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Semiconducting and Metallic Polymers

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Release : 2010-07-29
Genre : Science
Kind : eBook
Book Rating : 647/5 ( reviews)

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Book Synopsis Semiconducting and Metallic Polymers by : Alan J. Heeger

Download or read book Semiconducting and Metallic Polymers written by Alan J. Heeger. This book was released on 2010-07-29. Available in PDF, EPUB and Kindle. Book excerpt: The unique properties of conducting and semiconducting (conjugated) polymers make them one of the most attractive areas of interdisciplinary materials science and technology. Written by a pioneer in the field, this book is the first aimed at teaching graduate students, postdoctoral scientists, and specialists in industry about this exciting field.

Conjugated Conducting Polymers

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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 296/5 ( reviews)

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Book Synopsis Conjugated Conducting Polymers by : Helmut Kiess

Download or read book Conjugated Conducting Polymers written by Helmut Kiess. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the current understanding of electronic, optical and magnetic properties of conjugated polymers in both the semiconducting and metallic states. It introduces in particular novel phenomena and concepts in these quasi one-dimensional materials that differ from the well-established concepts valid for crystalline semiconductors. After a brief introductory chapter, the second chapter presents basic theore tical concepts and treats in detail the various models for n-conjugated polymers and the computational methods required to derive observable quantities. Specific spatially localized structures, often referred to as solitons, polarons and bipolarons, result naturally from the interaction between n-electrons and lattice displacements. For a semi-quantitative understanding of the various measure ments, electron-electron interactions have to be incorporated in the models; this in turn makes the calculations rather complicated. The third chapter is devoted to the electrical properties of these materials. The high metallic conductivity achieved by doping gave rise to the expression conducting polymers, which is often used for such materials even when they are in their semiconducting or insulating state. Although conductivity is one of the most important features, the reader will learn how difficult it is to draw definite conclusions about the nature of the charge carriers and the microscopic transport mechanism solely from electrical measurements. Optical properties are discussed in the fourth chapter.

Semiconducting Polymers

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Release : 1999-09-30
Genre : Science
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Semiconducting Polymers by : Bing R. Hsieh

Download or read book Semiconducting Polymers written by Bing R. Hsieh. This book was released on 1999-09-30. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the most recent developments in electronic conductive polymers. Topics include properties, applications, synthesis, processing and device fabrication.

Doping in Conjugated Polymers

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Release : 2013-08-26
Genre : Technology & Engineering
Kind : eBook
Book Rating : 803/5 ( reviews)

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Book Synopsis Doping in Conjugated Polymers by : Pradip Kar

Download or read book Doping in Conjugated Polymers written by Pradip Kar. This book was released on 2013-08-26. Available in PDF, EPUB and Kindle. Book excerpt: An A-to-Z of doping including its definition, its importance, methods of measurement, advantages and disadvantages, properties and characteristics—and role in conjugated polymers The versatility of polymer materials is expanding because of the introduction of electro-active behavior into the characteristics of some of them. The most exciting development in this area is related to the discovery of intrinsically conductive polymers or conjugated polymers, which include such examples as polyacetylene, polyaniline, polypyrrole, and polythiophene as well as their derivatives. "Synmet" or "synthetic metal" conjugated polymers, with their metallic characteristics, including conductivity, are of special interest to researchers. An area of limitless potential and application, conjugated polymers have sparked enormous interest, beginning in 2000 when the Nobel Prize for the discovery and development of electrically conducting conjugated polymers was awarded to three scientists: Alan J. Heeger, Alan G. MacDiarmid, and Hideki Shirakawa. Conjugated polymers have a combination of properties—both metallic (conductivity) and polymeric; doping gives the conjugated polymer's semiconducting a wide range of conductivity, from insulating to low conducting. The doping process is a tested effective method for producing conducting polymers as semiconducting material, providing a substitute for inorganic semiconductors. Doping in Conjugated Polymers is the first book dedicated to the subject and offers a comprehensive A-to-Z overview. It details doping interaction, dopant types, doping techniques, and the influence of the dopant on applications. It explains how the performance of doped conjugated polymers is greatly influenced by the nature of the dopants and their level of distribution within the polymer, and shows how the electrochemical, mechanical, and optical properties of the doped conjugated polymers can be tailored by controlling the size and mobility of the dopants counter ions. The book also examines doping at the nanoscale, in particular, with carbon nanotubes. Readership The book will interest a broad range of researchers including chemists, electrochemists, biochemists, experimental and theoretical physicists, electronic and electrical engineers, polymer and materials scientists. It can also be used in both graduate and upper-level undergraduate courses on conjugated polymers and polymer technology.

Semiconducting and Metallic Covalent Polymers: (CH)X and Its Derivatives

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Release : 1980
Genre :
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Book Synopsis Semiconducting and Metallic Covalent Polymers: (CH)X and Its Derivatives by :

Download or read book Semiconducting and Metallic Covalent Polymers: (CH)X and Its Derivatives written by . This book was released on 1980. Available in PDF, EPUB and Kindle. Book excerpt: POLYACETYLENE, (CH)x, is the simplest possible conjugated organic polymer and is therefore of special fundamental interest. It can be prepared in the form of lustrous, silvery, flexible, polycrystalline films having any desired cis/trans content by catalytic polymerization of gaseous acetylene, C2H2. The cis-rich films can be stretched easily at room temperature in excess of three times their original length with concomitant partial alignment of the (CH)x fibrils. Dark red gels of toluene in (CH)x may be prepared using a lower catalyst concentration. Highly porous, very low density, 'foam-like' (CH)x can be obtained from these gels. Both cis- and trans-(CH)x are p-type semiconductors which can be treated with a variety of p- or n-type dopants with concomitant increase in conductivity to give a series of semiconductors and ultimately, 'organic metals'. This report will be directed primarily towards a description of the more chemically oriented aspects of (CH)x and its derivatives. (Author).

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