Conjugated Conducting PolymersHelmut Kiess 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. |
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Page v
... nonlinear optical coefficients of these materials are high , so they could conceivably become useful in optical processing . The final chapter gives an account of the magnetic properties of these polymers . Nuclear magnetic resonance ...
... nonlinear optical coefficients of these materials are high , so they could conceivably become useful in optical processing . The final chapter gives an account of the magnetic properties of these polymers . Nuclear magnetic resonance ...
Page vii
... Nonlinear Excitations : Solitons , Polarons and Bipolarons 5 ་ 7 7 58 30 13 14 15 18 28 28 31 34 35 36 47 49 50 53 54 56 57 60 and Electron - Electron Interactions : Theory and Experiment 2.6.1 Ground State 2.6.2 Electronic Excitations ...
... Nonlinear Excitations : Solitons , Polarons and Bipolarons 5 ་ 7 7 58 30 13 14 15 18 28 28 31 34 35 36 47 49 50 53 54 56 57 60 and Electron - Electron Interactions : Theory and Experiment 2.6.1 Ground State 2.6.2 Electronic Excitations ...
Page 1
... Nonlinear Studies , Los Alamos National Laboratory , Mail Stop B 262 , Los Alamos , NM 87545 , USA Clark , Gilbert C. Department of Physics , University of California , Los Angeles , CA 90024 , USA Harbeke , Günther ( deceased ) ...
... Nonlinear Studies , Los Alamos National Laboratory , Mail Stop B 262 , Los Alamos , NM 87545 , USA Clark , Gilbert C. Department of Physics , University of California , Los Angeles , CA 90024 , USA Harbeke , Günther ( deceased ) ...
Page 3
... nonlinear excitations are localized in space and are stable even in the presence of other excitations . However , the theoretical modeling of the phenomena observed in conducting polymers turned out to be more intricate than originally ...
... nonlinear excitations are localized in space and are stable even in the presence of other excitations . However , the theoretical modeling of the phenomena observed in conducting polymers turned out to be more intricate than originally ...
Page 4
... . Chapter 4 reviews the optical properties including optical excitations across the gap and high up into the bands , the interaction of electromagnetic radiation with the lattice vibrations and the study of the nonlinear 1. Introduction 3.
... . Chapter 4 reviews the optical properties including optical excitations across the gap and high up into the bands , the interaction of electromagnetic radiation with the lattice vibrations and the study of the nonlinear 1. Introduction 3.
Contents
1 | |
7 | |
7 | 44 |
13 | 60 |
15 | 72 |
18 | 101 |
References | 114 |
28 | 115 |
Charge Transport in Polymers | 135 |
Theory and Experiment | 141 |
References | 171 |
References | 214 |
References | 297 |
Subject Index | 305 |
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Common terms and phrases
A.J. Heeger A.R. Bishop atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charged solitons Chem chemical shift cis-(CH conducting polymers configuration conjugated polymers correlation effects Coulomb interactions coupling Cryst D.K. Campbell defects dependence dimerization discussed dopant doping doping levels e-e interactions electron correlation electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental finite polyenes frequency function Hamiltonian Hartree-Fock hopping Hubbard model Hückel inter-chain kink Kivelson lattice Lett linewidth magnetic Mazumdar metallic molecular molecules neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap parameter peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman relaxation resonance Sect Solid State Commun spectra spectrum spin density SSH model susceptibility symmetry Synth temperature theoretical theory trans-(CH trans-polyacetylene transition triplet valence bond values Vardeny