Electronic Properties of Conjugated Polymers: Proceedings of an International Winter School, Kirchberg, Tirol, March 14–21, 1987

ISBN-13: 9783642832864 / Angielski / Miękka / 2012 / 444 str.

Hans Kuzmany;Michael Mehring;Siegmar Roth

Opis

The International Winter School on Electronic Properties of Conjugated Polymers held March 14-21,1987, in Kirchberg (Austria) was a sequel to a meeting held in Kirchberg two years before on a similar subject. The 1987 winter school was organized in cooperation with the "Bundesministerium fiir Wissenschaft und Forschung" in Austria and the "Bundesministerium fiir Forschung und Technologie" in the Federal Republic of Germany. The basic idea of the meeting was to provide an opportunity for experienced scientists from universities and industry to discuss their most recent re sults and for students and young scientists to inform themselves about the present state of the research in this field. As in 1985, the scientific interest was concentrated on the electronic structure of various conjugated polymers and related compounds. The focus of interest in the field now appears to have broadened and cov ers not only conductivity and relaxation phenomena of polyacetylene but also nonlinear optical properties, highly oriented and single-crystal poly mers, and electrochemical and opto-electrochemical properties of special materials such as polypyrrole and polyaniline. Exciting results on conduc tivity - the mass specific conductivity (i.e., the conductivity divided by the density) of polyacetylene is more than twice that of copper ( ) - and a detailed interpretation of the meaning of conjugation length are reported."

