Download or read book Synthesis Photoluminescence Electrochemical and Electrochromic Properties of Aromatic Polymers Bearing Pendent Donor Or Acceptor Substituted Triphenylamine Groups written by 林宏益 and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Photoluminescence Electrochemical and Electrochromic Properties of Aromatic Polymers Bearing Pendent Donor Or Acceptor Substituted Triphenylamine Groups written by and published by . This book was released on 2008 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Electrochemical and Electrochromic Properties of Novel Aromatic Polymers Containing 4 methoxy substituted Triphenylamine Groups written by and published by . This book was released on 2008 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Electrochemical and Electrochromic Properties of Triphenylamine containing Novel Aromatic Polymers with Pendant Viologen Moieties written by 陳詩涵 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Electrochemical and Electrochromic Properties of Novel Aromatic Polymers Containing Multi arylamine Moiety written by 黃莉婷 and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Electrochromic and Photochromic Properties of Novel Aromatic Polymers from Benzaldehyde and Triphenylamine Derivatives written by and published by . This book was released on 2008 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and UV Vis NIR Electrochromism of Novel Aromatic Polymers Based on Tetraphenylbenzidine Unit Or Bearing Pendent Anthraquinone Groups written by 林昆瑩 and published by . This book was released on 2010 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Photoluminescence and Gas Permeable Properties of Functional Aromatic Polymers Containing Arylamine Moiety written by 王文昌 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Functional Polymeric Materials for Use in Organic Photovoltaics written by Sarah Joy Moench and published by . This book was released on 2016 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Norbornene-type monomers with pendant oligothiophene donor and perylene diimide acceptor groups were synthesized and polymerized using ring-opening metathesis polymerization (ROMP) to yield donor and acceptor homopolymers. These semiconducting homopolymers were characterized by UV-Vis and fluorescence spectroscopy to determine absorbance maxima, emission and excitation profiles, optical bandgaps, molar absorbtivities, and quantum yields. The electrochemical behavior of the donor and acceptor materials was characterized by cyclic voltammetry to determine the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the organic semiconductors. Donor-acceptor diblock copolymers were synthesized using ROMP. Fluorescence spectroscopy demonstrated increased donor emission quenching with decreasing block length. Random donor-acceptor copolymers demonstrated almost complete quenching of the donor emission, likely due to increased donor-acceptor interfaces for charge transfer. Electron paramagnetic resonance spectroscopy (EPR) confirmed the formation of persistent donor radical cations and acceptor radical anions in the block copolymers. Small-angle X-ray scattering (SAXS) demonstrated bulk microphase separation with domain sizes between 24-28 nm. Furthermore, the formation of crystalline structure within the ordered microdomains was also observed. All of these studies indicate that the designed materials may be useful as the active layer in organic photovoltaic applications. As a route to functional hybrid materials, block copolymers containing a donor-segment and a Lewis-basic oligoethylene glycol segment, for preferential ZnO nanoparticle growth, were synthesized by ROMP. Photophysical and electrochemical characterization demonstrated that the donor electronic properties were maintained upon incorporation into the copolymer. SAXS was used to demonstrate lamellar morphology in bulk films of the symmetric block copolymers. ZnO nanoparticles were synthesized and incorporated into composite thin films with the block copolymers. These composite films demonstrated high photoluminescence quenching, which increased upon thermal annealing, as a result of favorable charge transfer from the photo-excited donor to the ZnO nanoparticles. These studies demonstrate that improved morphology control and self-assembly can increase charge transfer in hybrid materials through increased interfacial area. As an alternative route to directed ZnO nanoparticle growth, a copolymer containing pendant dipicolylamine moieties was synthesized and characterized by photophysical and electrochemical methods.
