Download or read book Covalent and Non covalent Approaches to the Construction of Multi porphyrin Architectures written by Clint P. Woodward and published by . This book was released on 2007 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non Covalent Multi Porphyrin Assemblies written by Enzo Alessio and published by Structure and Bonding. This book was released on 2006-04-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Multiporphyrin Arrays written by Dongho Kim and published by CRC Press. This book was released on 2012-01-12 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the fundamentals and applications of multiporphyrin arrays ranging from basic spectroscopic features to a wide range of promising applications such as molecular wires, switches, sensors, artificial photosynthetic devices, and dye-sensitized solar cells based on a variety of multiporphyrin architectures using covalent and/or noncovalent molecular assemblies. Particularly, it focuses on energy and electron transfer processes occurring in multiporphyrin arrays in various environments such as single-molecule level, composite materials, LB films, and solid surface to provide better understanding of photofunctional molecular architectures.
Download or read book Construction of Porphyrin Supramolecules by Non covalent Interaction Using Diazolyl Units written by 忠作·池田 and published by . This book was released on 2000 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Strategies Towards Covalently Linked Multiporphyrin Arrays written by Amy Rachel Mulholland and published by . This book was released on 2012 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores new synthetic methodology for the construction of multiporphyrin arrays. The formation of new carbon-carbon bonds is a unifying theme in all of the syntheses presented as part of this work. Suzuki cross-coupling chemistry and olefin metathesis were explored in the context of synthetic porphyrin chemistry leading to large, multichromophoric systems. Subsequent analysis of the host-guest chemistry of these systems gave insight into cooperative processes and the association kinetics in supramolecular complexes held together by metal-ligand and [pi]-[pi] interactions. Initial work focused on template-directed strategies for the synthesis of cyclic porphyrin arrays. The unusually high affinity of fullerenes for porphyrins inspired the application of C60and C70 to the templated synthesis of two different types of cyclic porphyrin trimer. Olefinmetathesis was selected as the method of reversibly linking the porphyrinic monomers during synthesis, resulting in a product distribution that is largely under thermodynamic control. The fullerene is also believed to have a secondary, kinetic role in the stabilisation of a 3-porphyrintransition state prior to covalent linkage. Varying the solvent composition during the synthesis of the hexa-linked trimer showed that the product yield varied quadratically with the percentage of toluene in dichloromethane/toluene mixtures. This result illustrated the complex and synergistic relationship between solvation, desolvation and cooperative processes in a templated synthesis driven by [pi]-[pi] interactions. Solvent-related differences in the initiation rate of Grubbs' catalyst were also considered in light of this result. The second component of this thesis describes the design of an artificial light harvesting device based on a supramolecular cucurbit[7] uril-methyl viologen inclusion complex with porphyrin units appended to the periphery. Although the synthetic chemistry leading to a covalently-linked cucurbituril-porphyrin conjugate was unsuccessful, several broadly applicable porphyrinic building blocks were developed as part of this work. Recognition processes in multivalent metalloporphyrin hosts were studied using a binding motif based on a biphenyl-linked bisporphyrin. The synthesis of these porphyrin dimers and dyads proceeded via a stepwise approach in which sequential amide and Suzuki couplings gaverise to both homo- and heteroporphyrin dyads in reasonable yields and without the need for extensive purification. The complexation of the Zn(II)/Zn(II) dimer with 4,4'-dipyridyl, 1,2-bis(4-pyridyl)ethane and DABCO was examined, revealing that a 'cyclic' 1:1 complex forms initially and is eventually degraded to the 1:2 complex in the presence of excess ligand. The calculated microscopic binding constants were self-consistent with the Ka values derived from titration of this host with the monotopic ligands pyridine, 4-methylpyridine and quinuclidine. Secondly, the elaboration of this core binding motif with a derivative of C60 was achieved using similar synthetic methodology. Intended as a tunable system where the efficiency of photo induced electron transfer could be studied as a function of donor-acceptor orientation, the host-guest chemistry of this complex was also explored. The K1 values for the formation of a supramolecular tetrad with the bipyridyl ligands were 30-40% lower cf. the model zinc(II) dimer, reflecting competition from the C60 moiety. The binding stoichiometry of the bisporphyrin-C60 triad-DABCO complex was determined by a combined global non-linear regression analysis of UV-vis and fluorescence spectroscopic titration data, revealing the unusual self-assembly of a 2:2 complex.
