Metallofoldamers
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Metallofoldamers
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Author : Galia Maayan
language : en
Publisher: John Wiley & Sons
Release Date : 2013-01-18
Metallofoldamers written by Galia Maayan and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-18 with Science categories.
Metallofoldamers are oligomers that fold into three-dimensional structures in a controlled manner upon coordination with metal ions. Molecules in this class have shown an impressive ability to form single-handed helical structures and other three-dimensional architectures. Several metallofoldamers have been applied as sensors due to their selective folding when binding to a specific metal ion, while others show promise for applications as responsive materials on the basis of their ability to fold and unfold upon changes in the oxidation state of the coordinated metal ion, and as novel catalysts. Metallofoldamers: From Helicates to Biomimetic Architectures describes the variety of interactions between oligomers and metal species, with a focus on non-natural synthetic molecules. Topics covered include: the major classes of foldamers and their folding driving force metalloproteins and metalloenzymes helicates: self-assembly, structure and applications abiotic metallo-DNA metallo-PNA and iDNA metallopeptides interactions of biomimetic oligomers with metal ions applications of metallofoldamers
Synthesis Of Two Dimensional Scaffolds And Metallofoldamers
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Author : Zhenzhen Dong
language : en
Publisher: ProQuest
Release Date : 2008
Synthesis Of Two Dimensional Scaffolds And Metallofoldamers written by Zhenzhen Dong and has been published by ProQuest this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Polyimides categories.
A strategy for creating two-dimensional, ordered arrays of linear, conjugated organic molecules on polyimide scaffolds is described. The design takes advantage of the enforcement of consecutive 90° twist angles along the polyimide backbone. Rod-shaped conjugated molecules are held parallel and in the same plane on the scaffolds, and have optical properties similar to those of monomeric analogues. As supporting evidence for the structure of the polymers, a series of model compounds were synthesized and characterized by x-ray crystallography. The polymeric materials are soluble in common organic solvents and have been characterized by 1 H NMR, 13 C NMR, MALDI-TOF, Gel Permeation Chromatography (GPC) and UV-vis spectroscopy. The average molecular weight was determined by end group analysis. Kinetic VT-NMR study of the model compound shows that single bond rotate through the polyimide backbone only at high temperature (>90°C). Because rotation is slow at room temperature, it is expected that these polymers will serve as excellent scaffolds for aligning second order non-linear optical materials, as NLO chromophores can be poled at high temperature, but will not realign at room temperature. Ni-salophen derived foldamers were designed, synthesized and studied. The absolute sense of helicity is effectively controlled via secondary sphere chirality, through which peripheral stereocenters control the asymmetric environment. Three-center hydrogen bonds and steric interactions were utilized to bias the absolute sense of helicity. The strong bias was supported by chiroptical data and low temperature NMR studies. The helical structure in solid state was confirmed by x-ray crystallography and the solution geometry was confirmed by a series of NMR spectroscopic studies. Chiral metal-salen complexes are widely employed as asymmetric catalysts and helicity has been proposed to play a role in asymmetric induction by metal salen catalysts. A tool for measuring the ability of chiral diamine to induce asymmetry in metal-salen complexes was developed. This was accomplished by juxtaposing competing elements of chirality within Ni(salen) complexes that are predisposed to fold. The chiral end group biases for the formation of the (M)-helix, whereas the diamine biases for the diastereomeric metallofoldamer of (P)-helicity. Spectroscopic and crystallographic studies of these complexes show that the trans -cyclohexanediamine is only a weak director of absolute helicity in Ni(salen) complexes. The bias of the diamine is completely overridden by the chiral end group. An implication of this study for asymmetric catalysis is that both helical diastereomers must be considered in any models that invoke helicity to explain asymmetric induction with chiral salens. To create metal salen-based foldamers that are appropriate for asymmetric catalysis, a small foldamer was designed and synthesized. The ends of this foldamer do not wrap. The complex retains the virtue of peripheral stereocenter control over catalyst helicity. A new steric interaction is created in the design to bias the absolute sense of helicity. The helical structure of the minimalist foldamer in solid state was confirmed by x-ray crystallography and the strong bias of absolute helicity in solution was determined by chiroptical data and low temperature NMR studies.
Comprehensive Supramolecular Chemistry Ii
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Author : George W. Gokel
language : en
Publisher: Elsevier
Release Date : 2017-06-22
Comprehensive Supramolecular Chemistry Ii written by George W. Gokel and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-22 with Science categories.
