## Conjugated Conducting Polymers |

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Page 21

In general , these dependences are not known , and one therefore starts from a

reference ion

expands in powers of the ( assumed small ) displacements , u , = R , - R . If the ...

In general , these dependences are not known , and one therefore starts from a

reference ion

**configuration**{ R ' } , which is close to the actual**configuration**, andexpands in powers of the ( assumed small ) displacements , u , = R , - R . If the ...

Page 63

Within the context of Hartree – Fock approaches , the

CI ) method has been used to go ... The electron - electron interaction terms in the

many - body Hamiltonian will couple different

Within the context of Hartree – Fock approaches , the

**configuration**interaction (CI ) method has been used to go ... The electron - electron interaction terms in the

many - body Hamiltonian will couple different

**configurations**- ground state and ...Page 75

Helmut G. Kiess. In each case the two extreme

into each other by a successive application of H , - e , yielding a series of

intermediate states with the symmetric

extremes .

Helmut G. Kiess. In each case the two extreme

**configurations**can be transformedinto each other by a successive application of H , - e , yielding a series of

intermediate states with the symmetric

**configuration**half - way between theextremes .

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### Contents

Introduction | 1 |

An Overview of the Theory of rConjugated Polymers | 7 |

IndependentElectron | 17 |

Copyright | |

5 other sections not shown

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### Common terms and phrases

absorption addition applied approach approximation atoms band behaviour bipolarons bond bond alternation calculations carriers chain charged chemical concentration conductivity configuration conjugated polymers correlation corresponding Coulomb Coulomb interactions coupling decreases defects density dependence described determined dimerization discussed dopant doping effects electron electron-electron electron-phonon ENDOR energy excitations expected experimental experiments field finite frequency function give ground Hamiltonian hopping Hubbard hyperfine important increase indicated interactions interpretation involving lattice leads length Lett limit magnetic materials measurements metallic methods modes motion neutral nuclear observed obtained one-dimensional optical pair parameter peak phonon Phys physical polarons polyacetylene polyenes polymers position properties range relaxation resonance respect samples Sect shift shown shows similar single Solid soliton spectra spectrum spin structure studies symmetry Synth temperature theoretical theory trans-(CH transition units valence values whereas