Preparation And Optical Properties Of Electrospun Conjugated Polymer Polyethylene Oxide Nanofibers And Conjugated Polymer Nanoparticle Composites PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Preparation And Optical Properties Of Electrospun Conjugated Polymer Polyethylene Oxide Nanofibers And Conjugated Polymer Nanoparticle Composites PDF full book. Access full book title Preparation And Optical Properties Of Electrospun Conjugated Polymer Polyethylene Oxide Nanofibers And Conjugated Polymer Nanoparticle Composites.
Author | : Kezhen Yin |
Publisher | : |
Total Pages | : 154 |
Release | : 2010 |
Genre | : |
ISBN | : |
Download Preparation and Optical Properties of Electrospun Conjugated Polymer/polyethylene Oxide Nanofibers and Conjugated Polymer/nanoparticle Composites Book in PDF, ePub and Kindle
Conjugated polymer nanocomposites with unique optical and electronic properties have attracted great interest in both fundamental science and potential optoelectronic applications. This thesis includes three projects on preparation and optical studies of nanocomposites containing conjugated polymers. The first project focuses on the photoluminescence properties of conjugated polymers poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and poly(3-hexylthiophene) (P3HT) in dilute solutions, and in the composites of MEH-PPV/polyethylene oxide (PEO) and P3HT/PEO with thin films, random electrospun nanofibers and aligned electrospun nanofibers morphologies. In dilute solutions, the conjugated polymer chain aggregated with addition of poor solvent. In the solid states, polarized luminescence spectra of this films prepared by spin-coating, random and aligned nanofibers prepared by electrospinning were measured. The emission anisotrphies of aligned nanofibers were above 0.5 and increased with drcreasing concentration of conjugated polymer in nanofibers, whereas the emission anisotropies of random fibers and thin films were below 0.2. The results indicated that the alignmed electrospun nanofibers would have the macromolecular chains oriented preferably along the nanofiber axes, which led to strong polarized emission. In the second project, effects of surface modification on the fouorescence properties were conjugated polymer/zinc oxide nanocomposites were studied. The ZnO nanoparticles with surface capped by PVP were better dispersed in the nanocomposites and were more efficient to quench the emission of MEH-PPV by charge transfer process, compared with the non-capped ZnO. In the third project, the stable Pd/poly(3,4-ethylenedioxythioprene): poly(styrenesulfonate) (Pd/PEDOT:PSS) colloid was synthesized. With addition of PSS, the Pd/PEDOT:PSS aqueous dispersion was formed by simultaneous oxidation-reduction reaction between Pd(NO3)2 and ethylenedioxypthiphene(EDOT) at room temperature. The Pd/PEDOT:PSS thin film was tested as the Pd?PEDOT:PSS this fild was testes a NHE3 sensor.
Author | : Mahmood Aliofkhazraei |
Publisher | : CRC Press |
Total Pages | : 502 |
Release | : 2019-04-30 |
Genre | : Science |
ISBN | : 1482236648 |
Download Advances in Nanostructured Composites Book in PDF, ePub and Kindle
Composites and nanocomposites are used in cases where long durability and strength of components are required; i.e., where high stress levels, erosion processes and multiphase environments are present, including the parts under collision and impact, the parts under rotating motion and erosion (like excavation drills in oil and gas wells). The first volume of this book aims to provide a guide for fabrication of new nanocomposites mainly based on carbon nanotubes and graphene. The main topics of this volume are: Application of Nano-powders for Formation of Metal Matrix of Composites, Conjugated Polymer Nanocomposites, Biopolymer Nanocomposites, Dental Nanocomposites, Graphene-based Nanocomposites for Electrochemical Energy Storage, Polymer/Filler Composites for Optical Diffuse Reflectors, Synthesis and Applications of LDH-Based Nanocomposites, Rubber—CNT Nanocomposites, Nanocomposite Fibers with Carbon Nanotubes, Fabrications of Graphene Based Nanocomposites for Electrochemical Sensing of Drug Molecules, Recent Advances in Graphene Metal Oxide Based Nanocomposites.
Author | : 曾平 |
Publisher | : |
Total Pages | : 94 |
Release | : 2009 |
Genre | : |
ISBN | : |
Download Morphology and Optoelectronic Properties of Electrospun Nanofibers Prepared from Conjugated Polymer Blends Book in PDF, ePub and Kindle
Author | : 王正廷 |
Publisher | : |
Total Pages | : 79 |
Release | : 2008 |
Genre | : |
ISBN | : |
Download Morphology and Photophysical Properties of Electrospun Nanofibers Prepared from Conjugated Polymer Blends Book in PDF, ePub and Kindle
Author | : A. Sezai Sarac |
Publisher | : Pan Stanford |
Total Pages | : 0 |
Release | : 2015-07-30 |
Genre | : Science |
ISBN | : 9789814613514 |
Download Nanofibers of Conjugated Polymers Book in PDF, ePub and Kindle
Conjugated polymer composites with high dielectric constants are being developed by the electronics industry in response to the need for power-grounded decoupling to secure the integrity of high-speed signals and to reduce electromagnetic interference. Electrically conducting polymers are materials that simultaneously possess the physical and chemical properties of organic polymers and the electronic characteristics of metals. Multifunctional micro- and nanostructures of conjugated polymers, such as of pyrrole, have received great attention in recent years because they can polymerize easily and have high conductivity and good thermal stability. They, however, have some disadvantages such as brittleness and hard processability, which can be overcome by developing their nanocomposites. Nanofiber materials with different dielectric properties can be made from conjugated polymer composites and used in the electronics industry, in sensors and batteries, for electrical stimulation to enhance nerve-regeneration process, and for constructing scaffolds for nerve tissue engineering. Electrospinning is a versatile technique that is used to produce ultrathin continuous fibers with high surface-to-volume and aspect ratios from a variety of materials, including polymers, composites, and ceramics. Conductive materials in fibrillar shape may be advantageous compared with films because of their inherent properties such as anisotropy, high surface area, and mechanical strength. They are of particular interest in electroactive composites as they can be efficiently distributed in an insulating polymer matrix to improve both electrical and mechanical properties. Combination of electrical properties with good mechanical performance is of particular interest in electroactive polymer technology. This book covers the general aspects of electrospinning and discusses the fundamental concepts that can be used to produce nanofibers with the help of mathematical models and equations. It also details the methods through which different polymeric structures can be included in conjugated polymers during electrospinning to form composites or blends of conjugated polymer nanofibers.
