Dielectric response of light, heavy and heavy-oxygen water: isotope effects on the hydrogen-bonding network's collective relaxation dynamics

Abstract

Isotopic substitutions largely affect the dielectric relaxation dynamics of hydrogen-bonded liquid water; yet, the role of the altered molecular masses and nuclear quantum effects has not been fully established. To...

Isotope effects on the dynamics of amorphous ices and aqueous phosphoric acid solutions

“…For comparison with the present results (that are based on measurements of dynamic rather than thermodynamic quantities) it is reassuring that also kinetic observables such as the (zero-frequency) viscosity, 66 the dielectric microwave absorption, 14 and even responses in the terahertz and infrared regimes of liquid water and aqueous solutions show the same trends regarding the isotope shifts. 67,68…”

“…Thus, our findings vindicate the statement expressed in view of ref. 14 that “Recently, the central role of translational diffusion for dielectric relaxation was explicitly demonstrated by studying isotope effects on the dielectric relaxation spectra.” 63…”

“…[12][13][14][15] A survey focusing on dielectric spectroscopy investigations of water and aqueous solutions conveys the impression that the effects of a 1 H/ 2 H replacement [16][17][18][19] are much more frequently addressed than those induced by an 16 O/ 18 O substitution. 14,20 The same applies also for the amorphous ices: here, in recent years, the 1 H and 2 H labeled low-density amorphous (LDA) and high-density amorphous (HDA) forms have been under intense scrutiny, [21][22][23][24][25][26][27] while dielectric studies of oxygen-18 enriched amorphous ices are still missing. Yet, some information on these (as well as on oxygen-17) labeled ices is available from calorimetry, 28 thermal desorption spectroscopy, 29 and nuclear magnetic resonance (NMR).…”

“…A survey focusing on dielectric spectroscopy investigations of water and aqueous solutions conveys the impression that the effects of a 1 H/ 2 H replacement 16–19 are much more frequently addressed than those induced by an 16 O/ 18 O substitution. 14,20 The same applies also for the amorphous ices: here, in recent years, the 1 H and 2 H labeled low-density amorphous (LDA) and high-density amorphous (HDA) forms have been under intense scrutiny, 21–27 while dielectric studies of oxygen-18 enriched amorphous ices are still missing. Yet, some information on these (as well as on oxygen-17) labeled ices is available from calorimetry, 28 thermal desorption spectroscopy, 29 and nuclear magnetic resonance (NMR).…”

Correlation of Dielectric Properties with Structure and H-Bonding for Liquids

“…18 Shinde et al used an estimation of the average number of H-bonds in combinations of 1,3-propandiol and 1,4-dioxane to explain the dielectric constant behavior of their mixtures, 19 and a recent study by Kutus et al explored how differences in H-bonding interactions found in isotopes of water (H 2 16 O, D 2 16 O, and H 2 18 O) result in variation of their dielectric relaxation spectra. 20 In 2018, a study exploring the isopermitive frequency (IPF, defined as the frequency at which the relative permittivity of water is almost independent of temperature) investigated how the presence of ions (using NaCl/MgCl 2 ) can alter the Hbonding networks in water. This low-frequency technique (1− 40 MHz) obtained qualitative information about the H-bond networks in water solutions and their rearrangements.…”