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Home Favoriten. Sprache: Englisch. Buch kartoniert. Polymeric materials have special advantages over other materials used for the recording, storage and retrieval of information, telecommunication transmission and visualization of images. The authors describe the synthesis, the physico-chemical behavi … weiterlesen.
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Liquid crystalline and mesomorphic polymers by V. P Shibaev Book 10 editions published between and in English and held by WorldCat member libraries worldwide With contributions by internationally renowned researchers, this book provides a comprehensive overview of recent developments in a new class of liquid-crystalline compounds. The book begins with discussions of the theoretical aspects of cholesteric phase formation in polymers. The next part discusses recent work on polymers with mesogenic side groups their molecular architecture, phase behavior, and dynamics in external fields, as well as their properties in mixtures with low-mass liquid crystals.
The final group of chapters deals with mesomorphic systems that do not contain mesomorphic groups for example, derivatives of polyorganophosphasenes, cellulose, and graphitizable carbons , as well as polymer-dispersed liquid-crystal films which have important practical applications , and the new and exotic bowl-shaped liquid-crystal materials. Interdisciplinary in its approach, the book will be of interest to researchers and practitioners in polymer science, liquid-crystal research, and materials science.
Journal de Physique
Zhidkokristallicheskie kompozity by G. M Zharkova Book 2 editions published in in Russian and held by 9 WorldCat member libraries worldwide. P Shibaev Book 1 edition published in in Russian and held by 2 WorldCat member libraries worldwide. Liquid Crystalline Dendrimers Book 2 editions published in in English and held by 2 WorldCat member libraries worldwide The influence of molecular construction of LC dendrimers on their phase behavior and properties have been studied.
First to five generations of carbosilane LC dendrimers with 8, 16, 32, 64 and terminal mesogenic groups cyanobiphenyl, methoxyphenyl benzoate, ethyl lactate derivatives, etc. Investigation of thermal behavior and structure of LC dendrimers reveals smectic mesophases over a wide temperature region.
LC dendrimers with terminal ethyl-L-lactate-containing mesogenic groups exhibit a chiral smectic C mesophase possessing ferroelectricity. It was found for the first time that LC dendrimers of fifth generation have two levels of structural organization: smectic-like arrangement of mesogenic groups and supramolecular assembling of LC dendrimers in nanostructures of columnar type.
Emerging Strategies and Applications of Layer-by-Layer Self-Assembly
Hydrodynamic and electrooptical properties of solutions of LC dendrimers synthesized have been studied. At the same time, the chain character of these dendrimers is exhibited in temperature dependence of viscosity and small-scale mechanism of their orientation in the electric field, that reflects their polymeric nature. Liquid Crystalline Dendrimers: 2. Study of Phase Behaviour Structure and Mobility of mesogenic Groups of LC Dendrimers Book 2 editions published in in English and held by 2 WorldCat member libraries worldwide Carbosilane LC dendrimers of generation with 8, 16, 32 and 64 terminal phenyl benzoate mesogenic groups were synthesized all LC dendrimers with methoxyphenyl benzoate mesogenic groups of generation first to four the included are crystallized as opposite to the ones with the cyanobiphenyl groups.
Small angle X-ray scattering SAXS of LC dendrimers with cyanobiphenyl groups of generations first to fourth revealed disordered or thogonol or weakly tilted mesophases smectics A and C in this seria of LC dendrimers. Molecular mobility of mesogenic groups in LC dendrimers of first generation with different mesogenic groups were studied by means of electrooptical birefringence method Kerr effect.
Liquid Crystalline Dendrimers.
Comb-Shaped Polymers with Mesogenic Side Groups as Electro- and Photooptical Active Media
Synthesis of Five Generations of Carbosilane Liquid Crystalline Dendrimers with Terminal Cyanobiphenyl Groups Book 2 editions published in in English and held by 2 WorldCat member libraries worldwide Using the controlled layer by layer experimental technique via reiterative sequence of chemical reactions carbosilane LC dendrimers with terminal cyanobiphenyl mesogenic groups of generations 1 - 5 were synthesized.
Thermal behavior of LC dendrimers was investigated by means of polarizing optical microscopy and DSC methods. All LC dendrimers synthesized have mesophases of smectic types over wide temperature region. Values of glass transition temperatures of LC dendrimers do not depend on generation number, but isotropisation temperature raises with increasing of generation number of LC dendrimers.
LC dendrimer of generation 5 bearing cyanobiphenyl mesogenic groups displays unusual type of structural polymorphism, which is under investigation. Katalog rezultatov magnitnykh opredelenii na zemnom share, privedennykh k ravnootstoiashchim tochkam i epokham gg. Dynamics of orientational nonlinear optical response in azobenzene-dye-doped liquid-crystalline polymers 1 edition published in in English and held by 1 WorldCat member library worldwide ABSTRACT: The dynamics of the light-induced director rotation has been studied for a comb-shaped polymers in nematic phase with a small amount 0.