Reaction of Water-Stable C^sub 60^ Aggregates with Ozone

While the reactivity of C^sub 60^ has been described in a variety of organic solvents, little information is available regarding aqueous-based reactions due to solubility limitations. In this study, a reaction between C^sub 60^, as a nanoscale suspension, and dissolved ozone in the aqueous phase was...

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Bibliographic Details
Published in:Environmental science & technology 2007-11, Vol.41 (21), p.7497
Main Authors: tner, John D, Kim, Doo-Il, Boyd, Adina M, Falkner, Joshua C, Moran, Sean, Colvin, Vicki L, Hughes, Joseph B, Kim, Jae-Hong
Format: Article
Language:English
Subjects:
Aqueous solutions
Fullerenes
Ozone
Risk
Solvents
Studies
Online Access:Get full text
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Summary:While the reactivity of C^sub 60^ has been described in a variety of organic solvents, little information is available regarding aqueous-based reactions due to solubility limitations. In this study, a reaction between C^sub 60^, as a nanoscale suspension, and dissolved ozone in the aqueous phase was investigated. Findings indicate a facile reaction occurs, resulting in aggregate dissolution concurrent with formation of water-soluble fullerene oxide species. Product analyses, including ^sup 13^C NMR, MS (LDI), FTIR, UV-Vis, and XPS, indicate highly oxidized fullerene with an average of ~29 oxygen additions per molecule, arranged in repeating hydroxyl and hemiketal functionalities. These findings are significant in that they demonstrate the feasibility of other aqueous-based fullerene chemistries, including those for alternative synthesis routes, which might otherwise be considered prohibitive on the basis of solubility limitations, and (2) imply that the aqueous reactivity of fullerene-based materials must be considered appropriately for accurate assessment of their transport, fate, and potential risk(s) in environmental systems. [PUBLICATION ABSTRACT]
ISSN:0013-936X