Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 84
... optical transition transfers charge between sites , the lowest optically allowed 1B1 state must have one double occupancy and hence some ionic character . Other states of 1B symmetry made from purely covalent diagrams may lie lower in ...
... optical transition transfers charge between sites , the lowest optically allowed 1B1 state must have one double occupancy and hence some ionic character . Other states of 1B symmetry made from purely covalent diagrams may lie lower in ...
Page 86
... optical gap . But before discussing how other experimental observables can be described within models incorporating both e - p and e - e interactions , it is instructive to compare the optical properties of polyacetylene to those of ...
... optical gap . But before discussing how other experimental observables can be described within models incorporating both e - p and e - e interactions , it is instructive to compare the optical properties of polyacetylene to those of ...
Page 195
... optical transitions and their position in energy , it is important to know the structure and intensity of the optical absorption bands . The optical absorption coefficients due to a charged soliton , a polaron and a bipolaron are a ...
... optical transitions and their position in energy , it is important to know the structure and intensity of the optical absorption bands . The optical absorption coefficients due to a charged soliton , a polaron and a bipolaron are a ...
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A.J. Heeger atoms Baeriswyl band gap behaviour bipolarons bond alternation bond lengths calculations chain charge carriers charged solitons Chem chemical shift cis-(CH conducting polymers conjugated polymers correlation Coulomb interaction coupling Cryst D.K. Campbell defects dielectric function diffusion dimerization discussed dopant dopant concentration dopant molecules doping doping levels e-e interactions effects electron correlation electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental frequency function Hamiltonian Hartree-Fock hopping Hubbard model Hückel hyperfine interactions inter-chain Kivelson lattice Lett linewidth magnetic metallic molecular neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap parameters peak Peierls Peierls-Hubbard model phonon Phys polarons polyacetylene polyenes polypyrrole polythiophene properties proton quantum quasi-particles Raman resonance samples Sect shown in Fig spectra spectrum spin density structure symmetry Synth tensor theory trans trans-(CH trans-polyacetylene transition valence values Vardeny