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2014 | 12 | 3 | 215-220
Tytuł artykułu

Charge-sensitive vibrational modes in the (EDT-TTF-OX)2AsF6 chiral molecular conductors

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Infrared and Raman spectra of three chiral molecular conductors (EDT-TTF-OX)2AsF6, comprising of two salts based on enantiopure EDT-TTF-OX donor molecules and one based on their racemic mixture, have been measured as a function of temperature. In the frequency range of the C=C stretching vibrations of EDT-TTF-OX, charge-sensitive modes are identified based on theoretical calculations for neutral and oxidized EDT-TTF-OX using density functional theory (DFT) methods. The positions of C=C stretching modes in both Raman and infrared spectra of the (EDT-TTF-OX)2AsF6 materials are analyzed assuming a linear relationship between the frequency and charge of the molecule. The charge density on the EDTTTF-OX donor molecule is estimated to be +0.5 in all investigated materials and does not change with temperature. Therefore we suggest, that M-I transition observed in (EDT-TTF-OX)2AsF6 chiral molecular conductors at low temperature is not related to the charge ordering mechanism.
Wydawca

Czasopismo
Rocznik
Tom
12
Numer
3
Strony
215-220
Opis fizyczny
Daty
wydano
2014-03-01
online
2014-03-13
Twórcy
  • Institute of Molecular Physics Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland
  • Laboratoire Moltech Anjou, UMR 6200 CNRS, Universite d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045, Angers, France
autor
  • Laboratoire Moltech Anjou, UMR 6200 CNRS, Universite d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045, Angers, France
  • Laboratoire Moltech Anjou, UMR 6200 CNRS, Universite d’Angers, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045, Angers, France
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-014-0443-1
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