## Conjugated conducting polymers |

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Page 84

Since the current operator mediating the optical transition transfers charge

between sites, the lowest optically allowed lBu ... However, attributing the

...

Since the current operator mediating the optical transition transfers charge

between sites, the lowest optically allowed lBu ... However, attributing the

**optical****gap**entirely to either of these interactions seems implausible; recalling our earlier...

Page 86

Obviously, it is pointless to attempt to determine unique values for several

parameters by fitting to a single observable, such as the

discussing how other experimental observables can be described within models

...

Obviously, it is pointless to attempt to determine unique values for several

parameters by fitting to a single observable, such as the

**optical gap**. But beforediscussing how other experimental observables can be described within models

...

Page 96

Interestingly, the correlated state corresponding to the bipolaron is still expected

to have two intra-gap absorptions, one at K, ... The

intra-gap transitions for the neutral and charged solitons are depicted in Fig.

Interestingly, the correlated state corresponding to the bipolaron is still expected

to have two intra-gap absorptions, one at K, ... The

**optical gap**together with theintra-gap transitions for the neutral and charged solitons are depicted in Fig.

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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