Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 240
Helmut G. Kiess, Dionys Baeriswyl. 5.2.3 Chemical Shift Tensor Chemical shift tensor σ is a measure of the local anisotropic fields as seen by the nuclei . Although the quantum mechanical calculation of the chemical shift tensor is ...
Helmut G. Kiess, Dionys Baeriswyl. 5.2.3 Chemical Shift Tensor Chemical shift tensor σ is a measure of the local anisotropic fields as seen by the nuclei . Although the quantum mechanical calculation of the chemical shift tensor is ...
Page 278
... shift and the Knight shift in trans- ( CH 0.076AsF5 ) x - 12 ppm and 2 ppm respectively , further support the viewpoint that the downfield shift has its origin in the removal of electrons from the polymer backbone . Comparison of the ...
... shift and the Knight shift in trans- ( CH 0.076AsF5 ) x - 12 ppm and 2 ppm respectively , further support the viewpoint that the downfield shift has its origin in the removal of electrons from the polymer backbone . Comparison of the ...
Page 280
... shift of the A and B lines towards low fields [ 5.90 ] . 13C shifts in PPS doped heavily with SO , [ 5.93 ] and TaF6 [ 5.94 ] are also very similar to its undoped state . Electrochemically and chemically oxidized PPy ( with BF [ 5.88 ] ...
... shift of the A and B lines towards low fields [ 5.90 ] . 13C shifts in PPS doped heavily with SO , [ 5.93 ] and TaF6 [ 5.94 ] are also very similar to its undoped state . Electrochemically and chemically oxidized PPy ( with BF [ 5.88 ] ...
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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