2016
DOI: 10.3103/s1541308x1601009x
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Bimodal dependence of light scattering/fluctuations on the concentration of aqueous solutions

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Cited by 8 publications
(7 citation statements)
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“…Using Raman scattering, the distribution function of OH oscillators over frequencies that depict the changes in the number of structural nano-associates can be understood. 21,22 As the contour of the OH band is affected by the hydrogen bond, 21 special attention was devoted to estimating the vibrational frequencies of the OH groups. This analysis provides the quantitative contributions of the molecules with different strengths of hydrogen bonding into the OH stretching bands.…”
Section: Resultsmentioning
confidence: 99%
“…Using Raman scattering, the distribution function of OH oscillators over frequencies that depict the changes in the number of structural nano-associates can be understood. 21,22 As the contour of the OH band is affected by the hydrogen bond, 21 special attention was devoted to estimating the vibrational frequencies of the OH groups. This analysis provides the quantitative contributions of the molecules with different strengths of hydrogen bonding into the OH stretching bands.…”
Section: Resultsmentioning
confidence: 99%
“…Arguments in favor of a micelle-like particle structure at 1•10 −4 N are the amphiphilic nature of Dox and the positive ζpotential value shown by ELS, which is characteristic of cationic surfactant micelles, as well as a small but reliably detectable decrease in the surface tension of the systems. As a rule, as the systems dilute, the micelle-like particles transform into domains, and below a threshold concentration (c thr )-into nanoassociates formed mainly by ordered structures of water (Andrievsky et al, 2009;Zhernovkov et al, 2010;Belov et al, 2011;Pollack, 2013;Pershin et al, 2016;Yinnon, 2020).…”
Section: Resultsmentioning
confidence: 99%
“…Insert of Figure 8 shows the logarithmic dependence of the fluorescence intensity (λ ex 480 nm, λ em 590 nm) on the Dox concentration in the range 1•10 −9 to 1•10 −5 M, which has a kink at 1•10 −7 M. This may imply that, starting from this concentration and below, the system is rearranged, accompanied by a change in the polarity of the water molecules and the nature of their interaction with the Dox chromophore groups. Indeed, the DLS method shows that starting from 1•10 −7 M and below, a dispersed phase of hundreds of nm in size is formed in the Dox aqueous system (Figure 1) consisting of Dox molecules and quasi crystalline water of EZ-type, significantly different from the "bulk" (Andrievsky et al, 2009;Zhernovkov et al, 2010;Belov et al, 2011;Pollack, 2013;Pershin et al, 2016;Yinnon, 2020).…”
Section: Resultsmentioning
confidence: 99%
“…Duval et al (2012) showed that the Landau-Placzek ratio, i.e., the ratio of the Rayleigh scattering intensity over the total Brillouin intensity, for SDVSAS of LiCl and for SDVSAS of sodium chloride (NaCl) depends non-monotonically on these liquids' NDS. Pershin et al (2015Pershin et al ( , 2016 demonstrated that for SDVSAS of potassium phenosan, the following variables were all found to depend non-monotonically on this liquid's NDS: the frequency of the center of the Raman scattering OH vibration band of its H 2 O, the Rayleigh line width in its four-wave mixing spectra, its integrated elastic scattering profile of 527-nm laser pulses, its fluctuation of the elastic-scattering coefficient and its optical activity. Kozumi and Kitagawa (2016) demonstrated that the aquaporin permeability of serially diluted, vigorously shaken water kept for 24 h in contact with ceramics nonmonotonically changes with the NDS.…”
Section: Measured Properties Of Sdvsasmentioning
confidence: 99%