Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 88
... Triplet Gap and Magnetic Excitations = Although not accessible to the ( spin - conserving ) optical transitions , triplet excitations from the ground state have long been of interest in studies of models for conducting polymers ( see ...
... Triplet Gap and Magnetic Excitations = Although not accessible to the ( spin - conserving ) optical transitions , triplet excitations from the ground state have long been of interest in studies of models for conducting polymers ( see ...
Page 89
... triplet exciton in polydiacetylene is about 0.75 eV , which is larger than that of the singlet exciton ( 0.5 eV ) in the same material . To date , the location of the lowest - lying triplet state in trans - polyacetylene and in aromatic ...
... triplet exciton in polydiacetylene is about 0.75 eV , which is larger than that of the singlet exciton ( 0.5 eV ) in the same material . To date , the location of the lowest - lying triplet state in trans - polyacetylene and in aromatic ...
Page 284
... triplet ESR spectrum of diradical reaction intermediates at 77 K. a experimental spectra , b simulated spectra . The hyperfine structure in the simulated spectra results from two CH2 groups [ 5.257a ] intermediates including their spin ...
... triplet ESR spectrum of diradical reaction intermediates at 77 K. a experimental spectra , b simulated spectra . The hyperfine structure in the simulated spectra results from two CH2 groups [ 5.257a ] intermediates including their spin ...
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A.J. Heeger atoms Baeriswyl band band gap behaviour bipolarons bond alternation bond lengths calculations chain charged solitons Chem chemical shift coefficient conducting polymers configuration conjugated polymers correlation Coulomb interactions coupling Cryst D.K. Campbell defects dependence dimerization discussed dopant doping doping levels e-e interactions effects electron spin electron-electron interactions electron-phonon ENDOR energy excitations exciton experimental Fermi finite polyenes frequency function ground Hamiltonian Hartree-Fock hopping Hubbard model Hückel independent-electron inter-chain kink lattice Lett linewidth magnetic metallic molecular neutral solitons nonlinear nonlinear optical nuclear observed obtained one-dimensional optical absorption optical gap pair 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 susceptibility symmetry Synth temperature theoretical theory trans trans-(CH trans-polyacetylene transition V₁ valence bond values Vardeny