Comprehensive Supramolecular Chemistry II, Second Edition, Nine Volume Set is a ‘one-stop shop’ that covers supramolecular chemistry, a field that originated from the work of researchers in organic, inorganic and physical chemistry, with some biological influence. The original edition was structured to reflect, in part, the origin of the field. However, in the past two decades, the field has changed a great deal as reflected in this new work that covers the general principles of supramolecular chemistry and molecular recognition, experimental and computational methods in supramolecular chemistry, supramolecular receptors, dynamic supramolecular chemistry, supramolecular engineering, crystallographic (engineered) assemblies, sensors, imaging agents, devices and the latest in nanotechnology. Each section begins with an introduction by an expert in the field, who offers an initial perspective on the development of the field. Each article begins with outlining basic concepts before moving on to more advanced material. Contains content that begins with the basics before moving on to more complex concepts, making it suitable for advanced undergraduates as well as academic researchers Focuses on application of the theory in practice, with particular focus on areas that have gained increasing importance in the 21st century, including nanomedicine, nanotechnology and medicinal chemistry Fully rewritten to make a completely up-to-date reference work that covers all the major advances that have taken place since the First Edition published in 1996
Chirality In Supramolecular Assemblies
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Author : F. Richard Keene
language : en
Publisher: John Wiley & Sons
Release Date : 2017-01-03
Chirality In Supramolecular Assemblies written by F. Richard Keene and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-03 with Science categories.
Supramolecular chemistry deals with the organisation of molecules into defined assemblies using non-covalent interactions, including weaker and reversible interactions such as hydrogen bonds, and metal-ligand interactions. The aspect of stereochemistry within such chemical architectures, and in particular chirality, is of special interest as it impacts on considerations of molecular recognition, the development of functional materials, the vexed question of homochirality, nanoscale effects of interactions at interfaces, biocatalysis and enzymatic catalysis, and applications in organic synthesis. Chirality in Supramolecular Assemblies addresses many of these aspects, presenting a broad overview of this important and rapidly developing interdisciplinary field. Topics covered include: Origins of molecular and topological chirality Homochirogenesis Chirality in crystallinity Host-guest behavior Chiral influences in functional materials Chirality in network solids and coordination solids Aspects of chirality at interfaces Chirality in organic assemblies Chirality related to biocatalysis and enzymes in organic synthesis. This book is a valuable reference for researchers in the molecular sciences, materials science and biological science working with chiral supramolecular systems. It provides summaries and special insights by acknowledged international experts in the various fields.
Middle Molecular Strategy
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Author : Koichi Fukase
language : en
Publisher: Springer Nature
Release Date : 2021-07-13
Middle Molecular Strategy written by Koichi Fukase and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-13 with Science categories.
This book highlights recently discovered aspects of “middle-size molecules,” focusing on (1) their unique bio-functions on the basis of derivatives and conjugates of natural products, saccharides, peptides, and nucleotides; (2) the synthesis of structurally complex natural products; (3) special synthetic methods for π-conjugated functional molecules; and (4) novel synthetic methods using flow chemistry. Given its scope, the book is of interest to industrial researchers and graduate students in the fields of organic chemistry, medicinal chemistry, and materials science.
Biomimicry For Materials Design And Habitats
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Author : Marjan Eggermont
language : en
Publisher: Elsevier
Release Date : 2022-02-21
Biomimicry For Materials Design And Habitats written by Marjan Eggermont and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-21 with Technology & Engineering categories.
Biomimicry for Materials, Design and Habitats: Innovations and Applications and is a survey of the recent work of recognized experts in a variety of fields who employ biomimicry and related paradigms to solve key problems of interest within design, science, technology, and society. Topics covered include innovations from biomimicry in materials, product design, architecture, and biological sciences. The book is a useful resource for educators, designers, researchers, engineers, and materials scientists, taking them from the theory behind biomimicry to real world applications. Living systems have evolved innovative solutions to challenges that humans face on a daily basis. Nonlinear multifunctional systems that have a symbiotic relationship with their environment are the domain of nature. Morphological solutions for buildings inspired by nature can be used for skins, surfaces, and structures to facilitate environmental adaptation of buildings to increase occupant comfort and reduce energy demands. Birds can teach us to produce novel structures, 3D printing can be informed by oysters and mussels, and mycelium may show us the way to fabricate new biocomposites in architecture. Therefore, it is in nature that we seek inspiration for the solutions to tomorrow’s challenges. Presents new directions in education and the various applications of biomimicry within industry, including bio-inspired entrepreneurship Discusses the role of biomimicry in education, innovation, and product design Covers applications in systems engineering and design, novel materials with applications in 3D printing, and bio-inspired architecture Includes perspectives on sustainability detailing the role that bio-inspiration or biomimicry plays in sustainability
Synergy In Supramolecular Chemistry
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Author : Tatsuya Nabeshima
language : en
Publisher: CRC Press
Release Date : 2014-12-18
Synergy In Supramolecular Chemistry written by Tatsuya Nabeshima and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-12-18 with Science categories.
