A1H NMR study of glycerol at high pressure

R. F. Marzke, D. P. Raffaelle, K. E. Halvorson, George Wolf

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Relative proton chemical shifts and spin relaxation times T1 and T2 have been measured at 400 MHz and room temperature, as functions of pressure using the diamond anvil cell. Hydroxyl proton chemical shifts indicate a substantial increase in hydrogen bonding with increasing pressure, to 10 kbar. From T1 data, a minimum is inferred at a negative pressure of ∼ - 2.5 kbar, yielding an average molecular correlation time in excellent agreement with a value based independently upon extensive recent measurements of glycerol viscosity. It is concluded that over the observed pressure range NMR correlation times are essentially identical to shear (viscosity) relaxation times in glycerol, and that a single, well-defined average structural correlation time, τ, determines all relaxation phenomena in this liquid. Dielectric susceptibility and Brillouin scattering line width measurements support this conclusion, the former to very high (∼ 20 kbar) pressure. It is also found that values of the spin-spin relaxation rate T2 -1 yield approximately 2.2 × 1011 s-2 for the coupling constant between this rate and the correlation time, τ, under slow-hopping conditions, and that differences between observed pressure dependences of viscosity and spin relaxation rates are well accounted for by the pressure dependence of the infinite-frequency shear modulus, G.

Original languageEnglish (US)
Pages (from-to)401-407
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume172-174
Issue numberPART 1
DOIs
StatePublished - Sep 1 1994

Fingerprint

glycerols
Glycerol
Nuclear magnetic resonance
nuclear magnetic resonance
viscosity
pressure dependence
chemical equilibrium
Chemical shift
relaxation time
shear
Relaxation time
Protons
protons
anvils
Viscosity
Brillouin scattering
Diamond
Shear viscosity
diamonds
Linewidth

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Marzke, R. F., Raffaelle, D. P., Halvorson, K. E., & Wolf, G. (1994). A1H NMR study of glycerol at high pressure. Journal of Non-Crystalline Solids, 172-174(PART 1), 401-407. https://doi.org/10.1016/0022-3093(94)90464-2

A1H NMR study of glycerol at high pressure. / Marzke, R. F.; Raffaelle, D. P.; Halvorson, K. E.; Wolf, George.

In: Journal of Non-Crystalline Solids, Vol. 172-174, No. PART 1, 01.09.1994, p. 401-407.

Research output: Contribution to journalArticle

Marzke, RF, Raffaelle, DP, Halvorson, KE & Wolf, G 1994, 'A1H NMR study of glycerol at high pressure', Journal of Non-Crystalline Solids, vol. 172-174, no. PART 1, pp. 401-407. https://doi.org/10.1016/0022-3093(94)90464-2
Marzke, R. F. ; Raffaelle, D. P. ; Halvorson, K. E. ; Wolf, George. / A1H NMR study of glycerol at high pressure. In: Journal of Non-Crystalline Solids. 1994 ; Vol. 172-174, No. PART 1. pp. 401-407.
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