Spécialité: Chimie et Physicochimie des Polymères (original) (raw)
Related papers
Electrical properties of polymers
2005
Fully revised and expanded, this new edition of Anthony Blythe's successful title on electrical properties of polymers covers both the fundamental and recent developments in this growing area. The book provides a broad and comprehensive account of the topic, describing underlying physical principles and synthesis through to emerging technologies. The second edition places particular emphasis on the new generation of conductive polymers, describing emerging uses of polymers in industrial applications and covering topics such as light emitting diodes, flexible polymers and soft electronics.
APPLICATIONS OF ELECTRICALLY CONDUCTING POLYMERS AND COMPOSITES
Optics was certainly one of the first applications of hybrid materials. Thus, organic: inorganic/ organic: organic hybrid materials with high transparency are expected to be new optical materials such as optical fiber, wave-guide and optical lens. Materials with high refractive index, low density and good transparency in visible region are in demand as optical lenses especially for glasses. In order to implement optoelectronic or photonic properties into devices, the materials have to fulfill high optical quality demands and have to be stable over a long period. Furthermore, the control of the materials index as well as the thickness and therefore, the processibility of the materials are important. Due to its low optical losses (high optical quality), silica glass and composites made from it seem to be very useful for those devices. For example, photoconducting composites were prepared by the incorporation of cadmium sulfide particles in a polyvinylcarbazole matrix. The resulting materials allowed the tuning of the band gap of the particular wavelength of operation.
There are over 100 conducting polymers which have been synthesised by chemists with a wide range of specific electrical conductivities. Many of these polymers are suitable for electronic device fabrication. Semi-conducting and conducting polymers have potential for application in several areas. In this paper electronic and microwave properties are explored. Fabrication of electronic and microwave devices can be achieved with these special polymers which are not possible with say silicon or gallium arsenide. Wide area flexible electronic junctions can be fabricated. Polymers have low density, hence conductivity to weight ratio can be higher than metals. Optical transparency together with electrical conduction has been achieved.
Electrical and elastic properties of conductor-polymer composites
Journal of Materials Science - J MATER SCI, 1999
Several series of conductor-polymer composites were prepared from metal, graphite and conducting ceramics as filler materials, and epoxy, silicone rubber, polyethylene and polypropylene as polymer matrix. Their percolation curves, pressure dependence of resistivity, and Young's modulus were examined for applications such as a pressure sensor.
Conducting Polymers and their Applications
Current Physical Chemistrye, 2012
This review article focuses on conducting polymers and their applications. Conducting polymers (CPs) are an exciting new class of electronic materials, which have attracted an increasing interest since their discovery in 1977. They have many advantages, as compared to the non-conducting polymers, which is primarily due to their electronic and optic properties. Also, they have been used in artificial muscles, fabrication of electronic device, solar energy conversion, rechargeable batteries, and sensors. This study comprises two main parts of investigation. The first focuses conducting polymers (polythiophene, polyparaphenylene vinylene, polycarbazole, polyaniline, and polypyrrole). The second regards their applications, such as Supercapacitors, Light emitting diodes (LEDs), Solar cells, Field effect transistor (FET), and Biosensors. Both parts have been concluded and summarized with recent reviewed 233 references.
Conducting Polymers—Modern Semiconductors: A Theoretical Overview
In the present manuscript a brief discussion about the new generation of plastic or polymer also called materials of 21 st century, which could be conductive once it undergoes a structural modification process called doping has been presented. Also how theoretical methods utilizing quantum chemical calculations can be employed to study various properties of these new generation polymers and what informations can be drawn from them about their structural and electronic properties has been discussed.