QENS and NMR studies of 3-picoline-water solutions

L. Almásy, P. Bánki, M. C. Bellissent-Funel, M. Bokor, L. Cser, G. Jancsó, K. Tompa, J. M. Zanotti

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Quasi-elastic neutron scattering measurements were performed on aqueous solutions of 3-picoline (3-methylpyridine) at room temperature. H-D substitution on both the solute and the water was used to separate the dynamics of the two species. The analysis of the translational diffusive motion at different concentrations shows that at high picoline content the diffusion coefficient of water decreases strongly and becomes similar to that of the solute, indicating strong coupling between the motions of the solute and the solvent. Activation energies characteristic of the dynamic behavior of the methyl group were determined from 1H spin-lattice relaxation rate measurements for H2O and D2O solutions of 3-picoline above 310 K.

Original languageEnglish
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue numberSUPPL.I
DOIs
Publication statusPublished - Dec 2002

Fingerprint

Picolines
solutes
Nuclear magnetic resonance
nuclear magnetic resonance
Elastic scattering
Spin-lattice relaxation
Water
Neutron scattering
water
Substitution reactions
translational motion
Activation energy
spin-lattice relaxation
elastic scattering
neutron scattering
diffusion coefficient
substitutes
activation energy
aqueous solutions
room temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

QENS and NMR studies of 3-picoline-water solutions. / Almásy, L.; Bánki, P.; Bellissent-Funel, M. C.; Bokor, M.; Cser, L.; Jancsó, G.; Tompa, K.; Zanotti, J. M.

In: Applied Physics A: Materials Science and Processing, Vol. 74, No. SUPPL.I, 12.2002.

Research output: Contribution to journalArticle

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