## Conjugated conducting polymers |

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Page 33

2.8, which is split into a valence band ej^' = — Ek and a conduction band ekc) = +

Ek, where Ek = (4tlcos2k + A20sin2k)il2. (2.42) In particular, there is an energy or

2.8, which is split into a valence band ej^' = — Ek and a conduction band ekc) = +

Ek, where Ek = (4tlcos2k + A20sin2k)il2. (2.42) In particular, there is an energy or

**band gap**of 2A0 between the top of the valence band, the highest occupied ...Page 182

With a twist angle of 90c, conjugation is destroyed and concomitantly, the density

of states significantly altered. Therefore, an assumed helicity of the pyrrole

polymer might be expected to reduce the

give rise ...

With a twist angle of 90c, conjugation is destroyed and concomitantly, the density

of states significantly altered. Therefore, an assumed helicity of the pyrrole

polymer might be expected to reduce the

**band gap**and rotational disorder togive rise ...

Page 193

Energy levels and possible optical transitions associated (a) with neutral,

positively and negatively charged solitons, (b) with hole and ... 4.10a. Only one

additional optical absorption line at half the energy of the

Doping ...

Energy levels and possible optical transitions associated (a) with neutral,

positively and negatively charged solitons, (b) with hole and ... 4.10a. Only one

additional optical absorption line at half the energy of the

**band gap**is predicted.Doping ...

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### Contents

Introduction | 1 |

An Overview of the Theory of Conjugated Polymers | 7 |

References | 114 |

Copyright | |

7 other sections not shown

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### Common terms and phrases

A.J. Heeger AsF5 atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations CH)x chain charged solitons Chem chemical shift coefficient conducting polymers configuration conjugated polymers correlation Coulomb interactions coupling Cryst D.K. Campbell decreases defects dependence dimerization discussed dopant dopant concentration doping doping levels e-e interactions effects electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental Fermi finite polyenes frequency function Hamiltonian Hartree-Fock Heeger hopping Hubbard model hyperfine interactions inter-chain kink lattice Lett linewidth magnetic metallic molecular 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 shown in Fig soliton spectra spectrum spin density SSH model structure symmetry Synth temperature theoretical theory trans-(CH)x transition triplet valence bond values Vardeny