Supramolecular structuring of aqueous solutions of strong acids: manifestations in light scattering, NMR, and oxidation kinetics. Does liquid have a drop-like nature?

Lagodzinskaya, G. V.; Laptinskaya, T. V.; Kazakov, A. I.

doi:10.1007/s11172-018-2358-2

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…Slow structuring of aqueous solutions may be a consequence of the "drop" structure of associated liquids, such as water, the cooperative nature of H-bonds in "drops" of the intrinsic structure of water and associates of solvates of substances dissolved in it (Lagodzinskaya et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Untitled

2023

WATER

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In the modern world, the focus of natural science research thought has shifted mainly to the molecular level, including the study of water. Water is considered as a mixture of interacting H 2 O molecules and their clusters based on the data of molecular dynamics, neutron, and X-ray scattering. In this case, a huge layer of information is lost related to the composition of real water, its microstructure and behavior. The aim of our study was to follow the phase transformations of hydrated liquid crystal water during the evaporation of free water using optical microscopy. We observed a panoramic picture of a cascade of interrelated phase transitions of distilled water and its microdispersed phase -sodium chloride (NaCl) microcrystals surrounded by a thick layer of hydrated liquid crystal water. Incubation of a glass slide in water for two days was accompanied by adhesion of the microdispersed phase to the glass surface. During the free evaporation of distilled water from a Petri dish, erosion of hydration shells, dissolution of NaCl microcrystals, and further recrystallization with the formation of large monolithic crystals and traces of non-drying water were observed. However, there are still questions that do not yet have clear answers. This work is intended to supplement our knowledge in the field of phase transitions of water during its evaporation from hydrophilic surfaces, which can be of not only theoretical, but also practical importance in, for example, the operation of water supply networks and water purification systems.

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Section: Resultsmentioning

confidence: 99%

Untitled

2023

WATER

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“…It has been established [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] that the majority of macroscopically homogeneous aqueous and non-aqueous solutions of various low molecular weight substances used in everyday life and ordinary laboratory practice are structured (inhomogeneous) at the nano and meso levels. The size of heterogeneities, supramers in our terminology [8], varies from ~1 nm to 10 2 -10 3 nm.…”

Section: Introductionmentioning

confidence: 99%

“…This new type of "weak" (judging by the magnitude of the interaction energy, which does not exceed k B T [17]), but the extremely effective and spontaneous structuring of liquids has not attracted the attention of researchers for a long time. Only recently has its importance been identified for an adequate description of reactions and other chemical processes [8,9,13,14,[18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Polarimetry as a method for studying the structure of aqueous carbohydrate solutions: correlation with other methods

Orlova¹,

Kononov²

2020

RENSIT

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The review provides data indicating that polarimetry is a sensitive tool for studying the structure of aqueous carbohydrate solutions. Using aqueous solutions of D-levoglucosan (1,6-anhydro-D-glucopyranose) as an example, it was demonstrated, using polarimetry, quantum chemical calculations, HPLC, static and dynamic light scattering, that polarimetry allows one to detect changes in the structure of solutions with changes in concentration and temperature, as well as the evolution of the structure of solutions over time. In particular, the phenomenon of the existence of "critical" concentrations and temperatures was discovered at which the specific rotation of the solutions undergo jump-like changes, apparently reflecting rearrangements in the structure of the solution. It is also possible that in the case of aqueous solutions, chiral carbohydrate molecules might act as "probes" that "sense" the slightest changes in their conformation or rearrangement of the environment (in the solvation shell) caused by changes in the structure of water, which at the macroscopic level manifests themselves as change in specific rotation.

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