期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 49, 页码 17690-17694出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201911631
关键词
encapsulation; fullerenes; open-cage structures; oxygen delivery; peroxide
资金
- NNSFC [21672009, 21871015]
- MOST [2015CB856600]
Open-cage fullerenes with a 19-membered orifice were prepared in three steps from C-60. The key step for cage-opening is aniline mediated ring expansion of a fullerene-mixed peroxide with a ketolactone moiety on the orifice. Release of ring strain on the spherical fullerene cage served as the main driving force for the efficient cage-opening sequence. Encapsulation of oxygen could be achieved at room temperature under moderate pressure (50 atm) and the encapsulated oxygen could be released slowly under ambient conditions. The activation energy of the oxygen-releasing process is 18.8 kcal mol(-1) and the half-life at 37 degrees C was 73 min, which makes this open-cage fullerene derivative a potential oxygen-delivery material.
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