Possible relations between supercooled and glassy confined water and amorphous bulk ice

Swenson, Jan

doi:10.1039/c8cp05688a

Cited by 35 publications

(46 citation statements)

References 89 publications

(173 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…86 The dash-dotted line is a critical law with Tc = 228 K, proposed for bulk water. 46,106 The solid line is a fit of the high-temperature (T > 175 K, i.e., 1000/T < 5. Figure 3 shows an Arrhenius representation of the temperature-dependent relaxation times of process 3 as obtained from these fits (closed circles).…”

Section: Resultsmentioning

confidence: 99%

Supercooled water confined in a metal-organic framework

et al. 2020

View full text Add to dashboard Cite

Within the so-called "no-man's land" between about 150 and 235 K, crystallization of bulk water is inevitable. The glasslike freezing and a liquid-to-liquid transition of water, predicted to occur in this region, can be investigated by confining water in nanometersized pores. Here we report the molecular dynamics of water within the pores of a metalorganic framework using dielectric spectroscopy. The detected temperature-dependent dynamics of supercooled water matches that of bulk water as reported outside the borders of the no-man's land. In confinement, a different type of water is formed, nevertheless still undergoing a glass transition with considerable molecular cooperativity. Two different length scales seem to exist in water: A smaller one, of the order of 2 nm, being the cooperativity length scale governing glassy freezing, and a larger one (> 2 nm), characterizing the minimum size of the hydrogen-bonded network needed to create "real" water with its unique dynamic properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Supercooled water confined in a metal-organic framework

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Liquid water is qualitatively different from many other liquids, since for instance water's thermodynamic properties diverge as the liquid is cooled, a behavior often called ''anomalous''. [41][42][43][44] Various thermodynamic scenarios have been proposed to explain these anomalies. One of the scenarios suggests the existence of two phases of liquid water: a high density liquid (HDL) and a low density liquid (LDL), [45][46][47] as depicted in the temperature-pressure phase diagram in Fig.…”

Section: Supercooled Watermentioning

confidence: 99%

Towards molecular movies with X-ray photon correlation spectroscopy

Perakis

Gutt

2020

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Finally, it is worth mentioning the proximity of T g '= -124°C is significantly lower than for usual freezeconcentrated and freeze-dried materials, which can be associated to the low value of Tg of the pure DES itself [23,34]. As a result, it also lies close to the temperature (T g water =-137°C), which has been considered as the glass transition temperature of pure water, although the exact location of the liquid-to-glass transition of bulk water has be questioned recently and it is still the matter of exciting discussion [35].…”

Section: J O U R N a L P R E -P R O O F 20mentioning

confidence: 99%

Phase behavior of aqueous solutions of ethaline deep eutectic solvent

Jani

Sohier

Morineau

2020

Journal of Molecular Liquids

View full text Add to dashboard Cite

We have established a detailed phase diagram of a prototypical DES as a function of the hydration level. Two distinct thermal phase behaviors are observed depending on the water content with respect to a cross-over composition W g ' = 30%. For W < W g ', the formation of ice is not observed under the experimental conditions used in this study, and the solution falls in the category of glassforming systems. Fully vitreous states could also be obtained between 30% and 50%, but they are metastable with respect to water crystallization. For W > W g ', ice crystallization occurs but the residual DES solution remains amorphous (liquid or glassy). In the latter case, whatever the initial water fraction, this transformation finally ends at the fixed composition W g ' corresponding to 6 to 10 water molecules per choline ion for the two studied DESs. We infer that the residual liquid water molecules forming this maximally freeze-concentrated solution are strongly interacting with DES molecular units. This situation is also known as the "water-in-DES" case. Conversely, ice crystallization concerns free water molecules, provided that W > W g ', also known as the "DES-in-water" case. This entire phase behavior is explained in the context of maximally freeze-concentrated solutions and attributed to the concomitant effects of ice freezing depression, glassforming ability of weakly hydrated DES Journal Pre-proof J o u r n a l P r e-p r o o f 2 (W < W g ') and water structure distortion. This study also highlights the potential of DESs for their uses in freeze-drying processes and biopreservative applications.

show abstract

Possible relations between supercooled and glassy confined water and amorphous bulk ice

Abstract: A proposed relaxation scenario of bulk water based on studies of confined water and low density amorphous ice.

Cited by 35 publications

References 89 publications

Supercooled water confined in a metal-organic framework

Supercooled water confined in a metal-organic framework

Towards molecular movies with X-ray photon correlation spectroscopy

Phase behavior of aqueous solutions of ethaline deep eutectic solvent

Contact Info

Product

Resources

About