Conjugated Conducting Polymers |
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Page 239
Pulse scheme for the nutation experiment . The rf field on the protons is on
continuously to suppress the 13C - ' H interactions . The application of a nutation
pulse train after the cross - polarization sequence minimizes the chemical shift
effects .
Pulse scheme for the nutation experiment . The rf field on the protons is on
continuously to suppress the 13C - ' H interactions . The application of a nutation
pulse train after the cross - polarization sequence minimizes the chemical shift
effects .
Page 241
Comparison of several ' 3C chemical shift tensors of alternating double bonds [ 5
. 75 ] shift interactions ( causing a frequency shift w , ) and dipole - dipole
interactions ( causing a splitting w2 ) . The different interactions can be observed
...
Comparison of several ' 3C chemical shift tensors of alternating double bonds [ 5
. 75 ] shift interactions ( causing a frequency shift w , ) and dipole - dipole
interactions ( causing a splitting w2 ) . The different interactions can be observed
...
Page 243
A highly oxygen - contaminated sample shows in addition to the ordinary 13C
chemical shift tensor , another set of lines with [ 5 . 83 ] Ou = – 242 + 7 ppm , 02 =
– 174 + 16 ppm and 033 = – 132 + 13 ppm . Comparison of this tensor with that of
...
A highly oxygen - contaminated sample shows in addition to the ordinary 13C
chemical shift tensor , another set of lines with [ 5 . 83 ] Ou = – 242 + 7 ppm , 02 =
– 174 + 16 ppm and 033 = – 132 + 13 ppm . Comparison of this tensor with that of
...
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Contents
Introduction | 1 |
An Overview of the Theory of rConjugated Polymers | 7 |
References | 114 |
Copyright | |
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absorption addition applied approach approximation atoms band behaviour bipolarons bond bond alternation calculations carriers chain charged chemical concentration conductivity configuration conjugated polymers contribution correlation corresponding Coulomb Coulomb interactions coupling decreases defects density dependence described determined dimerization discussed dopant doping effects electron electron-electron energy excitations expected experimental experiments field finite frequency function give ground Hamiltonian hopping Hubbard important increase indicated interactions interpretation involving lattice leads length Lett limit localized magnetic materials measurements metallic methods modes molecules motion neutral nuclear observed obtained optical pair parameter peak phonon Phys Physics polarons polyacetylene polyenes polymers position properties range relaxation resonance respect samples Sect separation shift shown shows similar single soliton spectra spectrum spin structure studies symmetry Synth temperature theoretical theory trans-(CH transition units valence values whereas