Reaction of Water-Stable C60 aggregates with ozone
Reaction of Water-Stable C60 aggregates with ozone
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DOI：
10.1021/es0708058
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发表时间：
2007-11-01
影响因子：
11.4
通讯作者：
Kim, Jae-Hong
中科院分区：
文献类型：
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作者：
Fortner, John D.;Kim, Doo-IL;Kim, Jae-Hong
虽然C-60在各种有机溶剂中的反应性已被描述，但由于溶解度的限制，关于水基反应的信息很少。在本研究中，研究了碳-60作为纳米悬浮液与溶解臭氧在水相中的反应。研究结果表明，发生了一个简单的反应，导致聚集体溶解同时形成水溶性氧化富勒烯。产品分析，包括C-13 NMR， MS (LDI)， FTIR， UV-Vis和XPS，表明高度氧化的富勒烯平均每个分子有29个类似的氧添加，排列在重复的羟基和半晶状官能团中。这些发现是重要的，因为它们(1)证明了其他水基富勒烯化学物质的可行性，包括那些替代合成路线，否则可能被认为是禁止的，基于溶解度限制，(2)意味着富勒烯基材料的水反应性必须适当考虑，以准确评估其在环境系统中的运输，命运和潜在风险。
While the reactivity of C-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-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 watersoluble fullerene oxide species. Product analyses, including C-13 NMR, MS (LDI), FTIR, UV-Vis, and XPS, indicate highly oxidized fullerene with an average of similar to 29 oxygen additions per molecule, arranged in repeating hydroxyl and hemiketal functionalities. These findings are significant in that they (1) 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.