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

作者：Kojima Mio; Chiba Tomoka; Niishima Junichiro; Higashi Toshiaki; Fukuda Takahiro; Nakajima Yoshikata; Kurosu Shunji; Hanajiri Tatsuro; Ishii Koji; Maekawa Toru^*; Inoue Akira

来源：Nanoscale Research Letters, 2011, 6: 128.

DOI：10.1186/1556-276X-6-128

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 zeta potential of the complexes and the turbidity of the solution were investigated. It is found that the absolute value of the zeta 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.

• 出版日期2011