Molecular Encapsulation

Molecular Encapsulation
Author: Udo H. Brinker
Publisher: John Wiley & Sons
Total Pages: 477
Release: 2011-07-07
Genre: Science
ISBN: 1119957109

The inclusion of small guest molecules within suitable host compounds results in constrained systems that imbue novel properties upon the incarcerated organic substrates. Supramolecular tactics are becoming widely employed and this treatise spotlights them. Often, the impact of encapsulation on product formation is substantial. The use of constrained systems offers the means to steer reactions along desired pathways. A broad overview of various supramolecular approaches aimed to manipulate chemical reactions are featured. The following topics are covered in detail: - general concepts governing the assembly of the substrate with the reaction vessel - preparation of molecular reactors - stabilization of reactive intermediates - reactions in water, in organic solvents, and in the solid state - photochemical reactions - reactions with unusual regioselectivity Molecular Encapsulation: Organic Reactions in Constrained Systems is an essential guide to the art of changing the outcome and the selectivity of a chemical reaction using nano-sized reaction vessels. It will find a place on the bookshelves of students and researchers working in the areas of supramolecular chemistry, nanotechnology, organic and pharmaceutical chemistry, and materials science as well.

Encapsulation of Active Molecules and Their Delivery System

Encapsulation of Active Molecules and Their Delivery System
Author: Shirish Sonawane
Publisher: Elsevier
Total Pages: 379
Release: 2020-03-24
Genre: Technology & Engineering
ISBN: 0128193646

Encapsulation of Active Molecules and Their Delivery System covers the key methods of preparation of encapsulation, as well as release mechanisms and their applications in food, biotechnology, metal protection, drug delivery, and micronutrients delivery in agriculture. The book also provides real-life examples of applications in food and other industries. Sections encompasses (i) Synthesis and characterization methods of micro- and nanocarriers as the delivery systems, (ii) Up-to-date encapsulation techniques in the areas of pharmaceuticals, nutraceuticals and corrosion, (iii) The release methods of the encapsulated materials, and (iv) Industry perspectives, including scale up of the processes. - Focuses on encapsulation processes in chemical and materials engineering and biotechnology - Provides a relevant resource for the pharmaceutical and food industries - Presents wide coverage on the entrapment of molecules that scales-up to industrial sized needs

The Encapsulation Phenomenon

The Encapsulation Phenomenon
Author: Yan Voloshin
Publisher: Springer
Total Pages: 653
Release: 2016-04-27
Genre: Science
ISBN: 3319277383

This fundamental book presents the most comprehensive summary of the current state of the art in the chemistry of cage compounds. It introduces different ways of how ions and molecules can be encapsulated by three-dimensional caging ligands to form molecular and polymeric species: covalent, supramolecular, and coordination capsules. The authors introduce their classification, reactivity, and selected practical applications. Because encapsulation can isolate caged ions and molecules from external factors, the encapsulated species can exhibit unique physical and chemical properties. The resulting specific reactivity and selectivity can open up a range of applications, including chemical separation, recognition, chiral separation, catalysis, applications as sensors or probes, as molecular or supramolecular devices, or molecular carriers (cargo).A particularly strong emphasis in this book is on the summary and review of the synthesis of various types of cage compounds. Readers will find over 850 literature references summarized and clearly represented in over 600 schemes and illustrations. The book is structured by the types of caging ligands (covalent, supramolecular, or coordination capsules). The authors further arranged the chapters by ligand classes and types of encapsulated species (neutral molecules, anions, or cations). Readers will hence find an exhaustive reference resource and summary of the current state of research into encapsulated species, nowadays almost a separated realm of modern chemistry.

Molecular Self-Assembly

Molecular Self-Assembly
Author: Alex Li Dequan
Publisher: CRC Press
Total Pages: 464
Release: 2012-12-20
Genre: Science
ISBN: 9814364312

In the past several decades, molecular self-assembly has emerged as one of the main themes in chemistry, biology, and materials science. This book compiles and details cutting-edge research in molecular assemblies ranging from self-organized peptide nanostructures and DNA-chromophore foldamers to supramolecular systems and metal-directed assemblies

Handbook of Encapsulation and Controlled Release

Handbook of Encapsulation and Controlled Release
Author: Munmaya Mishra
Publisher: CRC Press
Total Pages: 1516
Release: 2015-12-01
Genre: Medical
ISBN: 1482232340

