title: 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 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 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.
authors.affiliation: Bio-Nano Electronics Research Centre, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan. maekawa@toyo.jp.
authors.forename: Mio
authors.initials: M
authors.lastname: Kojima
authors.forename: Tomoka
authors.initials: T
authors.lastname: Chiba
authors.forename: Junichiro
authors.initials: J
authors.lastname: Niishima
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Higashi
authors.forename: Takahiro
authors.initials: T
authors.lastname: Fukuda
authors.forename: Yoshikata
authors.initials: Y
authors.lastname: Nakajima
authors.forename: Shunji
authors.initials: S
authors.lastname: Kurosu
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Hanajiri
authors.forename: Koji
authors.initials: K
authors.lastname: Ishii
authors.forename: Toru
authors.initials: T
authors.lastname: Maekawa
authors.forename: Akira
authors.initials: A
authors.lastname: Inoue