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Dispersion of single-walled carbon nanotubes modified with poly-l-tyrosine in water.


ABSTRACT: In this study, complexes composed of poly-l-tyrosine (pLT) and single-walled carbon nanotubes (SWCNTs) were produced and the dispersibility of the pLT/SWCNT complexes in water by measuring the ? potential of the complexes and the turbidity of the solution were investigated. It is found that the absolute value of the ? potential of the pLT/SWCNT complexes is as high as that of SWCNTs modified with double-stranded DNA (dsDNA) and that the complexes remain stably dispersed in the water at least for two weeks. Thermogravimetry analysis (TGA) and visualization of the surface structures of pLT/SWCNT complexes using an atomic force microscope (AFM) were also carried out.

SUBMITTER: Kojima M 

PROVIDER: S-EPMC3211174 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Dispersion of single-walled carbon nanotubes modified with poly-l-tyrosine in water.

Kojima Mio M   Chiba Tomoka T   Niishima Junichiro J   Higashi Toshiaki T   Fukuda Takahiro T   Nakajima Yoshikata Y   Kurosu Shunji S   Hanajiri Tatsuro T   Ishii Koji K   Maekawa Toru T   Inoue Akira A  

Nanoscale research letters 20110210 1


In this study, complexes composed of poly-l-tyrosine (pLT) and single-walled carbon nanotubes (SWCNTs) were produced and the dispersibility of the pLT/SWCNT complexes in water by measuring the ζ potential of the complexes and the turbidity of the solution were investigated. It is found that the absolute value of the ζ potential of the pLT/SWCNT complexes is as high as that of SWCNTs modified with double-stranded DNA (dsDNA) and that the complexes remain stably dispersed in the water at least for  ...[more]

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