Download or read book Porphyrin based Supramolecular Architectures written by Shengqian Ma and published by Royal Society of Chemistry. This book was released on 2021-12-03 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porphyrin-based Supramolecular Architectures focuses on the most recent developments in the field, emphasizing the cutting-edge research in a diverse range of applications. Designed for readers considering the unprecedented prosperity of porous materials research, chapters will cover both strategies for structure design (such as MOFs and COFs) as well as emerging applications including CO2 fixation, catalysis and photodynamic therapy. With contributions from global experts, this title will be of interest to graduate students and researchers in supramolecular chemistry, organic chemistry, inorganic chemistry, physical chemistry, organometallic chemistry, solid-state chemistry, catalysis and (porous) materials science.
Download or read book Synthetic Applications written by Rajender S. Varma and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-05-09 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic nanocatalysts are becoming an important tool for greener catalytic processes in chemical transformations in view of the ease of their removal from a reaction medium. This book explores assorted magnetic nanocatalysts, their deployment in synthesis, chemical transformation and their recovery and reuse. Various thematic topics embodied include magnetic nanocatalysts for S-S bond formation, N-heterocycle formation, C-heteroatom bond formation, silica-supported catalysts, multicomponent reactions, including their recyclability; another available volume emphasizes the utility of magnetic nanocatalysts in industrial appliances.
Download or read book Handbook Of Porphyrin Science With Applications To Chemistry Physics Materials Science Engineering Biology And Medicine Volumes 31 35 written by Karl M Kadish and published by World Scientific. This book was released on 2014-06-06 with total page 2301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the seventh set of Handbook of Porphyrin Science.Porphyrins, phthalocyanines and their numerous analogue and derivatives are materials of tremendous importance in chemistry, materials science, physics, biology and medicine. They are the red color in blood (heme) and the green in leaves (chlorophyll); they are also excellent ligands that can coordinate with almost every metal in the Periodic Table. Grounded in natural systems, porphyrins are incredibly versatile and can be modified in many ways; each new modification yields derivatives, demonstrating new chemistry, physics and biology, with a vast array of medicinal and technical applications.As porphyrins are currently employed as platforms for study of theoretical principles and applications in a wide variety of fields, the Handbook of Porphyrin Science represents a timely ongoing series dealing in detail with the synthesis, chemistry, physicochemical and medical properties and applications of polypyrrole macrocycles. Professors Karl Kadish, Kevin Smith and Roger Guilard are internationally recognized experts in the research field of porphyrins, each having his own separate area of expertise in the field. Between them, they have published over 1500 peer-reviewed papers and edited more than three dozen books on diverse topics of porphyrins and phthalocyanines. In assembling the new volumes of this unique handbook, they have selected and attracted the very best scientists in each sub-discipline as contributing authors.This handbook will prove to be a modern authoritative treatise on the subject as it is a collection of up-to-date works by world-renowned experts in the field. Complete with hundreds of figures, tables and structural formulas, and thousands of literature citations, all researchers and graduate students in this field will find the Handbook of Porphyrin Science an essential, major reference source for many years to come.
Download or read book Book of Abstracts written by and published by . This book was released on 2000 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Chemistry and Applications of Nanostructures written by Viktor Evgen?evich Borisenko and published by World Scientific. This book was released on 2011 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents invited reviews and original short notes of recent results obtained in studies concerning the fabrication and application of nanostructures, which hold great promise for the new generation of electronic and optoelectronic devices. Governing exciting and relatively new topics such as fast-progressing nanoelectronics and optoelectronics, molecular electronics and spintronics, nanophotonics, nanosensorics and nanobiology as well as nanotechnology and quantum processing of information, this book gives readers a more complete understanding of the practical uses of nanotechnology and nanostructures.
Download or read book Physics Chemistry And Applications Of Nanostructures Reviews And Short Notes Proceedings Of International Conference Nanomeeting 2011 written by Valerij S Gurin and published by World Scientific. This book was released on 2011-04-08 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents invited reviews and original short notes of recent results obtained in studies concerning the fabrication and application of nanostructures, which hold great promise for the new generation of electronic and optoelectronic devices.Governing exciting and relatively new topics such as fast-progressing nanoelectronics and optoelectronics, molecular electronics and spintronics, nanophotonics, nanosensorics and nanobiology as well as nanotechnology and quantum processing of information, this book gives readers a more complete understanding of the practical uses of nanotechnology and nanostructures.