Author | : Santosh Kumar Tiwari |
Publisher | : Springer Nature |
Total Pages | : 382 |
Release | : 2021-09-14 |
Genre | : Science |
ISBN | : 3030799794 |
Download Electrospun Nanofibers Book in PDF, ePub and Kindle
The book provides an up-to-date account of the various techniques of fabrication & functionalization of electrospun nanofibers as well as recent advancements. An overview of the advanced applications of such techniques in different areas is also presented. Both experimental and theoretical approaches related to electrospun nanofibers are covered along with a discussion on the inherent properties of electrospun nanofibers. Therefore, this book provides a unique resource not only to established researchers but also newcomers starting out in this field.
Author | : Arkadii Arinstein |
Publisher | : CRC Press |
Total Pages | : 209 |
Release | : 2017-10-03 |
Genre | : Science |
ISBN | : 9814745286 |
Download Electrospun Polymer Nanofibers Book in PDF, ePub and Kindle
Discussing the electrospinning process, the book covers in great depth the current research interest in nanoscience and nanotechnology, especially electrospinning of polymer nanofibers. The main distinction of the proposed book from others devoted to the electrospinning process is in the consideration of the problem in question from the physical point of view. Focusing on physical aspects, the book contains physical basics regarding the unique features of electrospun polymer nanofibers and the electrospinning resulting in fabrication of these nanofibers.
Author | : 郭霽慶 |
Publisher | : |
Total Pages | : 193 |
Release | : 2009 |
Genre | : |
ISBN | : |
Download Electrospun Conjugated Polymer Nanofibers Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 133 |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Research on the Electronic and Optical Properties of Polymer and Other Organic Molecular Thin Films Book in PDF, ePub and Kindle
The main goal of the work is to find materials and methods of optimization of organic layered electroluminescent cells and to study such properties of polymers and other organic materials that can be used in various opto-electronic devices. The summary of results obtained during the first year of work is presented. They are: (1) the possibility to produce electroluminescent cells using a vacuum deposition photoresist technology for commercial photoresists has been demonstrated; (2) the idea to replace the polyaryl polymers by other polymers with weaker hole conductivity for optimization of electroluminescent cells with ITO-Al electrodes has been suggested. The goal is to obtain amorphous processable thin films of radiative recombination layers in electroluminescent devices; (3) procedures of preparation of high-quality vacuum-deposited poly (p-phenylene) (PPP) films on various substrates have been developed; (4) it was found for the first time that the fluorescence intensity of PPP films depends on the degree of polymerization; (5) the role of interfaces between organic compounds, on one side, and metals or semiconductors, on the other side, has been studied and quenching of the fluorescence caused by semiconductor layer in thin sandwiches has been observed; (6) studies of the dynamics of photoexcitations revealed the exciton self-trapping in quasi-one-dimensional aggregates; and (7) conditions for preparation of highly crystalline fullerene C60 films by vacuum deposition have been found. Composites of C60 with conjugated polymers have been prepared.
Author | : Mehdi Afshari |
Publisher | : Woodhead Publishing |
Total Pages | : 650 |
Release | : 2016-09-13 |
Genre | : Technology & Engineering |
ISBN | : 0081009119 |
Download Electrospun Nanofibers Book in PDF, ePub and Kindle
Electrospun Nanofibers covers advances in the electrospinning process including characterization, testing and modeling of electrospun nanofibers, and electrospinning for particular fiber types and applications. Electrospun Nanofibers offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science. Electrospinning is the most commercially successful process for the production of nanofibers and rising demand is driving research and development in this field. Rapid progress is being made both in terms of the electrospinning process and in the production of nanofibers with superior chemical and physical properties. Electrospinning is becoming more efficient and more specialized in order to produce particular fiber types such as bicomponent and composite fibers, patterned and 3D nanofibers, carbon nanofibers and nanotubes, and nanofibers derived from chitosan. Provides systematic and comprehensive coverage of the manufacture, properties, and applications of nanofibers Covers recent developments in nanofibers materials including electrospinning of bicomponent, chitosan, carbon, and conductive fibers Brings together expertise from academia and industry to provide comprehensive, up-to-date information on nanofiber research and development Offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science