Unusually high dispersion of nitrogen-doped carbon nanotubes in DNA solution

Jin Hee Kim; Masakazu Kataoka; Kazunori Fujisawa; Tomohiro Tojo; Hiroyuki Muramatsu; Sofía M. Vega-Díaz; F. Tristán-López; Takuya Hayashi; Yoong Ahm Kim; Morinobu Endo; Mauricio Terrones; Mildred S. Dresselhaus

doi:10.1021/jp205387y

Unusually high dispersion of nitrogen-doped carbon nanotubes in DNA solution

Jin Hee Kim, Masakazu Kataoka, Kazunori Fujisawa, Tomohiro Tojo, Hiroyuki Muramatsu, Sofía M. Vega-Díaz, F. Tristán-López, Takuya Hayashi, Yoong Ahm Kim, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The dispersibility in a DNA solution of bundled multiwalled carbon nanotubes (MWCNTs), having different chemical functional groups on the CNT sidewall, was investigated by optical spectroscopy. We observed that the dispersibility of nitrogen (N)-doped MWCNTs was significantly higher than that of pure MWCNTs and MWCNTs synthesized in the presence of ethanol. This result is supported by the larger amount of adsorbed DNA on N-doped MWCNTs, as well as by the higher binding energy established between nucleobases and the N-doped CNTs. Pure MWCNTs are dispersed in DNA solution via van der Waals and hydrophobic interactions; in contrast, the nitrogenated sites within N-doped MWCNTs provided additional sites for interactions that are important to disperse nanotubes in DNA solutions.

Original language	English (US)
Pages (from-to)	14295-14300
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	115
Issue number	48
DOIs	https://doi.org/10.1021/jp205387y
State	Published - Dec 8 2011

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1021/jp205387y

Cite this

@article{c894cdf9f25b472ea74e689f14db9534,

title = "Unusually high dispersion of nitrogen-doped carbon nanotubes in DNA solution",

abstract = "The dispersibility in a DNA solution of bundled multiwalled carbon nanotubes (MWCNTs), having different chemical functional groups on the CNT sidewall, was investigated by optical spectroscopy. We observed that the dispersibility of nitrogen (N)-doped MWCNTs was significantly higher than that of pure MWCNTs and MWCNTs synthesized in the presence of ethanol. This result is supported by the larger amount of adsorbed DNA on N-doped MWCNTs, as well as by the higher binding energy established between nucleobases and the N-doped CNTs. Pure MWCNTs are dispersed in DNA solution via van der Waals and hydrophobic interactions; in contrast, the nitrogenated sites within N-doped MWCNTs provided additional sites for interactions that are important to disperse nanotubes in DNA solutions.",

author = "Kim, {Jin Hee} and Masakazu Kataoka and Kazunori Fujisawa and Tomohiro Tojo and Hiroyuki Muramatsu and Vega-D{\'i}az, {Sof{\'i}a M.} and F. Trist{\'a}n-L{\'o}pez and Takuya Hayashi and Kim, {Yoong Ahm} and Morinobu Endo and Mauricio Terrones and Dresselhaus, {Mildred S.}",

year = "2011",

month = dec,

day = "8",

doi = "10.1021/jp205387y",

language = "English (US)",

volume = "115",

pages = "14295--14300",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

number = "48",

}

TY - JOUR

T1 - Unusually high dispersion of nitrogen-doped carbon nanotubes in DNA solution

AU - Kim, Jin Hee

AU - Kataoka, Masakazu

AU - Fujisawa, Kazunori

AU - Tojo, Tomohiro

AU - Muramatsu, Hiroyuki

AU - Vega-Díaz, Sofía M.

AU - Tristán-López, F.

AU - Hayashi, Takuya

AU - Kim, Yoong Ahm

AU - Endo, Morinobu

AU - Terrones, Mauricio

AU - Dresselhaus, Mildred S.

PY - 2011/12/8

Y1 - 2011/12/8

N2 - The dispersibility in a DNA solution of bundled multiwalled carbon nanotubes (MWCNTs), having different chemical functional groups on the CNT sidewall, was investigated by optical spectroscopy. We observed that the dispersibility of nitrogen (N)-doped MWCNTs was significantly higher than that of pure MWCNTs and MWCNTs synthesized in the presence of ethanol. This result is supported by the larger amount of adsorbed DNA on N-doped MWCNTs, as well as by the higher binding energy established between nucleobases and the N-doped CNTs. Pure MWCNTs are dispersed in DNA solution via van der Waals and hydrophobic interactions; in contrast, the nitrogenated sites within N-doped MWCNTs provided additional sites for interactions that are important to disperse nanotubes in DNA solutions.

AB - The dispersibility in a DNA solution of bundled multiwalled carbon nanotubes (MWCNTs), having different chemical functional groups on the CNT sidewall, was investigated by optical spectroscopy. We observed that the dispersibility of nitrogen (N)-doped MWCNTs was significantly higher than that of pure MWCNTs and MWCNTs synthesized in the presence of ethanol. This result is supported by the larger amount of adsorbed DNA on N-doped MWCNTs, as well as by the higher binding energy established between nucleobases and the N-doped CNTs. Pure MWCNTs are dispersed in DNA solution via van der Waals and hydrophobic interactions; in contrast, the nitrogenated sites within N-doped MWCNTs provided additional sites for interactions that are important to disperse nanotubes in DNA solutions.

UR - http://www.scopus.com/inward/record.url?scp=82555184011&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=82555184011&partnerID=8YFLogxK

U2 - 10.1021/jp205387y

DO - 10.1021/jp205387y

M3 - Article

C2 - 22011214

AN - SCOPUS:82555184011

SN - 1520-6106

VL - 115

SP - 14295

EP - 14300

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 48

ER -

Unusually high dispersion of nitrogen-doped carbon nanotubes in DNA solution

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this