Single molecular orientation switching of an endohedral metallofullerene.
Single molecular orientation switching of an endohedral metallofullerene.
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DOI：
10.1021/nl050490z
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发表时间：
2005-05
期刊：
影响因子：
10.8
通讯作者：
Yuhsuke Yasutake;Zujin Shi;T. Okazaki;H. Shinohara;Y. Majima
中科院分区：
文献类型：
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作者：
Yuhsuke Yasutake;Zujin Shi;T. Okazaki;H. Shinohara;Y. Majima
利用低温超高真空扫描隧道显微镜（STM）研究了Tb@C82内嵌金属富勒烯的单分子取向转变。在Tb@C82和Au 111衬底之间引入了一个正辛烷乙基醚自组装单层膜（SAM）来控制Tb@C82的热旋转状态。扫描隧道光谱（STS）的Tb@C82上的辛烷乙撑SAM在13 K表现出滞后，包括负微分电导（NDC）。这种观察到的滞后和NDC可以用Tb@C82分子取向的切换来解释，该切换是由其电偶极矩与外部电场之间的相互作用引起的。
The single molecular orientation switching of the Tb@C82 endohedral metallofullerene has been studied by using low-temperature ultrahigh vacuum (UHV) scanning tunneling microscopy (STM). An octanethiol self-assembled monolayer (SAM) was introduced between Tb@C82 and the Au111 substrate to control the thermal rotational states of Tb@C82. Scanning tunneling spectroscopy (STS) of Tb@C82 on an octanethiol SAM at 13 K demonstrated hysteresis including negative differential conductance (NDC). This observed hysteresis and NDC is interpreted in terms of a switching of the Tb@C82 molecular orientation caused by the interaction between its electric dipole moment and an external electric field.