Download or read book Photosynthetic Protein Based Photovoltaics written by Swee Ching Tan and published by CRC Press. This book was released on 2018-09-03 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever since the discovery of the photoelectric effect, researchers have been trying to improve the efficiency of converting sunlight into electricity through photovoltaic devices. Photosynthetic organisms provide clues for harvesting sunlight and storing the energy in chemical forms. This book offers a concise overview of the fundamental concepts of photosynthesis and the emerging photovoltaic technologies, casting light on the symbiotic relation between these spheres of science. Although there are many books about the fundamentals of photosynthesis and the various aspects of the photosynthetic processes, this is the first volume to focus on the prospects of studying the photosynthetic proteins, understanding and applying their properties to design prospective solar energy conversion devices that are sustainable and efficient. All in all, the book aims to bring together the present know-how on organic photovoltaics and dye-sensitized solar cells with that of the emerging bio-photovoltaics and the underlying physics of photosynthesis to foster a more eclectic research that would converge towards a sustainable energy technology for the future. The book mainly serves as a bridge to connect biochemists, who study photosynthetic proteins, and physicists and engineers who design and develop photovoltaic devices. Scientists, engineers and students in the fields of photosynthetic research and solar energy research can use this book as a ready reference. Key selling features: Covers both methods and bio-based materials needed to build bio-based photovoltaics Focuses on both techniques and applications Summarizes the advantages and limitations of various techniques Contributors from multiple disciplines integrate the knowledge of photosynthetic proteins and the physics/engineering of photovoltaic devices. Includes adaptive designs and techniques used in other types of solar cells to for the design of protein-based PVs
Download or read book Covalent Organic Frameworks written by Atsushi Nagai and published by CRC Press. This book was released on 2019-12-19 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rational synthesis of extended arrays of organic matter in bulk, solution, crystals, and thin films has always been a paramount goal of chemistry. The classical synthetic tools to obtain long-range regularity are, however, limited to noncovalent interactions, which usually yield structurally more random products. Hence, a combination of porosity and regularity in organic covalently bonded materials requires not only the design of molecular building blocks that allow for growth into a nonperturbed, regular geometry but also a condensation mechanism that progresses under reversible, thermodynamic, self-optimizing conditions. Covalent organic frameworks (COFs), a variety of 2D crystalline porous materials composed of light elements, resemble an sp2-carbon-based graphene sheet but have a different molecular skeleton formed by orderly linkage of building blocks to constitute a flat organic sheet. COFs have attracted considerable attention in the past decade because of their versatile applications in gas storage and separation, catalysis, sensing, drug delivery, and optoelectronic materials development. Compared to other porous materials, COFs allow for atomically precise control of their architectures by changing the structure of their building blocks, whereby the shapes and sizes of their pores can be well-tuned. Covalent Organic Frameworks is a compilation of different topics in COF research, from COF design and synthesis, crystallization, and structural linkages to the theory of gas sorption and various applications of COFs, such as heterogeneous catalysts, energy storage (e.g., semiconductors and batteries), and biomedicine. This handbook will appeal to anyone interested in nanotechnology and new materials of gas adsorption and storage, heterogeneous catalysts, electronic devices, and biomedical devices.
