An in situ Raman spectroelectrochemical study of the controlled doping of semiconducting single walled carbon nanotubes in a conducting polymer matrix
An in situ Raman spectroelectrochemical study of the controlled doping of semiconducting single walled carbon nanotubes in a conducting polymer matrix
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DOI：
10.1016/j.synthmet.2009.07.059
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发表时间：
2009-11-01
期刊：
影响因子：
4.4
通讯作者：
Dunsch, Lothar
中科院分区：
文献类型：
--
作者：
Kalbac, Martin;Kavan, Ladislav;Dunsch, Lothar
用拉曼光谱和原位拉曼光谱电化学方法研究了半导体单壁碳纳米管与导电聚合物poly(3，4-ethylendioxythiophene/polystyrenesulfonate)的相互作用。SWCNT和PEDOT/PSS的混合导致了SWCNT的部分掺杂，这从SWCNT的拉曼特征的相对强度的变化可以看出。原位拉曼光谱电化学测试表明，即使半导体管被嵌入到PEDOT/PSS中，也可以实现掺杂。然而，与整齐的单壁碳纳米管相比，单壁碳纳米管在复合材料中的掺杂效率较低。对于复合材料中的单壁碳纳米管，有必要施加更大的电压(约0.4-0.6V)，以实现与整齐的单壁碳纳米管相同的拉曼光谱漂白水平。(C)2009爱思唯尔B.V.保留所有权利。
The interaction of semiconducting single wall carbon nanotubes (SWCNT) and the conducting polymer poly(3,4-ethylendioxythiophene/polystyrenesulfonate) (PEDOT/PSS) was studied by Raman spectroscopy and in-situ Raman spectroelectrochemistry. The mixing of SWCNT with PEDOT/PSS caused a partial doping of SWCNT as indicated by the change of the relative intensity of the Raman features of SWCNT. The in situ Raman spectroelectrochemical measurements showed that semiconducting tubes could be doped even if they are embedded in PEDOT/PSS. However, in contrast to the neat SWCNT, the doping of SWCNT in composite is less efficient. For SWCNT in composite it is necessary to apply larger potential (by about 0.4-0.6V) to achieve the same level of bleaching of Raman bands as in the case of neat SWCNT. (C) 2009 Elsevier B.V. All rights reserved.