Comparison of the aggregation behavior of water-soluble hexa(sulfobutyl)fullerenes and polyhydroxylated fullerenes for their free-radical scavenging activity

被引：0

作者：

Jeng, US ^{[1
]}

Lin, TL ^{[1
]}

Chang, TS ^{[1
]}

Lee, HY ^{[1
]}

Hsu, CH ^{[1
]}

Hsieh, YW ^{[1
]}

Canteenwala, T ^{[1
]}

Chiang, LY ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30043, Taiwan

来源：

TRENDS IN COLLOID AND INTERFACE SCIENCE XV | 2001年 / 118卷

关键词：

small-angle X-ray scattering; water-soluble fullerene derivatives; aggregation;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We study the aggregation behavior of two highly water-soluble fullerene derivatives, hexa(sulfobutyl)fullerenes (FC4S) and polyhydroxylated fullerenes (fullerenols) [C-60(OH)(18)] using small-angle x-ray scattering. We found that FC4S forms spheroidal aggregates having a similar radius of gyration R-g approximate to 19 Angstrom, in a wide concentration range from 0.4 to 26 mM in water solutions, whereas the mean sizes observed for C-60(OH)(18) aggregates in water solutions grow nearly two-fold from R-g = 20 Angstrom to R-g = 40 Angstrom as the concentration increases from 0.7 to 50 mM. The implication of the structural differences between the two fullerene derivatives on their free-radical scavenging activity is discussed.

引用

页码：232 / 237

页数：6

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