Synthesis and Characterization of Eu-Metallofullerenes from Eu@C74 to Eu@C90 and Their Nanopeapods
Synthesis and Characterization of Eu-Metallofullerenes from Eu@C74 to Eu@C90 and Their Nanopeapods
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DOI：
10.1021/jp049130a
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发表时间：
2004-06
影响因子：
3.3
通讯作者：
Bao-Yun Sun;Takashi Inoue;T. Shimada;T. Okazaki;T. Sugai;K. Suenaga;H. Shinohara
中科院分区：
文献类型：
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作者：
Bao-Yun Sun;Takashi Inoue;T. Shimada;T. Okazaki;T. Sugai;K. Suenaga;H. Shinohara
成功地合成了Eu@C74 ~ Eu@C90系列铕金属富勒烯，并通过多步高效液相色谱分离得到了它们。为了提高铕金属富勒烯的产率，我们采用了掺杂镍的复合棒作为阳极。所有新分离的金属富勒烯的特征在于LD-TOF质谱，UV-vis-NIR吸收光谱，和电子能量损失光谱。我们还合成了包裹Eu@C82富勒烯的纳米胶囊，并用HRTEM对其进行了表征。结果表明，在完整的Eu@C82金属富勒烯中，包埋的Eu原子具有二价电荷态.
A series of Eu-metallofullerenes from Eu@C74 to Eu@C90 have been successfully synthesized and isolated by multistep HPLC separation. We have used composite rods doped with nickel as the anode to improve the yield of europium metallofullerenes. All the newly isolated metallofullerenes are characterized by LD-TOF mass spectrometry, UV-vis-NIR absorption spectroscopy, and electron energy loss spectroscopy. We have also synthesized the nanopeapods encapsulating Eu@C82 fullerenes and characterized them with HRTEM. The results show that the entrapped Eu atoms have a divalent charge state in the intact Eu@C82 metallofullerene.