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Preparation, characterization, and properties of fullerene-vinylpyrrolidone copolymers.

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Title: Preparation, characterization, and properties of fullerene-vinylpyrrolidone copolymers.
Authors: Jiang, Guichang1,2, Li, Guangtao2
Source: Biotechnology Progress. Jan2012, Vol. 28 Issue 1, p215-222. 8p.
Subjects: Copolymerization, Copolymers, Fullerenes, Molecular self-assembly, Polymerization, Scanning electron microscopy
Abstract: Water-soluble fullerene (C60)-N-vinylpyrrolidone copolymers were prepared by the radical polymerization method. The structures of the copolymers were characterized by Fourier transform infrared, UV-Vis, 1H NMR, 13C NMR, gel permeation chromatography, thermogravimetric analyses, and scanning electron microscopy (SEM). The results presented show that C60 and vinylpyrrolidone (VP) can be copolymerized under different conditions. With a constant benzoyl peroxide amount, C60 contents in the copolymers increase with increasing initial C60:VP reactant ratio. The assembly behavior of water-soluble C60-N-vinylpyrrolidone copolymers was investigated by SEM. The results show that the copolymers create morphology that is sphere-like. Fullerene-containing micro-/nano-sized copolymer fibers were prepared, for the first time, by electrospinning. The cytotoxicity to cancer cell lines of the copolymers was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide and confocal laser scanning microscope. The results show that copolymers exhibit better cytotoxicity against HeLa cells and mouse osteogenic sarcoma cells (cytotoxicity of copolymers is better than that of fullerene complex). The mechanism of fullerene-VP copolymerization was investigated for the first time. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2012 [ABSTRACT FROM AUTHOR]
Copyright of Biotechnology Progress is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Water-soluble fullerene (C60)-N-vinylpyrrolidone copolymers were prepared by the radical polymerization method. The structures of the copolymers were characterized by Fourier transform infrared, UV-Vis, 1H NMR, 13C NMR, gel permeation chromatography, thermogravimetric analyses, and scanning electron microscopy (SEM). The results presented show that C60 and vinylpyrrolidone (VP) can be copolymerized under different conditions. With a constant benzoyl peroxide amount, C60 contents in the copolymers increase with increasing initial C60:VP reactant ratio. The assembly behavior of water-soluble C60-N-vinylpyrrolidone copolymers was investigated by SEM. The results show that the copolymers create morphology that is sphere-like. Fullerene-containing micro-/nano-sized copolymer fibers were prepared, for the first time, by electrospinning. The cytotoxicity to cancer cell lines of the copolymers was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide and confocal laser scanning microscope. The results show that copolymers exhibit better cytotoxicity against HeLa cells and mouse osteogenic sarcoma cells (cytotoxicity of copolymers is better than that of fullerene complex). The mechanism of fullerene-VP copolymerization was investigated for the first time. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2012 [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Biotechnology Progress is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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