Uniplanar orientations as a tool to assign vibrational modes of polymer chain

Alexandra R. Albunia, Paola Rizzo, Gaetano Guerra, F. Javier Torres, Bartolomeo Civalleri, Claudio M. Zicovich-Wilson

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

35 Citas (Scopus)

Resumen

The occurrence of films with different uniplanar orientations of the crystalline phase, which allows an experimental evaluation of the orientation of transition moment vectors (TMV) of vibrational modes corresponding to most infrared peaks were studied. It was also studied that this information allows the difficult task of assignment of modes to vibrational peaks of complex polymer helices to be afforded. The quantum mechanical calculations were carried out with the CRYSTAL06 code10 by adopting the B3LYP functional together with a Gaussian Type all-electron 6-3lG(d,p) basis set as level of theory. The resulting computed frequencies were scaled by a factor of 0.972 to best fit the experimental values in the selected region in order to compare the computed and the experimental spectra. A graphical representation of the IR computed spectrum was obtained by using the calculated JR intensities and a Lorentzian profile.

Idioma originalInglés estadounidense
Páginas (desde-hasta)3895-3897
Número de páginas3
PublicaciónMacromolecules
Volumen40
N.º11
DOI
EstadoPublicada - may 29 2007
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Química orgánica
  • Polímeros y plásticos
  • Química inorgánica
  • Química de los materiales

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