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"Molecular Gels: Materials with Self-Assembled Fibrillar Networks" is a comprehensive treatise on gelators, especially low molecular-mass gelators and the properties of their gels. The structures and modes of formation of the self-assembled fibrillar networks (SAFINs) that immobilize the liquid components of the gels are discussed experimentally and theoretically. The spectroscopic, rheological, and structural features of the different classes of low molecular-mass gelators are also presented. Many examples of the application of the principal analytical techniques for investigation of molecular gels (including SANS, SAXS, WAXS, UV-vis absorption, fluorescence and CD spectroscopies, scanning electron, transmission electron and optical microscopies, and molecular modeling) are presented didactically and in-depth, as are several of the theories of the stages of aggregation of individual low molecular-mass gelator molecules leading to SAFINs. Several actual and potential applications of molecular gels in disparate fields (from silicate replication of nanostructures to art conservation) are described. Special emphasis is placed on perspectives for future developments.This book is an invaluable resource for researchers and practitioners either already researching self-assembly and soft matter or new to the area. Those who will find the book useful include chemists, engineers, spectroscopists, physicists, biologists, theoreticians, and materials scientists.
Sommario
Introduction. Theory: Theory of Molecular AssociationAnd Thermoreversible Gelation. Growth And Chirality Amplification in Helical Supramolecular Polymers. Self Assembling Peptide Gels. Kinetics of Nucleation, Aggregation And Aging. Soft Glassy Rheology. Rheological Chaos in Wormlike Micelles And Nematic Hydronamic. Wetting of Fibres. Techniques: Gel Formation: Phase Diagrams Using Tabletop Rheology And Calorimetry. Direct-Imaging And Freeze-Fracture Cryo-Transmission Electron Microscopy of Molecular Gels. Molecular Gels And Small-Angle Scattering. X-Ray Diffraction of Poorly Organized Systems And Molecular Gels. Optical Spectroscopic Methods As A Tool to Investigate Gel Structures. Circular Dichroism for Studying Gel-Like Phases. Systems Organogels: Low Molecular Mass Organo-Gelators. Design And Functions of Low Molecular Weight Gelators Bearing Sugars And Steroids in Their Backbone. Safin Gels with Amphiphilic Molecules. Hydrogels: Advances in Molecular Hydrogels. Aqueous Gels Made of Chiral Lipid And Porphyrin Amphiphiles. Specific Systems: Rheology of Wormlike Micelles. Cryo-Tem, X-Ray Diffraction And Modeling of An Organic Hydrogel. Gelation of A Liquid-Crystalline La Phase Induced by The Proliferation of Topological Defects. Applications: Gels of Liquid Crystals And Ion-Conducting Fluids. Electron Conducting and Magnetosensetive Gels. Photoresponsive Gels. Low Molecular Mass Gelator (Lmog) Gels As Templates for Transcription. Responsive Molecular Gels. Gels As Cleaning Agents in Cultural Heritage Conservation.
Info autore
Richard G. Weiss
is Professor of Chemistry, Department of Chemistry, Georgetown University, Washington, DC, USA.
Pierre Terech
is Research Director, CNRS – Atomic Energy Center – Grenoble University, Grenoble, France.
Riassunto
"Molecular Gels: Materials with Self-Assembled Fibrillar Networks" is a comprehensive treatise on gelators, especially low molecular-mass gelators and the properties of their gels. The structures and modes of formation of the self-assembled fibrillar networks (SAFINs) that immobilize the liquid components of the gels are discussed experimentally and theoretically. The spectroscopic, rheological, and structural features of the different classes of low molecular-mass gelators are also presented. Many examples of the application of the principal analytical techniques for investigation of molecular gels (including SANS, SAXS, WAXS, UV-vis absorption, fluorescence and CD spectroscopies, scanning electron, transmission electron and optical microscopies, and molecular modeling) are presented didactically and in-depth, as are several of the theories of the stages of aggregation of individual low molecular-mass gelator molecules leading to SAFINs. Several actual and potential applications of molecular gels in disparate fields (from silicate replication of nanostructures to art conservation) are described. Special emphasis is placed on perspectives for future developments.
This book is an invaluable resource for researchers and practitioners either already researching self-assembly and soft matter or new to the area. Those who will find the book useful include chemists, engineers, spectroscopists, physicists, biologists, theoreticians, and materials scientists.
