Synthesis and Characterization of Liquid Crystalline Supramolecular Architecture by a Combination of Molecular Recognition and Polymerization Reaction PDF Download
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Author: Cheol-Hee Ahn
Publisher:
ISBN:
Category :
Languages : en
Pages : 568
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Author: Cheol-Hee Ahn
Publisher:
ISBN:
Category :
Languages : en
Pages : 568
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 730
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![Technologischer Ausrüstungskomplex MS-1520 [fünfzehnhundertzwanzig] BM, Beschreibung und Nutzung PDF](https://books.google.com/books/content/images/frontcover/j4bujwEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 62
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Author: Nissim Garti
Publisher: John Wiley & Sons
ISBN: 1118336577
Category : Science
Languages : en
Pages : 503
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Book Description
This book will describe fundamentals and recent developments in the area of Self-Assembled Supramolecular Architecture and their relevance to the understanding of the functionality of membranes as delivery systems for active ingredients. As the heirarchial architectures determine their performance capabilities, attention will be paid to theoretical and design aspects related to the construction of lyotropic liquid crystals: mesophases such as lamellar, hexagonal, cubic, sponge phase micellosomes. The book will bring to the reader mechanistic aspects, compositional considerations, transition within phases, solubilization capacities, drug entrapment and release mechanisms and transmembrane, transdermal, and other transport phenomena. It will stress the importance of these mesostructures to crystallization and polymorphism of drugs, fats, and nutraceuticals and will discuss regioselectivity of organic and enzymatic reactions that take place at interfaces and within the channels of the mesophase. The book will bring studies on the use of these mesophase as crystallization or particulation media for the formation of nanoparticles and nanocrystals. Chapters will discuss applications in the areas of pharmaceuticals, food, cosmetics, plastics, paper, agro-chemistry and industrial applications.
Author: Tai-Shung Chung
Publisher: CRC Press
ISBN: 9781420012521
Category : Technology & Engineering
Languages : en
Pages : 392
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Book Description
Liquid crystal polymers are sometimes called super polymers--with good reason. Their wide range of exceptional properties and ease of processing make them design candidates for many demanding applications. This new book provides a thorough review of LCP technology with the emphasis on the chemistry, synthesis and characterization of the material in its many variants. Additional chapters cover processing and applications. From the Editor's Preface The field of thermotropic liquid crystalline polymers has grown substantially in the last two decades, with fundamental research, publications, commercial products, and patents. In the 1980's, Dr. Ralph Miano led my colleagues and me at Hoechst Celanese in commercializing the first thermotropic liquid crystalline polymers, based on Dr. Gordon Calundann's composition patents. Today, more than seven companies have produced thermotropic liquid crystalline polymer materials, with at least 50 variants available. Hence, it is timely to compile a comprehensive review on the nature of this type of material and the ongoing progress in this field.... The goals of this book are to summarize previous work, provide new insights into this class of polymers, and add to the understanding of the formation of liquid crystallinity. This book covers a wide range of topics and addresses different disciplines in the field. The chapters are arranged as a learning scheme for the professional, from basic science to applied engineering. The first few chapters summarize the syntheses of various polyester, polyester-amid, and polyimide liquid crystalline polymers. The science and origins of liquid crystal formation are revealed. Next, we introduce the characterizations of these materials by their different chemical and physical aspects. Because most commercially available thermotropic liquid crystalline polymers have been used in the form of composites, we have also incorporated a chapter on polymer blends, detailing blending mechanisms and resultant properties. Two chapters on thermosetting liquid crystalline polymers integrate them with other topics, because of their unique importance and their applications for microelectronics and packaging. The final chapter deals with the engineering and processing aspects of thermoplastic liquid crystalline polymers for a variety of applications.
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 806
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Author: Vijay Kumar Thakur
Publisher: Springer
ISBN: 3319228943
Category : Technology & Engineering
Languages : en
Pages : 627
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Book Description
This book introduces anisotropic innovations in liquid crystalline polymers as well as new nanocomposite materials and testing techniques. The authors detail the newest discoveries of material properties, material types and phases, and material characterization. This interdisciplinary work creates valuable links that strengthen the approach to the evolving field of liquid crystalline polymers/ materials.
Author: Karen Villazor Martin
Publisher:
ISBN:
Category :
Languages : en
Pages : 352
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Book Description
Mesomorphic organizations provide a powerful and efficient method for the preorganization of molecules to create synthetic materials with controlled supramolecular architectures. Incorporation of polymerizable groups within a liquid crystalline template can set the stage for the synthesis of anisotropic molecular networks. This dissertation details the synthesis and characterization of chiral liquid crystals and crosslinked polymer networks, with an eye toward applications in asymmetric catalysis. Chapter One gives an introduction to the study of liquid crystals and their phases. Chapters Two and Three describe the incorporation of terminal olefins as polymerizable groups within a columnar liquid crystalline template as an effective method for the synthesis of robust, anisotropic polymeric materials. Upon in situ acyclic diene metathesis (ADMET) polymerization, the original mesophase order is retained. Chapter Two involves the room temperature polymerization of iron(III) tris(diketonate) liquid crystals, resulting in densely crosslinked materials. The focus of Chapter Three is the polymerization of dioxomolydenum-based liquid crystals, performed at high temperature, and their potential to serve as catalysts for asymmetric epoxidation. In Chapter Four, a different approach towards the synthesis of catalytically active anisotropic materials is taken, incorporating well-established, transition metal catalysts within a liquid crystalline framework. Progress towards the formation of liquid crystal phases containing C2- symmetric bis(oxazoline) and pincer ligands is detailed. Finally, Chapter Five describes the immobilization of chiral monodentate oxazoline ligands for use as catalysts in asymmetric cyclopropanation. Preliminary results indicate that the heterogeneous system gives higher enantioselectivities than the analogous homogeneous system.
Author: L. L. Chapoy
Publisher: Springer Science & Business Media
ISBN: 9400949340
Category : Science
Languages : en
Pages : 334
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Book Description
This volume contains an eclectic collection of 22 papers on liquid crystalline polymers presented at the Sixth Polymer Workshop, in the series sponsored by the European Science Foundation, entitled: 'Liquid Crystal Polymer Systems', in Gentofte, Denmark, 12-14 September 1983. Since a contribution to this volume was strictly voluntary, and in some cases represents a considerably expanded version of that which was presented, it is strictly speaking not correct to term this a 'proceedings'. A description of the aims and purposes of the European Science Foundation with respect to the polymer area has been presented in: Shell Polymers, Vol. 5, No.2, pp. 34-35, 1981. The papers given here represent a cross-section of current research interests in liquid crystalline polymers in the areas of theory, synthesis, characterization, structure-property relationships and applications. At least some of the current interest is motivated by attempts to practically exploit the novel properties of these materials in the developing tech nologies of high strength fibres and advanced materials for constructional purposes, but also for functional materials in the areas of information retrieval, electronics and opto-electronics applications. The editor wishes to thank all those involved for their courtesy and co-operation.
Author: Gautam R. Desiraju
Publisher: John Wiley & Sons
ISBN: 0470511427
Category : Science
Languages : en
Pages : 326
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Book Description
Supramolecular chemistry involves the study and synthesis of very large molecules which are used in complex chemical reactions, and have great potential in areas such as medicine, electronics, and optics. Offers a comprehensive overview of crystals and supramolecular entities.
