Dissociation of fullerenol-70-d in aqueous solutions and their electric conductivity

Tyurin, D.P.; Semenov, Konstantin N.; Чарыков, Н. А.; Cherepkova, I. A.; Кескинов, В. А.

doi:10.1134/s0036024415040263

Cited by 6 publications

(7 citation statements)

References 2 publications

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“…This article is a continuation in the series of articles devoted to the synthesis, identification and physico-chemical properties investigation of nanoclusters, which represented the fairly water soluble derivatives of light fullerenes C 60 and C 70 [1][2][3][4][5][6][7][8][9][10][11][12][13][14] -poly-hydroxylated fullerenols fullerenol-d C 60 (OH) 24±2 and malonic ether -trismalonate C 70 [=C(COOH) 2 ] 3 . In previous articles, the authors have reported on the volume, refraction, electrical, transport properties of water soluble nanoclusters and their aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Cryometry and excess functions of the adduct of light fullerene C60 and arginine – C60(C6H12NaN4O2)8H8 aqueous solutions

Matuzenko¹,

Shestopalova²,

Semenov³

et al. 2015

Nanosist.: fiz. him. mat.

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Cryometry investigation of C 60 (C 6 H 12 NaN 4 O 2 ) 8 H 8 -H 2 O solutions was made over concentrations ranging from 0.1 -10 g of fullerene-arginine adduct per 1 dm 3 . Freezing point depression was measured for these aqueous solutions. Excess functions for water and fullerene-arginine adduct activities, activity coefficients and excess Gibbs energy of the solutions were calculated. All solutions demonstrate huge deviations from ideality. The last fact, to our opinion, is caused by the very specific -hierarchical type of association of fullerene-arginine adducts in aqueous solution components, which is proved by the results of our visible light scattering analysis.

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Section: Introductionmentioning

confidence: 99%

Cryometry and excess functions of the adduct of light fullerene C60 and arginine – C60(C6H12NaN4O2)8H8 aqueous solutions

Matuzenko¹,

Shestopalova²,

Semenov³

et al. 2015

Nanosist.: fiz. him. mat.

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show abstract

“…-The third type aggregates (third order clusters of percolation) have not been seen at any concentrations except in the most concentrated solution at C > 1 g/dm 3 , where clusters with extremely huge linear dimension (some microns) are formed: d 3 > 1000 nm -the solution 'becomes very heterogeneous' but stable as a colloid system.…”

Section: Reasons For Direct Excess Functions In Fullerenols (Trismalomentioning

confidence: 99%

“…In order to check the possibility of determining the excess function of C 3 we can be sure that no solid crystal hydrates can co-crystallize with water ice during crystallization of the respective solutions.…”

Section: The Possibility Of Determining Excess Functions In Fullerenomentioning

confidence: 99%

“…In all calculations, we will use symmetrical normalization of the excess functions, as if nanoclusters are very weak electrolytes -practically non-electrolytes (see, for example [4,6,12]). So, we assume that:…”

Section: Cryometry Investigation In Thementioning

confidence: 99%

“…This article is the continuation of a series of articles devoted to the synthesis, identification and physico-chemical properties investigation of nanoclusters, which represented the moderately water soluble derivatives of light fullerenes C 60 and C 70 [1][2][3][4][5][6][7][8][9][10][11][12][13][14] -poly-hydroxyl fullerenols (fullerenol-d C 60 (OH) 24±2 and malonic ester -trismalonate C 70 [=C(COOH) 2 ] 3 ). In previous articles' authors have reported on the volume, refraction, electrical, transport properties of these water soluble nanoclusters and their aqueous solutions, also investigations of solubility in water in poly-thermal conditions and in some ternary water-salt systems and complex thermal analysis of nanocluster crystal-hydrates were performed.…”

Section: Introductionmentioning

confidence: 99%

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Cryometry and excess functions of fullerenols and trismalonates of light fullerenes – C60(OH) and C70[=C(COOH)2]3 aqueous solutions

Matuzenko¹,

Tyurin²,

Manyakina³

et al. 2015

Nanosist.: fiz. him. mat.

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Cryometry investigations of the C 60 (OH) 24±2 -H 2 O and C 70 [=C(COOH) 2 ] 3 -H 2 O binary systems were conducted over the 0.1 -10 g concentration range of fullerenols per 1 dm 3 of solutions. The decreases of the temperatures at the onset of H 2 O -ice crystallization were determined. Excess functions of aqueous solutions -water and fullerenols (trismalonates) activities and activity coefficients and excess Gibbs energy of the solutions were calculated. All solutions demonstrated huge deviations from those of ideal solutions. The last fact, to our opinion, is caused by a very specific -hierarchical type of association of fullerenols (trismalonates) solution components, which was proved by the results of visible light scattering analysis.

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Antioxidant activity of highly hydroxylated fullerene C60 and its interactions with the analogue of α-tocopherol

Grebowski

Konopko

Krokosz

et al. 2020

Free Radical Biology and Medicine

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Dissociation of fullerenol-70-d in aqueous solutions and their electric conductivity

Cited by 6 publications

References 2 publications

Cryometry and excess functions of the adduct of light fullerene C60 and arginine – C60(C6H12NaN4O2)8H8 aqueous solutions

Cryometry and excess functions of the adduct of light fullerene C60 and arginine – C60(C6H12NaN4O2)8H8 aqueous solutions

Cryometry and excess functions of fullerenols and trismalonates of light fullerenes – C60(OH) and C70[=C(COOH)2]3 aqueous solutions

Antioxidant activity of highly hydroxylated fullerene C60 and its interactions with the analogue of α-tocopherol

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