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Design And Synthesis Of New Nonlinear Optical Chromophores Incorporating Diphenylphosphino Groups And Their Incorporation Into Electroactive Dendrimers
Download Design And Synthesis Of New Nonlinear Optical Chromophores Incorporating Diphenylphosphino Groups And Their Incorporation Into Electroactive Dendrimers full books in PDF, epub, and Kindle. Read online Design And Synthesis Of New Nonlinear Optical Chromophores Incorporating Diphenylphosphino Groups And Their Incorporation Into Electroactive Dendrimers ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Design and Synthesis of New Nonlinear Optical Chromophores Incorporating Diphenylphosphino Groups and Their Incorporation Into Electroactive Dendrimers by : Luis Gustavo Madrigal
Download or read book Design and Synthesis of New Nonlinear Optical Chromophores Incorporating Diphenylphosphino Groups and Their Incorporation Into Electroactive Dendrimers written by Luis Gustavo Madrigal and published by . This book was released on 2000 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Design and Synthesis of High Temperature Chromophores for Use in Nonlinear Optics and Their Incorporation Into High Thermal Stability Polyimides by : Mark Hayes Davey
Download or read book The Design and Synthesis of High Temperature Chromophores for Use in Nonlinear Optics and Their Incorporation Into High Thermal Stability Polyimides written by Mark Hayes Davey and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A general, convergent approach to the synthesis of a series of stilbene- (via Heck coupling) and azo- (via Mills coupling) based donor-acceptor, second-order nonlinear optical (NLO) chromophores is reported. The synthetic strategy allows the preparation of both acid- and base-reactive structures, yielding diamine functionalized chromophores for incorporation into polyimide backbones. Also presented is a simple method for the oxidation of electron-deficient phenyl hydroxylamines to the corresponding nitroso compounds in homogeneous media using tert-butyl hypochlorite. This oxidative procedure provides the aromatic nitroso compounds in high yields, even with substrates that produce the corresponding azoxy derivatives as byproducts under standard heterogeneous oxidation conditions.
Book Synopsis Design and Synthesis of Dendrimers for Studying Two-photon Absorption Characteristics by : Michael Keith Sims
Download or read book Design and Synthesis of Dendrimers for Studying Two-photon Absorption Characteristics written by Michael Keith Sims and published by . This book was released on 2007 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chromophores incorporated in these dendrimers are capable of providing laser protection by two-photon and reverse saturable absorption from highly absorbing excited states. The excited state absorption can be modeled by SbCl5 oxidative doping, forming stable bipolaronic dications in solution. Convergent approach to dendrimer synthesis was utilized in the preparation of the compounds constructed. In order to obtain absorption characteristics for these compounds, an initial doping with SbCl5 was mandatory. The formation of a bipolaron dication in solution resulted in large absorbances between 400 nm and 800 nm. Studies of optical limiting capabilities by way of two-photon absorption are currently underway, based on the generation of similar photogenerated bipolaronic states.
Book Synopsis Synthesis of New Nonlinear Optical Chromophores and Photorefractive Polyurethanes and Polyimides by : Suresh R. Sriram
Download or read book Synthesis of New Nonlinear Optical Chromophores and Photorefractive Polyurethanes and Polyimides written by Suresh R. Sriram and published by . This book was released on 1997 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports the synthesis of fully functionalized polyurethane and polyimide-based polymers having charge transport units and nonlinear optical chromophores available in each repeat unit of the polymer. These polymers, when doped with charge generators, should exhibit photorefractive behavior.
Book Synopsis Design and Synthesis of Functionalizable ProDOT Based Chromophores for Use in Electro-optics by : Jessica Schendel Sinness
Download or read book Design and Synthesis of Functionalizable ProDOT Based Chromophores for Use in Electro-optics written by Jessica Schendel Sinness and published by . This book was released on 2006 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design, Synthesis and Characterization of Novel Second-order Nonlinear Optical Chromophores with Fused-ring Polyenes for Application in Polymeric Electro-optic Modulators by : Galina Todorova
Download or read book Design, Synthesis and Characterization of Novel Second-order Nonlinear Optical Chromophores with Fused-ring Polyenes for Application in Polymeric Electro-optic Modulators written by Galina Todorova and published by . This book was released on 2000 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of New Multi-Functional Electroactive Polymers with Emphasis on Optical Nonlinearity by :
Download or read book Design of New Multi-Functional Electroactive Polymers with Emphasis on Optical Nonlinearity written by and published by . This book was released on 1994 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesis and processing of organic second-order nonlinear optical materials for fabrication of electro-optic modulators are discussed. Topics dealt with in order include (1) synthesis for chromophores characterized by large hyperpolarizability and good thermal stability, (2) covalent coupling of nonlinear optical chromophores to polymer lattices, (3) lattice hardening reactions which permit locking-in of electric field poling-induced macroscopic noncentrosymmetric order, (4) fabrication of buried channel nonlinear optical waveguides by photochemical and reactive ion etching techniques, (5) coupling of nonlinear optical waveguides to fiber optic transmission lines and drive electronics, (6) prototype device fabrication and evaluation. Various device configurations are reviewed and recent advances in applications are discussed. Comparison is made between the performance of organic and inorganic materials for electro-optic modulation applications.