The field of encapsulation, especially microencapsulation, is a rapidly growing area of research and product development. The Handbook of Encapsulation and Controlled Release covers the entire field, presenting the fundamental processes involved and exploring how to use those processes for different applications in industry. Written at a level comp

Encapsulation and Controlled Release

Encapsulation and Controlled Release
Author: D R Karsa
Publisher: Elsevier
Total Pages: 187
Release: 1993-01-01
Genre: Technology & Engineering
ISBN: 1845698215

Encapsulation and controlled release combines basic information on the subject with details of the latest research, making it suitable for both newcomers to the field and those with experience of encapsulation technology. It will also be of great interest to those working on water-soluble or dispersible polymers, as well as application chemists and biochemists in diverse areas.

Hydrogen-bonded Capsules

Hydrogen-bonded Capsules
Author: Julius Rebek, Jr.
Publisher: World Scientific Publishing Company
Total Pages: 219
Release: 2015-09-23
Genre: Science
ISBN: 9789814678353

This monograph describes the behavior of molecules confined to small spaces. The small spaces are created by the self-assembly of modules into hollow capsular structures through hydrogen bonding; capsules assembled by metal/ligand binding or other forces are not included. Topics discussed include how assembly of capsules occurs, how molecules get in and out of the capsules, new spatial arrangements (stereochemistry) created in the capsules, and the altered shapes, interactions and reactivities of molecules held inside the small spaces. The descriptions emphasize molecular recognition phenomena and the perspective is that of physical organic chemistry.The book is the first monograph to treat reversible molecular encapsulation. More than 20 university and institute groups worldwide engage in this research, which represents the leading edge of activity in molecular recognition and the physical organic chemistry of confined molecules.

Molecular Encapsulation and the Selective Recognition of the Uranyl Ion

Molecular Encapsulation and the Selective Recognition of the Uranyl Ion
Author: Aaron Christopher Sather
Publisher:
Total Pages: 878
Release: 2013
Genre: Chemistry, Analytic
ISBN: 9781303457234

The study of noncovalent interactions and how molecules fit together--molecular recognition--is at the heart of this work. Synthetic "hosts" designed to surround their targets were constructed and their respective functions are described. The hosts presented here are extensions of the original self-folding deep cavitand and the self-assembled dimeric capsule. By modifying these systems, the controlled release of "guest" molecules and extended supramolecular systems were developed. Finally the lessons learned were successfully applied toward the synthesis of materials capable of the selective recognition, encapsulation, and sequestration of the uranyl dication from complex aqueous media, including seawater.

Encapsulation Nanotechnologies

Encapsulation Nanotechnologies
Author: Vikas Mittal
Publisher: John Wiley & Sons
Total Pages: 358
Release: 2013-05-28
Genre: Technology & Engineering
ISBN: 1118729048

This unique and comprehensive book covers all the recent physical, chemical, and mechanical advancements in encapsulation nanotechnologies. Encapsulation is prevalent in the evolutionary processes of nature, where nature protects the materials from the environment by engulfing them in a suitable shell. These natural processes are well known and have been adopted and applied in the pharmaceutical, food, agricultural, and cosmetics industries. In recent years, because of the increased understanding of the material properties and behaviors at nanoscale, research in the encapsulation field has also moved to the generation of nanocapsules, nanocontainers, and other nano devices. One such example is the generation of self-healing nanocontainers holding corrosion inhibitors that can be used in anti-corrosion coatings. The processes used to generate such capsules have also undergone significant developments. Various technologies based on chemical, physical, and physico-chemical synthesis methods have been developed and applied successfully to generate encapsulated materials. Because of the increasing potential and value of the new nanotechnologies and products being used in a large number of commercial processes, the need for compiling one comprehensive volume comprising the recent technological advancements is also correspondingly timely and significant. This volume not only introduces the subject of encapsulation and nanotechnologies to scientists new to the field, but also serves as a reference for experts already working in this area. Encapsulation Nanotechnologies details in part: The copper encapsulation of carbon nanotubes Various aspects of the application of fluid-bed technology for the coating and encapsulation processes The use of the electrospinning technique for encapsulation The concept of microencapsulation by interfacial polymerization Overviews of encapsulation technologies for organic thin-film transistors (OTFTs), polymer capsule technology, the use of supercritical fluids (such as carbon dioxide), iCVD process for large-scale applications in hybrid gas barriers Readership Encapsulation Nanotechnologiesis of prime interest to a wide range of materials scientists and engineers, both in industry and academia.