Cooperative and synergistic chemical events have attracted significant attention from many researchers engaged in organic chemistry, inorganic chemistry, biological chemistry, polymer chemistry, medicinal chemistry, and other related materials sciences. Synergistic supramolecular systems could be developed to amplify the functions and integration o
Bioorganometallic Chemistry
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Author : Gérard Jaouen
language : en
Publisher: John Wiley & Sons
Release Date : 2015-04-20
Bioorganometallic Chemistry written by Gérard Jaouen and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-04-20 with Science categories.
An up-to-date reference reflecting the significant advances and important breakthroughs made in this emerging discipline over the last decade. As such, the book provides an overview of the latest developments and future trends in the field, focusing on such applications as the development of potentially active organometallic drugs against incurable diseases, as well as in such areas as catalysis, energy, analytical chemistry, and imaging. The renowned editor, who established the term "bioorganometallics", and his international team of experts have put together a valuable resource for researchers in organometallic, inorganic, medicinal, and biochemistry.
Advances In Physical Organic Chemistry
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Author :
language : en
Publisher: Academic Press
Release Date : 2021-11-22
Advances In Physical Organic Chemistry written by and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-22 with Science categories.
Advances in Physical Organic Chemistry, Volume 55, presents the latest reviews of recent work in physical organic chemistry. The book provides a valuable source of information that is ideal not only for physical organic chemists applying their expertise to both novel and traditional problems, but also for non-specialists across diverse areas who identify a physical organic component in their approach to research. The book's hallmark is its quantitative, molecular level understanding of phenomena across a diverse range of disciplines. Reviews the application of quantitative and mathematical methods to help readers understand chemical problems Provides the chemical community with authoritative and critical assessments of the many aspects of physical organic chemistry Covers organic, organometallic, bioorganic, enzymes and materials topics Presents the only regularly published resource for reviews in physical organic chemistry Written by authoritative experts who cover a wide range of topics that require a quantitative, molecular-level understanding of phenomena across a diverse range of disciplines
Metalloprotein Active Site Assembly
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Author : Michael K. Johnson
language : en
Publisher: John Wiley & Sons
Release Date : 2017-08-14
Metalloprotein Active Site Assembly written by Michael K. Johnson and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-14 with Science categories.
Summarizes the essential biosynthetic pathways for assembly of metal cofactor sites in functional metalloproteins Metalloprotein Active Site Assembly focuses on the processes that have evolved to orchestrate the assembly of metal cofactor sites in functional metalloproteins. It goes beyond the simple incorporation of single metal ions in a protein framework, and includes metal cluster assembly, metal-cofactor biosynthesis and insertion, and metal-based post-translational modifications of the protein environments that are necessary for function. Several examples of each of these areas have now been identified and studied; the current volume provides the current state-of-the-art understanding of the processes involved. An excellent companion to the earlier book in this series Metals in Cells—which discussed both the positive and negative effects of cellular interactions with metals—this comprehensive book provides a diverse sampling of what is known about metalloprotein active site assembly processes. It covers all major biological transition metal components (Mn, Fe, Co, Ni, Mo), as well as the other inorganic components, metal-binding organic cofactors (e.g., heme, siroheme, cobalamin, molybdopterin), and post-translationally modified metal binding sites that make up the patchwork of evolved biological catalytic sites. The book compares and contrasts the biosynthetic assembly of active sites involving all biological metals. This has never been done before since it is a relatively new, fast-developing area of research. Metalloprotein Active Site Assembly is an ideal text for practitioners of inorganic biochemistry who are studying the biosynthetic pathways and gene clusters involved in active site assembly, and for inorganic chemists who want to apply the concepts learned to potential synthetic pathways to active site mimics.