Spis treści

I Conductivity.- Electronic Transport in Low-Conductivity Metals and Comparison with Highly Conducting Polymers.- Synthesis of New Conductive Electronic Polymers.- Long Mean Free Path Coherent Transport in Doped Polyacetylene.- Frequency- and Temperature-Dependent Dielectric Losses in Lightly Doped Conducting Polymers.- Variable-Range Hopping in Polymers Prepared from Iodo-(2-nitrophenyl)-acetylene.- Transport Studies on Polypyrrole Films Prepared from Aqueous TsONa Solutions of Different Concentrations.- II Defects and Conjugation Length.- Influence of the Conjugation Length of Polyacetylene Chains on the DC-Conductivity..- Conjugation Length and Localization in Conjugated Polymers.- Theoretical Investigations of Segmented Polyacetylene.- Analysis of the Raman Spectra of Modified trans-(CH)x.- Conformation of Conjugated Polymers and Their Relation to Electron Delocalisation.- Polyacetylene Segments in a Polyvinylidene-Chloride Matrix: Anisotropic Optical Properties.- III Electron Energy Loss, Optical and Raman Spectroscopy.- Electronic Structure of Conducting Polymers by Electron Energy-Loss Spectroscopy.- Electronic Structure of Undoped and Doped Polyphenylenevinylene..- Electronic Structure of Doped Highly Oriented Polyacetylene.- Polarization Dependence of Recombination Kinetics in Stretch-Oriented trans-Polyacetylene.- Photogeneration Mechanism and Mobility in Polydiacetylene.- Polarised Photoexcitation in Oriented Polyacetylene.- Radiative and Non-radiative Recombination Processes in Photoexcited Poly(p-phenylene vinylene).- Photoinduced Absorption in Poly(p-phenylene vinylene).- Spectroscopy of Photo-Induced Solitons in cis-rich and trans- Polyacetylene.- Photoinduced Infrared Absorption in Polydiacetylene.- Towards Solid State Investigations on Polyacetylene.- Raman Scattering of Highly Oriented Polyacetylene.- Experimental Raman Investigation of Oriented Undoped and Iodine Doped Polyacetylene.- Polarization Properties of the Raman Spectra in trans- and cis-Polyacetylene.- Interpretation of the Raman Spectra of n-doped trans-(CH)x Films..- IV Magnetic Resonance.- 10.1007/978-3-642-83284-0_28Pulsed ENDOR and TRIPLE Resonance on trans-Polyacetylene à 1a Durham Route.- ESR Study of Metallic Complexes of Alkali-Doped Polyacetylene.- In situ ESR Study During the Electrochemical Intercalation of Potassium in Polyacetylene.- 7Li NMR Study of the Electrochemical Doping of Poly(acetylene).- pz-Radical Electron Structure in Polydiacetylene (PDA) Molecules.- Triplet State ODMR of Polydiacetylene Crystals.- V Theory.- Electronic and Nonlinear Optical Properties of Conjugated Polymers: A Quantum Chemistry Approach.- On the Role of the Coulomb Interaction in Conjugated Polymer.- Lattice Relaxation Approach to Soliton and Polaron Dynamics in Conducting Polymers..- VI Polyaniline.- Photoelectrochemistry of Polyaniline.- Redox Mechanisms in Polyaniline Films.- In situ FTIR Spectroscopy of Polyaniline.- Spectroscopic Investigation of Polyaniline.- In situ Ellipsometry of Early Steps of Polyaniline Electrosynthesis.- Electronic Properties of Polyaniline.- On the Acidic Functions of Polyaniline.- Thermochromism and Acidochromism in Substituted Polyanilines.- Spectroscopic Studies of some Model Molecules for Polyaniline.- ESCA Studies of Polyaniline and Polypyrrole.- Mass Spectroscopy of Chemical Processes in Conducting Polymers: Polyaniline..- Synthesis and Properties of a Conducting Polymer Derived from Diphenylamine..- VII Polypyrrole, Polythiophene and Polyparaphenylene.- On Polaron and Bipolaron Formation in Conducting Polymers.- ESR of BF?4-Doped Poly(3-methylthiophene).- Influence of the Monomer Size on the Electronic Structure of Thiophene-Like Polymers.- Ion Implantation of Polythiophene.- Characterization of Polypyrrole-Polyvinyl Alcohol Composite Prepared by Chemical Oxidation of Pyrrole.- Electrochemistry of Polypyrrole-Ferrocyanide Films.- Synthesis and Physical Properties of 3,4-Disubstituted Polypyrroles..- A New Polyparaphenylene Thin Film Obtained by Electroreduction: Characterization and Electrochemical Studies.- VIII Special Materials.- Control of the State of Order in Poly(p-phenylene vinylene) and Its Effect on Iodine Doping.- Electronic Excitations in Polysilanes.- Doping Experiments with ?-(Pyrazine)phthalocyaninatoiron(II).- Optical and Electrical Properties of a New Conductive Polyheterocycle: Poly( 1,4-di(2-thienyl))benzene.- Preparation, Spectroscopic and Electrical Characterization of a New Polyheterocycle: Poly-benzo(l,2-6;4, 3-b)dithiophene.- Investigation of Undoped and Alkali-Metal Doped Poly(p-phenylene Selenide).- Structural Characterization of Polymers Prepared from Iodophenylacetylene by Heating at Different Temperatures.- Metallic Coordination Polymers Using CS2 as Starting Material.- (QP)4(SbF6)3: A Model Compound for Doped Polymers?.- IX Related Topics.- Supermolecular Structures Based on Langmuir-Blodgett Films.- Preparation and Structure of Langmuir-Blodgett Films of Polymers..- BEDT-TTF Radical Salts: Organic Metals and Superconductors.- Electrical Conducting Molecular Crystals in a Polymer Matrix.- X Applications.- Grafting, Ionomer Composites, and Auto-doping of Conductive Polymers..- On the Charge Storage Mechanism of Conducting Polymers.- Electrochemical Investigations and Neutron Activation Analysis of Polyacetylene.- Low Frequency Impedance Measurements on Polypyrrole.- Poly(alkyl thiophenes) and Poly(substituted heteroaromatic vinylenes): Versatile, Highly Conductive, Processible Polymers with Tunable Properties.- Electrical Conductivity in Heterogeneous Polymer Systems.- Organic and Polymeric Non-linear Optical Materials: Properties and Applications..- Preparation of Conducting Polymers by UHV-Compatible Methods..- Organic Semiconducting Polymers for New Electronic Devices.- Polymer-Based Conducting Material Used for Water Vapour Detection in Air.- A Novel Application of Conducting Polymers: Remotely Readable Indicator Devices..- Index of Contributors.