Conjugated Conducting PolymersHelmut G. Kiess, Dionys Baeriswyl |
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Page 278
... trans isomerization in ( CH ) , has been investigated from measurements of the proton second moments M2 [ 5.51–53 , 239 ] . The second moment for undoped cis- ( CH ) , is larger by a few Gauss than for undoped trans- ( CH ) , and ...
... trans isomerization in ( CH ) , has been investigated from measurements of the proton second moments M2 [ 5.51–53 , 239 ] . The second moment for undoped cis- ( CH ) , is larger by a few Gauss than for undoped trans- ( CH ) , and ...
Page 279
... trans- ( CH ) , at various doping levels . a For y = 0 , a weak and partially resolved line at – 137 ppm in addition to the main peak at − 127 ppm shows the presence of some trans material in the starting cis- ( CH ) ,. With ...
... trans- ( CH ) , at various doping levels . a For y = 0 , a weak and partially resolved line at – 137 ppm in addition to the main peak at − 127 ppm shows the presence of some trans material in the starting cis- ( CH ) ,. With ...
Page 280
... trans- ( CH - 0.10AsF 5 ) x , T1 is smaller by a factor of 10 relative to undoped trans- ( CH ) , but exhibits w - 1 / 2 behaviour [ 5.135 ] . Similarly , in trans- ( CH ) , doped with about 15 mole percent Br , T1 is reduced by a ...
... trans- ( CH - 0.10AsF 5 ) x , T1 is smaller by a factor of 10 relative to undoped trans- ( CH ) , but exhibits w - 1 / 2 behaviour [ 5.135 ] . Similarly , in trans- ( CH ) , doped with about 15 mole percent Br , T1 is reduced by 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