Microstructure and electrochemical properties of single-walled carbon nanotubes-DNA hybrids

作者：Yang Liu Quan^*; Xiang Dong Ya; Yang Quan Hong; Zhao Zhuo

来源：New Carbon Materials, 2008, 23(1): 7-11.

• AFM observation
• Catalyst particles
• DNA complexes
• Self-assembly processes
• Single-walled carbon
• Single-walled carbon nanotubes (SWCNT)
• Specific capacitance
• Starting materials
• TEM images

The microstructure and electrochemical properties of hybrids, combining single-walled carbon nanotubes (SWCNTs) and DNA, were investigated. TEM images of the SWCNT-DNA hybrids show that most bundled SWCNTs in the starting materials are isolated into individual ones during the sonication-promoted self-assembly. AFM observation further indicates that the sidewalls of SWCNTs are helically wrapped by DNA, which results in stable SWCNT-DNA complexes. The catalyst particles are totally removed during this self-assembly process, thus the SWCNTs are also purified. The electrochemical properties of the SWCNTs are substantially improved due to the hybridization of DNA and the specific capacitance of the SWCNT-DNA hybrids is increased by of 117.9% compared to the parent SWCNTs.

• 出版日期2008
• 单位天津大学