TY - JOUR
T1 - Versatile control of carbon nanotube semiconducting properties by DNA encapsulation using electrolyte plasmas
AU - Kaneko, Toshiro
AU - Hatakeyama, Rikizo
PY - 2009/12
Y1 - 2009/12
N2 - Electrical properties of semiconducting single-walled carbon nanotubes (SWNTs) are controlled by encapsulating DNA into their inner nano-spaces using an ion irradiation method in electrolyte plasmas. Especially, DNA with guanine can drastically change the p-type characteristic of pristine SWNTs into the n-type characteristic, while DNA with cytosine just enhances the p-type characteristic. By measuring ultraviolet photoelectron spectra of SWNTs and DNA, it is clarified that the ionization potential of SWNTs is larger than that of DNA with guanine. This difference causes the charge transfer from DNA to SWNTs, resulting in the n-type semiconducting properties of the guanine encapsulated SWNTs.
AB - Electrical properties of semiconducting single-walled carbon nanotubes (SWNTs) are controlled by encapsulating DNA into their inner nano-spaces using an ion irradiation method in electrolyte plasmas. Especially, DNA with guanine can drastically change the p-type characteristic of pristine SWNTs into the n-type characteristic, while DNA with cytosine just enhances the p-type characteristic. By measuring ultraviolet photoelectron spectra of SWNTs and DNA, it is clarified that the ionization potential of SWNTs is larger than that of DNA with guanine. This difference causes the charge transfer from DNA to SWNTs, resulting in the n-type semiconducting properties of the guanine encapsulated SWNTs.
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U2 - 10.1143/APEX.2.127001
DO - 10.1143/APEX.2.127001
M3 - Article
AN - SCOPUS:73149091022
SN - 1882-0778
VL - 2
JO - Applied Physics Express
JF - Applied Physics Express
IS - 12
M1 - 127001
ER -