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Symmetry distortion of extended 1-D π-electron systems |
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| Authors: | N. Tyutyulkov N. Drebov F. Dietz |
| Affiliation: | aWilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Deutschland, Germany bFaculty of Chemistry, Chair of Physical Chemistry, University of Sofia, 1, J. Bourchier Blvd, BG-1126, Sofia, Bulgaria |
| Abstract: | It has been shown that a symmetry lowering from a state with higher symmetry to a state with lower symmetry (D(2m)d → C(2m)) occurs in 1-D polymers with polymethine fragments as elementary units when electron–vibration interaction is taken into account. The investigations are carried out using an extended Su–Schrieffer–Heeger method, where the electron–electron interaction is taken into account. |
| Keywords: | 1-D polymers Electron–vibration interaction Symmetry lowering (Peierls distortion) |
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