Download or read book Synthesis and Characterization of Polymers with Alkyl Main Chain Pendent Carbazole Arylsilane modified Carbazole Or Triphenylamine Unit as Host for Polymer Light Emitting Diodes written by 莊清男 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 Polyimides and Other High Temperature Polymers Synthesis Characterization and Applications Volume 5 written by Kash L. Mittal and published by CRC Press. This book was released on 2009-04-24 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the "Second International Symposium on Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, held in Newark, New Jersey, December 3-6, 2001. Polyimides possess many desirable attributes, so this class of materials has found applications in many technologies ranging fro

Download or read book Polyimides and Other High Temperature Polymers Synthesis Characterization and Applications volume 2 written by Kash L. Mittal and published by CRC Press. This book was released on 2003-03-01 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the Second International Symposium on Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, held in Newark, New Jersey, December 3-6, 2001. Polyimides possess many desirable attributes, so this class of materials has found applications in many technologies ranging from

Download or read book Synthesis and Characterisation of 9H Carbazole Main Chain Conjugated Polymers written by Isao Wataru and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterisation of Novel Carbazole Based Conjugated Polymers for Applications in Light Emitting Devices written by David F. Pickup and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Organoboron Functionalized Conjugated Polymers written by Haiyan Li and published by . This book was released on 2010 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thiophene- and fluorene-based polymers represent two important classes of semiconducting materials and their applications in organic light emitting devices, photovoltaics, organic field-effect transistors and chemical sensors have been extensively investigated. Electron-deficient organoboranes provide interesting characteristics including their ability to act as efficient emitters and charge transport materials in optoelectronic devices and as sensory element for nucleophiles. It is desirable to bring together these two classes of building blocks within one system to form a variety of materials with advantageous properties. We have explored two alternative design principles: (i) the embedding of boron into the conjugated polymer main chain and (ii) the direct attachment of boron as a side group to the conjugated polymer backbone. Three different projects were pursued in this general area: 1. The reactive polymer scaffold poly(fluorenylene(bromo)borane) (PFBBr) with alternating fluorene and borane moieties was prepared via B-Sn exchange reaction. Starting from PFBBr as a universal precursor, we obtained a series of polymers for which we can tune the stability, thermal characteristics, and fluorescence behavior by simple post-polymerization modification reactions. By using the same synthetic strategy, we have also prepared a main chain donor-acceptor type polymer based on a combination of fluorene and triphenylamine. As expected for an ambipolar system, this polymer exhibits a remarkable solvatochromic effect in the emission and can be oxidized and reduced electrochemically at moderate potentials. 2. In an alternative approach, a series of polythiophenes with diarylboryl functional groups attached at the lateral positions have been developed in our group by Anand Sundararaman via a post-polymerization borylation route. The electrical and structural properties of the polymer and the chemical stability can be further tuned by variation of the aryl groups on boron, for which the redox active ferrocenyl and sterically bulky Mes or Tip groups were introduced. To further investigate how the main chain chemical structure influences the optoelectronic properties of this type of polymers, we have prepared a class of bis(dimesitylboryl)bithiophene-based alternating copolymers, involving different aromatic systems such as fluorene, carbazole and triphenylamine derivatives. 3. Organoboron quinolate chelates are promising as light emitting materials because of their high thermal stability and efficient luminescence. We have prepared two new polymers with both the quinolate ligands and boron centers embedded in the main chain. The polymers were obtained by a simple one-step procedure that involves metal-free boron-induced ether cleavage reactions. All the polymers have been characterized by multinuclear NMR spectroscopy, gel permeation chromatography (GPC) and their thermal behavior has been studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Their photophysical and electrochemical properties and electronic structures have been investigated by UV-vis absorption and fluorescence spectroscopy, cyclic voltammetry and theoretical calculations for the respective model systems. The tri-coordinate organoboron compounds that were prepared are promising sensory materials and their response towards different anions has been evaluated by UV-vis absorption and fluorescence spectroscopy.

Download or read book Polymers Synthesis and Characterization written by Edina Rusen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer science represents a domain of great interest due to the possible applications of polymers in areas that range from the most common to those that are high-tech. To achieve this, synthesis and characterization techniques, as well as the correlation of the chemical structure and morphology with their properties, is critical. From the perspective of synthesis, there are two strategies for obtaining polymers: step-growth (polyaddition, polycondensation, and reversible-deactivation radical polymerization) and chain polymerization (radical polymerization, coordinative polymerization, and cationic and anionic polymerization).The advancement of polymer applications continues to lead to the expansion of the synthesis and characterization techniques that can be facilitated by novel, smart, multifunctional polymers. There is a correlation between structure, composition, morphology, and properties of applications that leads to substantial benefits for specific applications.This Special Issue will establish a collection of articles and reviews that follow the latest developments in polymer synthesis, their characterization techniques, and the correlation between structure and properties.