Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 102
... Peak and Triplet Absorptions . Besides the features described above , in several л - conjugated polymers one observes a high - energy peak in photo - induced absorption , which is not accompanied by additional IR modes and therefore ...
... Peak and Triplet Absorptions . Besides the features described above , in several л - conjugated polymers one observes a high - energy peak in photo - induced absorption , which is not accompanied by additional IR modes and therefore ...
Page 201
... peak at 0.45 eV is about - 10-5--10-4 for samples of about 0.1 μm thickness . The 0.45 eV peak and the IR modes vary with temperature and with the exciting light intensity in the same way , whereas the absorption peak at 1.35 eV behaves ...
... peak at 0.45 eV is about - 10-5--10-4 for samples of about 0.1 μm thickness . The 0.45 eV peak and the IR modes vary with temperature and with the exciting light intensity in the same way , whereas the absorption peak at 1.35 eV behaves ...
Page 279
... peak at − 127 ppm shows the presence of some trans material in the starting cis- ( CH ) ,. With progressing doping , the line around - 127 ppm disappears and two new peaks ≈ 150 ppm and ≈ – 50 ppm appear . The broad downfield shifted ...
... peak at − 127 ppm shows the presence of some trans material in the starting cis- ( CH ) ,. With progressing doping , the line around - 127 ppm disappears and two new peaks ≈ 150 ppm and ≈ – 50 ppm appear . The broad downfield shifted ...
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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