## Conjugated conducting polymers |

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Page 192

The ground state of a finite (CH)„ with an even number of carbon atoms obviously

does not contain a soliton, whereas in odd-numbered chains for topological and

energtic reasons, a domain wall (a

The ground state of a finite (CH)„ with an even number of carbon atoms obviously

does not contain a soliton, whereas in odd-numbered chains for topological and

energtic reasons, a domain wall (a

**neutral soliton**) is incorporated [4.61].Page 199

adding an electron to the

solitons. It has been found that upon doping new strong absorption bands appear

at 0.7-0.8 eV, and in the infrared vibrational excitations at 900, 1280 and ...

adding an electron to the

**neutral solitons**, thus transforming them into chargedsolitons. It has been found that upon doping new strong absorption bands appear

at 0.7-0.8 eV, and in the infrared vibrational excitations at 900, 1280 and ...

Page 201

It has therefore been assigned to

is due to

accompanied by bleaching in the intrinsic absorption region. Since the

experimental ...

It has therefore been assigned to

**neutral**excitations. If the absorption at 0.45 eVis due to

**solitons**(or other defects), then theory predicts that it should beaccompanied by bleaching in the intrinsic absorption region. Since the

experimental ...

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### Contents

Introduction | 1 |

An Overview of the Theory of Conjugated Polymers | 7 |

References | 114 |

Copyright | |

5 other sections not shown

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### Common terms and phrases

A.J. Heeger 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 Hiickel 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 trans-(CH)x transition triplet valence bond values Vardeny