer Mechanochemistry written by Roman Boulatov and published by Springer. This book was released on 2015-10-17 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.

Photoluminescent Materials and Electroluminescent Devices

Author : Nicola Armaroli
Publisher : Springer
ISBN 13 : 3319593048
Total Pages : 397 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Photoluminescent Materials and Electroluminescent Devices by : Nicola Armaroli

Download or read book Photoluminescent Materials and Electroluminescent Devices written by Nicola Armaroli and published by Springer. This book was released on 2017-05-25 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Solar Cells

Author : S. K. Sharma
Publisher : Springer Nature
ISBN 13 : 3030363546
Total Pages : 354 pages
Book Rating : 4.0/5 (33 download)

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Book Synopsis Solar Cells by : S. K. Sharma

Download or read book Solar Cells written by S. K. Sharma and published by Springer Nature. This book was released on 2020-01-07 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the rapidly developing class of solar cell materials and designed to provide much needed information on the fundamental principles of these materials, together with how these are employed in photovoltaic applications. A special emphasize have been given for the space applications through study of radiation tolerant solar cells. This book present a comprehensive research outlining progress on the synthesis, fabrication and application of solar cells from fundamental to device technology and is helpful for graduate students, researchers, and technologists engaged in research and development of materials.

Spin-Crossover Materials

Author : Malcolm A. Halcrow
Publisher : John Wiley & Sons
ISBN 13 : 1118519310
Total Pages : 729 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Spin-Crossover Materials by : Malcolm A. Halcrow

Download or read book Spin-Crossover Materials written by Malcolm A. Halcrow and published by John Wiley & Sons. This book was released on 2013-01-07 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: The phenomenon of spin-crossover has a large impact on the physical properties of a solid material, including its colour, magnetic moment, and electrical resistance. Some materials also show a structural phase change during the transition. Several practical applications of spin-crossover materials have been demonstrated including display and memory devices, electrical and electroluminescent devices, and MRI contrast agents. Switchable liquid crystals, nanoparticles, and thin films of spin-crossover materials have also been achieved. Spin-Crossover Materials: Properties and Applications presents a comprehensivesurvey of recent developments in spin-crossover research, highlighting the multidisciplinary nature of this rapidly expanding field. Following an introductory chapter which describes the spin-crossover phenomenon and historical development of the field, the book goes on to cover a wide range of topics including Spin-crossover in mononuclear, polynuclear and polymeric complexes Structure: function relationships in molecular spin-crossover materials Charge-transfer-induced spin-transitions Reversible spin-pairing in crystalline organic radicals Spin-state switching in solution Spin-crossover compounds in multifunctional switchable materials and nanotechnology Physical and theoretical methods for studying spin-crossover materials Spin-Crossover Materials: Properties and Applications is a valuable resource for academic researchers working in the field of spin-crossover materials and topics related to crystal engineering, solid state chemistry and physics, and molecular materials. Postgraduate students will also find this book useful as a comprehensive introduction to the field.

Photochemistry and Photophysics of Coordination Compounds II

Author : Vincenzo Balzani
Publisher : Springer
ISBN 13 : 3540733493
Total Pages : 336 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Photochemistry and Photophysics of Coordination Compounds II by : Vincenzo Balzani

Download or read book Photochemistry and Photophysics of Coordination Compounds II written by Vincenzo Balzani and published by Springer. This book was released on 2007-08-07 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photochemistry (a term that broadly speaking includes photophysics) is abranchofmodernsciencethatdealswiththeinteractionoflightwithmatter and lies at the crossroadsof chemistry, physics, and biology. However, before being a branch of modern science, photochemistry was (and still is today), an extremely important natural phenomenon. When God said: “Let there be light”, photochemistry began to operate, helping God to create the world as wenowknowit.Itislikelythatphotochemistrywasthesparkfortheoriginof life on Earth and played a fundamental role in the evolution of life. Through the photosynthetic process that takes place in green plants, photochemistry is responsible for the maintenance of all living organisms. In the geological past photochemistry caused the accumulation of the deposits of coal, oil, and naturalgasthat wenowuseasfuels.Photochemistryisinvolved inthecontrol ofozoneinthestratosphereandinagreatnumber ofenvironmentalprocesses thatoccurintheatmosphere,inthesea,andonthesoil.Photochemistryisthe essenceoftheprocessofvisionandcausesavarietyofbehavioralresponsesin living organisms. Photochemistry as a science is quite young; we only need to go back less than one century to ?nd its early pioneer [1]. The concept of coordination compound is also relatively young; it was established in 1892, when Alfred Werner conceived his theory of metal complexes [2]. Since then, the terms coordination compound and metal complex have been used as synonyms, even if in the last 30 years, coordination chemistry has extended its scope to the binding ofall kinds of substrates [3, 4].

