## Conjugated conducting polymers |

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Page 186

Traditionally, the distinction is made between

phonons and Brillouin scattering from acoustic phonons. The part of the scattered

light with lower frequency than the incident light is called the Stokes component,

...

Traditionally, the distinction is made between

**Raman**scattering from opticalphonons and Brillouin scattering from acoustic phonons. The part of the scattered

light with lower frequency than the incident light is called the Stokes component,

...

Page 189

electron-phonon coupling, certain

photon energies above the band gap. Therefore resonant

also ...

**Raman**scattering directly probes even parity vibrations of a chain. Due to theelectron-phonon coupling, certain

**Raman**lines are resonantly enhanced forphoton energies above the band gap. Therefore resonant

**Raman**scattering isalso ...

Page 190

Hence, varying the optical excitation energy will give rise to shifts of the

frequencies. In order to fit the experimental data, a double-peaked distribution of

chain lengths was assumed, corresponding to a distribution peaking at chain ...

Hence, varying the optical excitation energy will give rise to shifts of the

**Raman**frequencies. In order to fit the experimental data, a double-peaked distribution of

chain lengths was assumed, corresponding to a distribution peaking at chain ...

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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