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

  • U. -S. Jeng
  • T. -L. Lin
  • T. -S. Chang
  • H. -Y. Lee
  • C. -H. Hsu
  • Y. -W. Hsieh
  • T. Canteenwala
  • L. Y. Chiang
Conference paper
First Online:
Part of the Progress in Colloid and Polymer Science book series (PROGCOLLOID, volume 118)

Abstract

We study the aggregation behavior of two highly water-soluble fullerene derivatives, hexa(sulfobutyl) fullerenes (FC4S) and polyhydroxylated fullerenes (fullerenols) [C60(OH)18] using small-angle x-ray scattering. We found that FC4S forms spheroidal aggregates having a similar radius of gyration Rg ≈ 19 A, in a wide concentration range from 0.4 to 26 mM in water solutions, whereas the mean sizes observed for C60(OH)18 aggregates in water solutions grow nearly two fold from R g = 20 A to R g = 40 A 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.

Key words

Small-angle X-ray scattering Water-soluble fullerene derivatives Aggregation 
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Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • U. -S. Jeng
    • 1
  • T. -L. Lin
    • 1
  • T. -S. Chang
    • 1
  • H. -Y. Lee
    • 2
  • C. -H. Hsu
    • 2
  • Y. -W. Hsieh
    • 2
  • T. Canteenwala
    • 3
  • L. Y. Chiang
    • 3
  1. 1.Department of Engineering and SystemScience, National Tsing Hua UniversityHsinchuTaiwan
  2. 2.Synchrotron Radiation Research CenterHsinchuTaiwan
  3. 3.Center for Condensed Matter SciencesNational Taiwan UniversityTaipeiTaiwan

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