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85080602475
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In chemical terminology a positive polaron (which is an expression used in solid-state physics) corresponds to a radical cation, associated to a local geometry relaxation; see ref. [6].
-
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12
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85080597947
-
-
note
-
A bipolarom is a pair of like charges with an associated strong local geometry deformation; see ref. [6].
-
-
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-
13
-
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85080543038
-
-
note
-
Furukawa (ref. [9]) has estimated the expected intensity ratio of the two subgap absorptions for polythiophene based on FBC theory (ref. [5]) to be about 14, in sharp contrast with the observed ratio of about 1.2.
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85080493166
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Detailed investigations of the influence of the solvent and solvent polarity on the dimerization enthalpy of radical cations are in progress.
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32
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39
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85080586694
-
-
note
-
It is also possible to rationalize this by stating that the energy required to remove an electron from a fragment of a long chain which already carries a charge is higher than the energy needed to remove the electron from a neutral part of the same chain.
-
-
-
-
43
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-
85080608448
-
-
note
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2, respectively.
-
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44
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0003113119
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Examples can be found for oligothiophenes in ref. [13], for oligopyrroles in ref. [25], and for oligo(p-phenylene vinylene)s see: M. Deusen, H. Bässler, Chem. Phys. 1992, 164, 247.
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84901796319
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85080581164
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note
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B 〉 ) ≠ 0.
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0003561662
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John Wiley, New York
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33751155255
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Small amounts of α-chlorinated by-products are known to be formed during the oligomer synthesis in the oxidative coupling reaction of the α-lithio derivatives with cupric chloride. See: a) H. E. Katz, L. Torsi, A. Dodabalapur, Chem. Mater. 1995, 7, 2235; b) H. E. Katz, L. Torsi, A. Dodabalapur, A. J. Lovinger, R. Ruel, Polym. Mater. Sci. Eng. 1995, 72, 467.
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Small amounts of α-chlorinated by-products are known to be formed during the oligomer synthesis in the oxidative coupling reaction of the α-lithio derivatives with cupric chloride. See: a) H. E. Katz, L. Torsi, A. Dodabalapur, Chem. Mater. 1995, 7, 2235; b) H. E. Katz, L. Torsi, A. Dodabalapur, A. J. Lovinger, R. Ruel, Polym. Mater. Sci. Eng. 1995, 72, 467.
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61
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85080496248
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-
note
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.+ is expected at m/z = 1658.6 amu, i.e. 2 amu less than observed.
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0028524346
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66
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85080526151
-
-
note
-
2+ π dimer, while the band at E = 1.81 eV evolves into a shoulder.
-
-
-
-
67
-
-
85080553153
-
-
note
-
The exact origin of this discrepancy is unclear. The only difference between the two experiments is that Bäuerle et al.[17] used one regioisomer of 6T (i.e., 3″″,4′-didodecyl-2,2′:5′,2″:5″, 2‴: 5‴,2″″:5‴,2″‴-sexithiophene) while in this study the dodecyl side chains on the second and fifth thiophene ring are either at the 3 or the 4 position, resulting in a mixture of three regioisomers, (3′,4″″)-, (3′,3″″)-, and (3″″,4′)-dodecyl, for 6T.
-
-
-
-
69
-
-
85080605570
-
-
note
-
2 + 1.86/n + 2.49 eV is obtained for the absorption maximum of neutral nT, which gives n ≈ 31 when E = 2.56eV.
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70
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0023344786
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S. D. D. V. Rugooputh, S. Hotta, A. J. Heeger, F. Wudl, Polym. Sci. Polym. Phys. Ed. 1987, 25, 1071.
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73
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85080468625
-
-
note
-
AB of the two singly occupied MOs carrying the unpaired electrons.
-
-
-
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75
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85080605637
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-
note
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-7 eV) to still give the diradical spectrum. Clearly this is much less than the thermal energy.
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