Book Synopsis Silicon-Containing Dendritic Polymers by : Petar R. Dvornic
Download or read book Silicon-Containing Dendritic Polymers written by Petar R. Dvornic and published by Springer Science & Business Media. This book was released on 2009-01-09 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades silicon-containing dendritic polymers have become one of the fastest growing areas of development in polymer science. The eruption of interest in these new polymers stems from their unprecedented molecular architecture, unique resulting properties and the realization that they represent ideal building blocks for chemical nanotechnology. This is the first book to solely focus on silicon-containing dendritic polymers. The contributions of those experts who originally introduced each field or played a major role in its progress are reported. The developments in all major areas of this field are presented from their origins to the present. It is anticipated that this text will become an invaluable guide and vanguard of reference for experienced scientists interested in the fields of polymer and material science, synthetic chemistry, and nanotechnology. It will also serve advanced graduate students either as a source of creative inspiration or as a textbook for appropriate courses.
Book Synopsis Synthesis of New Conjugated Meso Porphyrin Dendrimers and Oligomers and Study of Their Optical Properties by : Dandan Yao
Download or read book Synthesis of New Conjugated Meso Porphyrin Dendrimers and Oligomers and Study of Their Optical Properties written by Dandan Yao and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this thesis, we have worked on the synthesis and characterization of new compounds using the porphyrin macrocycle as a starting material. The aim, after synthesis, was to study the photophysical properties of these new molecules. More precisely, we have synthesized and characterized three groups of fluorenyl-porphyrin dendrimers and two oligomers in conjugated structures. Their correlation on optical property-structure have been discussed in detail, as well as the energy transfer processes from the conjugated dendron donor to porphyrin acceptor. In the first chapter, we introduce the general background of the porphyrin chemistry based on three aspects: (i) structure, (ii) optical properties and (iii) synthetic methods. We further review prior porphyrin studies done in our group and propose new molecular designs based on these results. In the second chapter, we study the influence of substitution position and nature of the antennae on the central core. Two groups of new TPP-cored porphyrin dendrimers were synthesized according to different substituted positions on the peripheral phenyl rings: para-substituted series TPP1, TPP2 and TPP3, and meta-substituted ones TPP4, TPP5 and TPP6. All have conjugated dendrons with bridged phenyl-alkynyl and are terminated by fluorenyl groups. In the third chapter, we study the influence of positions of light absorbers. To this aim, a series of TFP-cored porphyrin dendrimers presenting fluorenyls in conjugated dendrons on different positions is reported (core fluorenyl, bridging fluorenyl and terminal fluorenyl): TFP1, TFP2 and TFP3. The core fluorenyl mainly influences emission peaks and quantum yield, while the bridging fluorenyl and terminal fluorenyl have a large effect on the dendron absorption and on the energy transfer efficiency. Thus, for the largest dendrimer TFP3, dendron emission is not totally quenched by long distance energy transfer process when exciting the peripheral dendrons. In the fourth chapter, we study the influence of linkages in the Dendron. Thus, two new porphyrin dendrimers with bridged vinyl, TPP-D and TFP-D, were synthesized and compared to analogues with alkynyl bridged TPP-T and TFP-T. Vinyl and alkynyl bridges are shown to influence the optical properties of the porphyrin dendrimers to a certain extent depending on the substituted positions. Finally, in the last chapter, two oligomers with n-butyl substituted TFP as terminal group, a linear dimer and a star - shaped trimer, were synthesized from the same porphyrin monomer.
Book Synopsis Chromophores with Nonlinear Optical Properties and Their Applications by : Maria Marinescu
Download or read book Chromophores with Nonlinear Optical Properties and Their Applications written by Maria Marinescu and published by . This book was released on 2023-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a useful tool for academia and researchers interested in the chemistry and applications of organic chromophores with nonlinear optical properties (NLO). This book aims to review the various types of organic chromophores reported in literature with NLO properties, such as alkynes, tetraenes, azo dyes, chalcones, heterocyclic compounds, fullerenes, perylenes, ferrocenes and polymers, their structural features, properties and their nonlinear optics. parameters. 380 chromophores with NLO properties are presented in this book. The various applications of organic NLO chromophores, in medicine as luminescent materials, molecular switches, laser technology, spectroscopic and electrochemical sensors, microfabrication and imaging, data storage, optical signal modulation, telecommunications, make this field highly sought after and explored by researchers in the last decade.
