Hydrophilization and Functionalization of Fullerene C 60 with Maleic Acid Copolymers by Forming a Non-Covalent Complex.

Autor: Samoilova, Nadezhda A., Krayukhina, Maria A., Klemenkova, Zinaida S., Naumkin, Alexander V., Buzin, Michail I., Mezhuev, Yaroslav O., Turetsky, Evgeniy A., Andreev, Sergey M., Anuchina, Nelya M., Popov, Dmitry A.
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Zdroj: Polymers (20734360); Jun2024, Vol. 16 Issue 12, p1736, 15p
Abstrakt: In this study, we report an easy approach for the production of aqueous dispersions of C60 fullerene with good stability. Maleic acid copolymers, poly(styrene-alt-maleic acid) (SM), poly(N-vinyl-2-pyrrolidone-alt-maleic acid) (VM) and poly(ethylene-alt-maleic acid) (EM) were used to stabilize C60 fullerene molecules in an aqueous environment by forming non-covalent complexes. Polymer conjugates were prepared by mixing a solution of fullerene in N-methylpyrrolidone (NMP) with an aqueous solution of the copolymer, followed by exhaustive dialysis against water. The molar ratios of maleic acid residues in the copolymer and C60 were 5/1 for SM and VM and 10/1 for EM. The volume ratio of NMP and water used was 1:1.2–1.6. Water-soluble complexes (composites) dried lyophilically retained solubility in NMP and water but were practically insoluble in non-polar solvents. The optical and physical properties of the preparations were characterized by UV-Vis spectroscopy, FTIR, DLS, TGA and XPS. The average diameter of the composites in water was 120–200 nm, and the ξ-potential ranged from −16 to −20 mV. The bactericidal properties of the obtained nanostructures were studied. Toxic reagents and time-consuming procedures were not used in the preparation of water-soluble C60 nanocomposites stabilized by the proposed copolymers. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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