Dynamic surface properties of carboxyfullerene solutions

Dynamic surface properties of carboxyfullerene solutions

[Display omitted] •The surface rheological properties of carboxyfullerene C60(C(COOH)2)2 have been studied for the first time.•Carboxyfullerene displays high surface activity.•The absorption layer has a liquid-like nature.•The compression isotherms demonstrate high stability of surface aggregates in...

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Bibliographic Details
Published in:Journal of molecular liquids Vol. 372; p. 121174
Main Authors: Timoshen, K.A., Khrebina, A.D., Lebedev, V.T., Loglio, G., Miller, R., Sedov, V.P., Noskov, B.A.
Format: Journal Article
Language:English
Published: Elsevier B.V 15-02-2023
Subjects:
Carboxyfullerene
Dilatational surface rheology
Fullerene
Fullerene derivatives
Insoluble multilayers
Water – air interface
Fullerene
Carboxyfullerene
Insoluble multilayers
Water – air interface
Fullerene derivatives
Dilatational surface rheology
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Summary:[Display omitted] •The surface rheological properties of carboxyfullerene C60(C(COOH)2)2 have been studied for the first time.•Carboxyfullerene displays high surface activity.•The absorption layer has a liquid-like nature.•The compression isotherms demonstrate high stability of surface aggregates in the adsorption layer. Application of conventional methods of dilatational surface rheology in combination with optical techniques and atomic force microscopy allowed determination of the surface properties of a water-soluble fullerene derivative, carboxyfullerene C60(C(COOH)2)3. It has been shown that the surface activity of this derivative is higher than that of other soluble fullerene derivatives, for example, of fullerenols. The dynamic surface elasticity of carboxyfullerene solutions reaches up to values of about 180 mN/m. Brewster angle microscopy indicates a liquid-like nature of carboxyfullerene adsorption layers. The application of atomic force microscopy shows that these adsorption layers consist of numerous interconnected surface aggregates. The size and number of aggregates increase during adsorption. The compression of carboxyfullerene spread layers results in its partial dissolution. At the same time, the compression isotherms indicate a high stability of the layers of carboxyfullerene aggregates.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2022.121174