Download or read book The Synthesis and Testing of Fast Switching Novel Conjugated Polymers for Electrochromic Applications written by Sandeep Kaur Shahi and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern technology is an essential aspect of our everyday lifestyle being vitally important to lighting, mobile phones, laptops, toys etc. The majority of these gadgets concentrate on visual electronic displays as a key selling feature. Hence, industry is in constant competition to excel while delivering new consumer demands of higher colouration efficiency, faster response times, inexpensive yet robust hardware, flexible displays and with the possibility of incorporating electronics into textiles. Traditionally, inorganic small molecules were extensively used for optical displays devices such as cathode ray tubes, liquid crystal displays, light emitting diiodes [sic] and plasma screens. However, in the past decade, significant progress in polymer electrochromism has shown many organic electroactive polymers to have the potential to satisfy the above consumer demands. Electrochromic materials (EC) have the ability to undergo a reversible colour transformation switch upon electrochemical doping, such as colour bleaching transformations. Herein, this thesis discusses how organic chemistry facilitates the advantage of structurally modifying monomeric heterocyclics to fine tune materials with interesting optical and physical properties. The polymeric form of an teraryl monomer containing a 1,4-dithiin-furan illustrated superior switching performances and electrochromic properties when compared to its parent poly 3,4-ethylene dioxythiophene (PEDOT). Poly(dithienylfuran) films displayed fast switching and reversible colour transformation at high colour contrast (CE = 212 cm2 C-1 cf. 183 cm2 C_1 for PEDOT at 95% optical switch). Formerly overlooked furan materials in organic electronics was revisted here, in which a polyfuran substituted at the 2,3-positions with an S-alkylated dithiin unit, was studied. The employment of the dithiin moiety provides intrinsic additional electroactivity, as well as a functional handle for substitution with alkyl groups, enhancing the processability of the polymer. The new polymer is compared with the closely related and well-established literature compounds PEDOT and PEDTT as well-studied, highly chalcogenated polythiophenes. The electrochromism phenomenon is not only of importance for visual optical displays but also has the potential for extended application in telecommunications with electromagnetic responses into the near infra-red (NIR) region. Herein, describe a series of symmetric and asymmetric chalcogenated azomethine monomers, robustly exherting electrochemical activity within the NIR.
Download or read book Synthesis and Electrochemical Properties of Novel Aromatic Polymers Investigated on Potential Inversion written by 林哲煌 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metallo Supramolecular Polymers written by Masayoshi Higuchi and published by Springer Nature. This book was released on 2019-11-12 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the synthesis, electrochemical and photochemical properties, and device applications of metallo-supramolecular polymers, new kinds of polymers synthesized by the complexation of metal ions and organic ditopic ligands. Their electrochemical and photochemical properties are also interesting and much different from conventional organic polymers. The properties come from the electronic intra-chain interaction between the metal ions and the ligands in the polymer chain. In this book, for example, the electrochromism that the Fe(II)-based metallo-supramolecular polymer exhibits is described: the blue color of the polymer film disappears by the electrochemical oxidation of Fe(II) ions to Fe(III) and the colorless film becomes blue again by the electrochemical reduction of Fe(III) to Fe(II). The electrochromism is explained by the disappearance/appearance of the metal-to-ligand charge transfer absorption. The electrochromic properties are applicable to display devices such as electronic paper and smart windows.
Download or read book Fullerene Polymers written by Nazario Martín and published by John Wiley & Sons. This book was released on 2009-08-14 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an outstanding team of experts in the interdisciplinary areas of research, this book is based on a new classification of the different types of fullerene polymers according to their chemical structures. It covers all aspects, from different classes, to their synthesis and applications in material science. Of great interest to polymer and synthetic chemists, but also for material scientists and industrial chemists.
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.
Download or read book High Performance Polymers and Engineering Plastics written by Vikas Mittal and published by John Wiley & Sons. This book was released on 2011-09-09 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes advances in synthesis, processing, and technology of environmentally friendly polymers generated from renewable resources. With contents based on a wide range of functional monomers and contributions from eminent researchers, this volume demonstrates the design, synthesis, properties and applications of plant oil based polymers, presenting an elaborate review of acid mediated polymerization techniques for the generation of green polymers. Chemical engineers are provided with state-of-the-art information that acts to further progress research in this direction.
Download or read book Intramolecular Charge Transfer written by Ramprasad Misra and published by John Wiley & Sons. This book was released on 2018-02-27 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between the multitude of advanced research articles and the knowledge newcomers to the field are looking for, this is a timely and comprehensive monograph covering the interdisciplinary topic of intramolecular charge transfer (ICT). The book not only covers the fundamentals and physico-chemical background of the ICT process, but also places a special emphasis on the latest experimental and theoretical studies that have been undertaken to understand this process and discusses key technological applications. After outlining the discovery of ICT molecules, the authors go on to discuss several important substance classes. They present the latest techniques for studying the underlying processes and show the interplay between charge transfer and the surrounding medium. Examples taken from nonlinear optics, viscosity and polarity sensors, and organic electronics testify to the vast range of applications. The result is a unique information source for experimentalists as well as theoreticians, from postgraduate students to researchers.
Download or read book Electronic and Optical Properties of Conjugated Polymers written by William Barford and published by International Monographs on Ph. This book was released on 2013-04-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conjugated polymers have important technological applications including solar cells and light emitting devices. They are active components in many important biological processes. This book describes and explains the electronic and optical properties of conjugated polymers by developing theoretical models to understand the key electronic states.