Book Synopsis Design, Synthesis and Characterization of Novel Nonlinear Optical Polymers by :
Download or read book Design, Synthesis and Characterization of Novel Nonlinear Optical Polymers written by and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal focus of the project is to develop new materials chemistry based on molecular level design and solid state chemistry. The goals have been to develop electroactive polymers with novel electronic, optical and nonlinear optical properties. Second and third order nonlinear optical materials have been developed based on conjugated macromolecules and asymmetric anharmonic molecular electronic dipolar oscillators. In this multidisciplinary research effort, starting from first principle, bulk self assembly processing techniques needed to control the molecular and supermolecular organizations of optical and electroactive molecules have been developed. They include spontaneous molecular organization of nonlinear optically active conjugated polymers such as polydiacetylenes with conjugating and hydrogen bonding side groups. A series of new soluble PDAs of the same class with further functionalization, elaborating on the already defined design principle have been developed. (MM).
Book Synopsis Design, Synthesis and Study of Dendrimers as Nanoscaffolds for Solar Energy Harvest by :
Download or read book Design, Synthesis and Study of Dendrimers as Nanoscaffolds for Solar Energy Harvest written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing molecules in which the vectorial motions of charges can be controlled has been of significant research interest in the recent past. Covalent linear arrays of chromophores or other molecular assemblies such as liquid crystals, zeolites, polymers, peptides, and amphiphiles have all been used as components for this purpose. Significant amount of this effort also involved the use of dendrimers as the molecular architecture. The structural feature in which multiple functionalities are present in the periphery that decreases gradually as one moves towards the core renders dendrimers obvious candidates for light harvesting antenna. Most of the efforts reported in the literature are directed towards energy funneling from a chromophore in the periphery to another chromophore at the core of the dendrimer. There are relatively few reports that utilize the dendritic architecture for photoinduced charge separation, an important step in designing materials for photovoltaics. These reports focus mostly on conjugated molecular backbones. Since non-conjugated dendrimer backbones provide the possibility of independently tuning the electronic characteristics of the chromophore and the charge transfer unit and therefore carry out a systematic structure-property relationship study, we have designed and synthesized dendrimers.
Book Synopsis Design and Synthesis of Conjugated Polymers by : Mario Leclerc
Download or read book Design and Synthesis of Conjugated Polymers written by Mario Leclerc and published by John Wiley & Sons. This book was released on 2010-06-24 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first systematic compilation of synthesis methods for different classes of polymers describes well-tested and reproducible procedures, thus saving time, money and chemicals. Each chapter presents the latest method for a specific class of conjugated polymers with a particular emphasis on the design aspects for organo-electronic applications. In this concise and practically oriented manner, readers are introduced to the strategies of influencing and controlling the polymer properties with respect to their use in the desired device. This style of presentation quickly helps researchers in their daily lab work and prevents them from reinventing the wheel over and over again.
Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Book Synopsis Dendritic Molecules by : George R. Newkome
Download or read book Dendritic Molecules written by George R. Newkome and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book on dendrimers! The authors, pioneers in this scientific field, describe basic principles and current developments in the rapidly evolving field of dendrimer research. All aspects of the subject are covered: the authors provide a historical overview, theoretical background, and discussions of the synthesis and applications of dendrimers. The book thus spans organic chemistry and more application-orientated disciplines like material science and pharmaceutical chemistry. The excellent, detailed list of references further increases the value of the book. The optimal presentation of the structural formulas of dendrimers - highly symmetrical giant molecules - helps the reader understand the sophisticated synthesis quickly. This book will set the standard for further monographs on this subject.
Book Synopsis The Stille Reaction by : Vittorio Farina
Download or read book The Stille Reaction written by Vittorio Farina and published by John Wiley & Sons. This book was released on 1998-09-18 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die Stille-Reaktion ist eine der sehr wenigen Reaktionen, in denen unter milden Bedingungen Kohlenstoff-Kohlenstoff-Bindungen geknüpft werden können. Man verwendet die Reaktion häufig in der Synthese komplizierter Moleküle zur Verknüpfung größerer Molekülbausteine. Die Autoren diskutieren vom präparativen Standpunkt aus Grenzen, Einflüsse, strukturelle Effekte und die Wahl der geeigneten Reaktionsbedingungen. Mit ausführlichen Vorschriften und vielen Beispielen. (11/98)
