Skákalová V, Kaiser A B, Dettlaff-Weglikowska U, Hrncariková K, Roth S
Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany.
J Phys Chem B. 2005 Apr 21;109(15):7174-81. doi: 10.1021/jp044741o.
We investigate the magnitude and temperature dependence of electrical conductivity, the optical and infrared absorption, and the Raman spectra of single-walled carbon nanotube (SWNT) bucky-paper after chemical treatment and determine the correlations between the changes in these properties. Ionic-acceptor doping of the SWNT bucky-paper (with SOCl(2), iodine, H(2)SO(3), etc.) causes an increase of electrical conductivity that correlates with an increase of the absorbance in the far-IR region and an increase in the frequency of Raman spectral lines. Conversely, treatment with other molecules (e.g., aniline, PyPhF(5), PhCH(2)Br, etc.) leads to a decrease in both conductivity and far-IR absorption. The temperature dependence of the conductivity gives a good indication of the presence of metallic charge carriers and is in agreement with the model of interrupted metallic conduction.
我们研究了化学处理后单壁碳纳米管（SWNT）巴基纸的电导率、光学和红外吸收以及拉曼光谱的大小和温度依赖性，并确定了这些性质变化之间的相关性。SWNT巴基纸的离子受体掺杂（用SOCl₂、碘、H₂SO₃等）导致电导率增加，这与远红外区域吸光度的增加以及拉曼光谱线频率的增加相关。相反，用其他分子（如苯胺、PyPhF₅、PhCH₂Br等）处理会导致电导率和远红外吸收均降低。电导率的温度依赖性很好地表明了金属电荷载流子的存在，并且与中断金属传导模型一致。
