The formation and evolution of microheterogeneous structures in aqueous isopropanol solu-tions were investigated using dynamic light scattering. It is shown that correlated orientationalinteractions due to hydrogen bonding give rise to coherent structures within the continuousthree-dimensional hydrogen-bond network of water. The characteristic size of these structuresexhibits a nonmonotonic dependence on isopropanol concentration, increasing from approx-imately 120 nm at low mole fractions (x≈0.001) to about 540 nm at higher concentrations(x≈0.1). The concentration dependence of the scattering intensity shows the presence of twomaxima, indicating a two-stage nature of the structuring process. At low concentrations, anincrease in intensity corresponds to the formation of numerous small scattering centers. Athigher concentrations, the system pass into regime characterized by larger aggregates andreduced number of scattering centers, resulting in decreased intensity. It is proposed that theobtained results indicate that the structural evolution of the system is governed by the competi-tion among water-water, water-isopropanol, and isopropanol-isopropanol interactions. Therearrangement of the hydrogen-bond network in water plays a key role in the emergence andtransformation of microheterogeneity.
| Mualliflar | Сабиров, Л.М., Исмаилов, Ф.Р., Жураев, Ю.Т., Омонов, Х.Ш., Умарова, Г.Н., Джуманиязов, Х.Ш. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashriyot | Ўзбекистон Республикаси Фанлар академияси |
| ISSN | 1025-8817, 2181-077X |
| Nashr sanasi | 2026-08-04 |
| Jild | 28 |
| Son | 2 |
| Til | Ingliz |
| Ilmiy soha | Fizika-matematika |
| DOI | 10.52304/.v28i2.652 |
| Indeksga qo‘shilgan | 2026-08-26 |
DOI: 10.52304/.v28i2.652 · Maqolaning asl sahifasi
динамическое рассеяние света, водные растворы, изопропанол, характерный размер, интенсивность рассеяния, микронеоднородность, Dynamic light scattering (DLS), water solutions, isopropanol, scattering intensity, microhete- rogeneity
| APA | Сабиров, Л.М., Исмаилов, Ф.Р., Жураев, Ю.Т., Омонов, Х.Ш., Умарова, Г.Н., & Джуманиязов, Х.Ш. (2026). Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering. O‘zbekiston fizika jurnali, 28(2). https://doi.org/10.52304/.v28i2.652 |
|---|---|
| GOST (OAK) | Сабиров, Л.М. va b. Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering // O‘zbekiston fizika jurnali. – 2026. – T. 28, № 2. – DOI: 10.52304/.v28i2.652. |
| MLA | Сабиров, Л.М., Исмаилов, Ф.Р., Жураев, Ю.Т., Омонов, Х.Ш., Умарова, Г.Н., and Джуманиязов, Х.Ш. “Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering.” O‘zbekiston fizika jurnali, 28(2), 2026. https://doi.org/10.52304/.v28i2.652 |
| Chicago | Сабиров, Л.М., Исмаилов, Ф.Р., Жураев, Ю.Т., Омонов, Х.Ш., Умарова, Г.Н., and Джуманиязов, Х.Ш. “Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering.” O‘zbekiston fizika jurnali, 28(2) (2026). https://doi.org/10.52304/.v28i2.652 |
| Harvard | Сабиров, Л.М., Исмаилов, Ф.Р., Жураев, Ю.Т., Омонов, Х.Ш., Умарова, Г.Н., and Джуманиязов, Х.Ш (2026) ‘Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering’, O‘zbekiston fizika jurnali, 28(2). https://doi.org/10.52304/.v28i2.652 |
| BibTeX | @article{article2026,
title = {Concentration-dependent structural changes in the water–isopropanol system studied by dynamic light scattering},
author = {Сабиров, Л.М. and Исмаилов, Ф.Р. and Жураев, Ю.Т. and Омонов, Х.Ш. and Умарова, Г.Н. and Джуманиязов, Х.Ш.},
journal = {O‘zbekiston fizika jurnali},
year = {2026},
volume = {28},
number = {2},
doi = {10.52304/.v28i2.652},
url = {https://doi.org/10.52304/.v28i2.652}
} |
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