Transition Metals in Coordination Environments

Author : Ewa Broclawik
Publisher : Springer
ISBN 13 : 3030117146
Total Pages : 532 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Transition Metals in Coordination Environments by : Ewa Broclawik

Download or read book Transition Metals in Coordination Environments written by Ewa Broclawik and published by Springer. This book was released on 2019-03-16 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the electronic properties of transition metals in coordination environments. These properties are responsible for the unique and intricate activity of transition metal sites in bio- and inorganic catalysis, but also pose challenges for both theoretical and experimental studies. Written by an international group of recognized experts, the book reviews recent advances in computational modeling and discusses their interplay using experiments. It covers a broad range of topics, including advanced computational methods for transition metal systems; spectroscopic, electrochemical and catalytic properties of transition metals in coordination environments; metalloenzymes and biomimetic compounds; and spin-related phenomena. As such, the book offers an invaluable resource for all researchers and postgraduate students interested in both fundamental and application-oriented research in the field of transition metal systems.

Chiroptical Molecular Switches

Author : Anne Marie Schoevaars
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)

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Book Synopsis Chiroptical Molecular Switches by : Anne Marie Schoevaars

Download or read book Chiroptical Molecular Switches written by Anne Marie Schoevaars and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Supramolecular Chemistry

Author : Vincenzo Balzani
Publisher : Springer Science & Business Media
ISBN 13 : 9401124922
Total Pages : 465 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Supramolecular Chemistry by : Vincenzo Balzani

Download or read book Supramolecular Chemistry written by Vincenzo Balzani and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first NATO Science Forum was held in Biarritz in September 1990. This Taormina Conference is the second in a series that we wish to be a long one and I believe that it has equalled the success of its predecessor. In setting up these meetings the NATO Science Committee wanted to gather leading experts to review fields of strong present interest. It was intended that presentations and discussions should pay special attention to potential developments. This "forward look" is indeed precious to us in mapping out the evolution of our Science Programme but more importantly, it is an essential part of the progress of Science. I believe that NATO, being able to bring together eminent scientists from both sides of the Atlantic, is in a priviliged position to provide this service to our Scientific Community. It was only proper that Chemistry should be one of the first areas to be targeted: a central science with many rich borders touching on other disciplines, it deserved the full attention of our Committee. In its vast domain, among many possible topics, the present one was carefully selected and its choice resulted from an extensive consultation of many leading chemists. The large fraction of replies which pointed to Supramolecular Chemistry left us with little doubt about the timeliness of a Forum in this area and the strong interest attached to it.

Photochemistry of Polypyridine and Porphyrin Complexes

Author : K. Kalyanasundaram
Publisher :
ISBN 13 : 9780123949929
Total Pages : 626 pages
Book Rating : 4.9/5 (499 download)

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Book Synopsis Photochemistry of Polypyridine and Porphyrin Complexes by : K. Kalyanasundaram

Download or read book Photochemistry of Polypyridine and Porphyrin Complexes written by K. Kalyanasundaram and published by . This book was released on 1992 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polypyridyl and porphyrin complexes demonstrate an excitingly rich photochemistry. These systems have important applications in photocatalysis, photochemical conversion and storage of solar energy, and photosynthesis. The book covers the basic concepts of inorganic electronic spectroscopy and photochemistry and then discusses excited state production, relaxation, and photochemical reactions. Covers two important series of complexes in comprehensive surveys Written to serve researchers who need a rapid entry into the field Presents concepts and techniques useful to advanced students

Olefin Polymerization

Author : Walter Kaminsky
Publisher : Wiley-VCH
ISBN 13 : 9783527317424
Total Pages : 0 pages
Book Rating : 4.3/5 (174 download)

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Book Synopsis Olefin Polymerization by : Walter Kaminsky

Download or read book Olefin Polymerization written by Walter Kaminsky and published by Wiley-VCH. This book was released on 2006-08-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an enormous velocity, olefin polymerization has expanded to one of the most significant fields in polymers since the first industrial use about 50 years ago. In 2005, 100 million tons of polyolefins were produced - the biggest part was catalyzed by metallorganic compounds. The Hamburg Macromolecular Symposium 2005 with the title "Olefin Polymerization" involved topics such as new catalysts and cocatalysts, kinetics, mechanism and polymer reaction engineering, synthesis of special polymers, and characterization of polyolefins. The conference combined scientists from different disciplines to discuss latest research results of polymers and to offer each other the possibility of cooperation. This is reflected in this volume, which contains invited lectures and selected posters presented at the symposium.