Download or read book Metal Organic Frameworks MOFs for Environmental Applications written by Sujit K. Ghosh and published by Elsevier. This book was released on 2019-06-07 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Frameworks for Environmental Applications examines this important topic, looking at potential materials and methods for the remediation of pressing pollution issues, such as heavy-metal contaminants in water streams, radioactive waste disposal, marine oil-spillage, the treatment of textile and dye industry effluents, the clean-up of trace amounts of explosives in land and water, and many other topics. This survey of the cutting-edge research and technology of MOFs is an invaluable resource for researchers working in inorganic chemistry and materials science, but it is also ideal for graduate students studying MOFs and their applications. Examines the applications of metal-organic frameworks for the remediation of environmental pollutants Features leading experts who research the applications of MOFs from around the world, including contributions from the United States, India and China Explores possible solutions to some of today’s most pressing environmental challenges, such as heavy-metal contamination in bodies of water, oil spills and clean-up of explosives hidden in land and water Provides an excellent reference for researchers and graduate students studying in the areas of inorganic chemistry, materials chemistry and environmental science
Download or read book Introduction to Reticular Chemistry written by Omar M. Yaghi and published by John Wiley & Sons. This book was released on 2019-03-22 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise introduction to the chemistry and design principles behind important metal-organic frameworks and related porous materials Reticular chemistry has been applied to synthesize new classes of porous materials that are successfully used for myraid applications in areas such as gas separation, catalysis, energy, and electronics. Introduction to Reticular Chemistry gives an unique overview of the principles of the chemistry behind metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and zeolitic imidazolate frameworks (ZIFs). Written by one of the pioneers in the field, this book covers all important aspects of reticular chemistry, including design and synthesis, properties and characterization, as well as current and future applications Designed to be an accessible resource, the book is written in an easy-to-understand style. It includes an extensive bibliography, and offers figures and videos of crystal structures that are available as an electronic supplement. Introduction to Reticular Chemistry: -Describes the underlying principles and design elements for the synthesis of important metal-organic frameworks (MOFs) and related materials -Discusses both real-life and future applications in various fields, such as clean energy and water adsorption -Offers all graphic material on a companion website -Provides first-hand knowledge by Omar Yaghi, one of the pioneers in the field, and his team. Aimed at graduate students in chemistry, structural chemists, inorganic chemists, organic chemists, catalytic chemists, and others, Introduction to Reticular Chemistry is a groundbreaking book that explores the chemistry principles and applications of MOFs, COFs, and ZIFs.
Download or read book Atomic and Nano Scale Materials for Advanced Energy Conversion 2 Volumes written by Zongyou Yin and published by John Wiley & Sons. This book was released on 2022-04-18 with total page 887 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atomic and Nano Scale Materials for Advanced Energy Conversion Discover the latest advancements in energy conversion technologies used to develop modern sustainable energy techniques In Atomic and Nano Scale Materials for Advanced Energy Conversion, expert interdisciplinary researcher Dr. Zongyou Yin delivers a comprehensive overview of nano-to-atomic scale materials science, the development of advanced electrochemical, photochemical, photoelectrochemical, and photovoltaic energy conversion strategies, and the applications for sustainable water splitting and other technologies. The book offers readers cutting-edge information of two-dimensional nano, mixed-dimensional nano, nano rare earth, clusters, and single atoms. It constructively evaluates emerging nano-to-atomic scale energy conversion technologies for academic research and development (R&D) researchers and industrial technique consultants and engineers. The author sets out a systematic analysis of recent energy-conversion science, covering topics like adaptable manufacturing of Van der Waals heterojunctions, mixed-dimensional junctions, tandem structures, and superlattices. He also discusses function-oriented engineering in polymorphic phases, photon absorption, excitons-charges conversion, non-noble plasmonics, and solid-liquid-gas interactions. Readers will also benefit from: A thorough introduction to emerging nanomaterials for energy conversion, including electrochemical, photochemical, photoelectrochemical, and photovoltaic energy conversion An exploration of clusters for energy conversion, including electrochemical, photochemical, and photoelectrochemical clusters Practical discussions of single atoms for energy conversion in electrochemical, photochemical, and photoelectrochemical energy conversion technologies A thorough analysis of future perspectives and directions in advanced energy conversion technology Perfect for materials scientists, photochemists, electrochemists, and inorganic chemists, Atomic and Nano Scale Materials for Advanced Energy Conversion is also a must-read resource for catalytic chemists interested in the intersection of advanced chemistry and physics in energy conversion technologies.
Download or read book Functionalization of Graphene written by Vasilios Georgakilas and published by John Wiley & Sons. This book was released on 2014-04-03 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: All set to become the standard reference on the topic, this book covers the most important procedures for chemical functionalization, making it an indispensable resource for all chemists, physicists, materials scientists and engineers entering or already working in the field. Expert authors share their knowledge on a wide range of different functional groups, including organic functional groups, hydrogen, halogen, nanoparticles and polymers.
