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在H_2O_2存在下,4-氨基-TEMPO加成到C_(60)上,经1,6-己二胺交联后,得到TEMPO功能化C_(60)聚合物(C_(60)-TEMPO-HDA).透射电子显微镜和扫描电子显微镜分析显示聚合物自组装成空心球结构.红外分析、电子自旋共振和X射线光电子能谱确认了氮氧自由基的存在.在醇的选择性氧化反应中,C_(60)-TEMPO-HDA催化剂不仅表现出高的催化活性,而且具有良好的循环稳定性,使用6次后,其活性和结构都没有明显改变.此外,这种合成方法具有一定的普适性,对4-氨基-吡啶和甘氨酸等带有氨基的有机分子也适用,为开发其他高效多相催化剂提供了一种新思路.
In the presence of H 2 O 2, 4-Amino-TEMPO was added to C 60 on a hexamethylenediamine cross-linked to obtain TEMPO functionalized C 60 polymer (C 60 60TEMPO-HDA ). Transmission electron microscopy and scanning electron microscopy analysis showed that the polymer self-assembled into a hollow sphere structure.Iron analysis, electron spin resonance and X-ray photoelectron spectroscopy confirm the presence of nitroxide radicals in the selective oxidation of alcohols , C_ (60) -TEMPO-HDA catalyst not only showed high catalytic activity, but also had good cyclic stability, and its activity and structure did not change significantly after 6 times of application.Furthermore, this synthesis method has a certain general Suitability for organic molecules with amino groups, such as 4-amino-pyridine and glycine, also provides a new idea for the development of other highly efficient heterogeneous catalysts.