Doping of single-walled carbon nanotubes controlled via chemical transformation of encapsulated nickelocene
Doping of single-walled carbon nanotubes controlled via chemical transformation of encapsulated nickelocene
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DOI：
10.1039/c4nr05586a
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发表时间：
2015-01-01
期刊：
影响因子：
6.7
通讯作者：
Shiozawa, Hidetsugu
中科院分区：
文献类型：
--
作者：
Kharlamova, Marianna V.;Sauer, Markus;Shiozawa, Hidetsugu
碳纳米管的受控掺杂对于其电子应用是基本的。在这里，我们报告了一种方法来调整极性和程度的掺杂单壁碳纳米管通过填充与茂镍随后封装反应。利用拉曼光谱、光电子能谱和透射电子显微镜，我们发现茂镍分子在低至250 ℃的反应温度下转变为碳化镍、镍和内部碳纳米管。确定每种化学成分的掺杂效率。分子组分之间的同步电荷转移允许碳纳米管的双极掺杂在每个碳+/-0.0012 e（-）的宽范围内实现。
Controlled doping of carbon nanotubes is elemental for their electronic applications. Here we report an approach to tune the polarity and degree of doping of single-walled carbon nanotubes via filling with nickelocene followed by encapsulated reactions. Using Raman, photoemission spectroscopy and transmission electron microscopy, we show that nickelocene molecules transform into nickel carbides, nickel and inner carbon nanotubes with reaction temperatures as low as 250 degrees C. The doping efficiency is determined for each chemical component. Synchronous charge transfer among the molecular components allows bipolar doping of the carbon nanotubes to be achieved in a broad range of +/- 0.0012 e(-) per carbon.