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1997 | 91 | 3 | 513-518
Article title

Fast Stochastic Reorientations in Nematic PAA and PAP

Content
Title variants
Languages of publication
EN
Abstracts
EN
Incoherent quasielastic neutron scattering spectra were measured for nematic para-azoxyanisole (PAA) and para-azoxyphenetole (PAP) with the energy resolution of ca. 30 μ eV, at Dubna IBR-2 reactor. Data processing contained a careful background subtraction and the multiple scattering correction. The corrected spectra were subjected to a reorientational model fitting procedure. For PAA, a model of two convoluted reorientations - that of benzene rings coupled with the terminals and that of the whole molecule around the long molecular axis - gave a fairly good description of the quasielastic neutron scattering spectrum. For PAP, introducing a third motion - interconformational jumps in the ethoxy terminals - in addition to motions suggested for PAA, gave a good agreement with the measured quasielastic neutron scattering spectrum.
Keywords
EN
Publisher

Year
Volume
91
Issue
3
Pages
513-518
Physical description
Dates
published
1997-03
received
1996-10-22
(unknown)
1997-01-03
Contributors
author
  • Faculty of Chemistry of the Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
author
  • H. Niewodniczański Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland
author
  • H. Niewodniczański Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland
author
  • H. Niewodniczański Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland
author
  • Faculty of Chemistry of the Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv91z303kz
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