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Article Dans Une Revue Chemical Physics Letters Année : 2007

Terahertz spectroscopy of the crystalline alpha-quaterthiophene: A combined experimental and density functional theory study

Résumé

We have investigated the experimental terahertz phonon modes in a model oligothiophene, the alpha-quaterthiophene (LT phase), by using infrared and inelastic neutron scattering spectroscopy in the 10-50 cm(-1) (0.3-1.5 THz) domain. The ability of density functional theory to reproduce the terahertz infrared phonon modes is also reported. In agreement with the calculation, the experimental infrared spectrum at 10 K is dominated by two phonon modes centered at 32 and 46 cm-(1) respectively assigned to an antiphasis translation mode and a libration of rings. (C) 2007 Published by Elsevier B.V.
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hal-00496380 , version 1 (30-06-2010)

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  • HAL Id : hal-00496380 , version 1

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Patrick Hermet, Jean-Louis Bantignies, David Maurin, Jean-Louis Sauvajol. Terahertz spectroscopy of the crystalline alpha-quaterthiophene: A combined experimental and density functional theory study. Chemical Physics Letters, 2007, 445 (1-3), pp.47-50. ⟨hal-00496380⟩
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