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Highly ordered in-plane orientation of single-walled carbon nanotubes

LU JIA1,2, YAFEI ZHANG2,* , JINYONG LI2, CHANG YOU2, ERQING XIE1

Affiliation

  1. Institute of Electronic Materials, School of Physics, Lanzhou University, Lanzhou 730000, PR China
  2. Research Institute of Micro/Nanometer Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, PR China

Abstract

Single-walled carbon nanotubes (SWNTs) were functionalized with amphiphilic octadecylamine (ODA), and the solubility of SWNTs in chloroform was largely enhanced. The surface pressure-area isotherm indicated good spreading properties of functionalized SWNTs. According to scanning electron microscopy (SEM) images, highly ordered in-plane orientation of SWNT films was achieved by Langmuir–Blodgett (LB) technique at room temperature. The distance between the aligned SWNTs decreased with increasing surface pressure. Homogeneous multilayers were obtained via layer-by-layer deposition. The current-voltage (I-V) characteristics of multilayer films were investigated, in which the SWNTs were aligned perpendicularly and parallel to the electrodes, respectively..

Keywords

Single-walled carbon nanotube; Langmuir–Blodgett film; SEM; Current-voltage curve.

Submitted at: March 12, 2008
Accepted at: Oct. 7, 2008

Citation

LU JIA, YAFEI ZHANG, JINYONG LI, CHANG YOU, ERQING XIE, Highly ordered in-plane orientation of single-walled carbon nanotubes, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2743-2747 (2008)