Covalently linked deoxyribonucleic acid with multiwall carbon nanotubes: Synthesis and characterization

被引:17
作者
Chen, WW
Tzang, CH
Tang, JX
Yang, MS
Lee, ST [1 ]
机构
[1] City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
[3] City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R China
关键词
D O I
10.1063/1.1880439
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have developed a multistep method to covalently link functionalized multiwall carbon nanotubes (MWNT) to deoxyribonucleic acid (DNA) oligonucleotides. X-ray photoelectron spectroscopy was used to characterize the initial chemical modification to form amine-terminated MWNTs, which were then covalently combined with DNA. The morphology recorded by atomic force microscopy gave direct and explicit imaging of,the resulting DNA-MWNT adducts, showing that chemical functionalization occurred at the ends and sidewalls of MWNTs. The present methodology is an important first step in realizing a DNA-guided self-assembly process for carbon nanotubes. (c). 2005 American Institute of Physics.
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页码:1 / 3
页数:3
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