聚-L-酪氨酸修饰的单壁碳纳米管在水中的分散
Dispersion of single-walled carbon nanotubes modified with poly-l-tyrosine in water.
作者信息
Kojima Mio, Chiba Tomoka, Niishima Junichiro, Higashi Toshiaki, Fukuda Takahiro, Nakajima Yoshikata, Kurosu Shunji, Hanajiri Tatsuro, Ishii Koji, Maekawa Toru, Inoue Akira
机构信息
Bio-Nano Electronics Research Centre, Toyo University 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan.
出版信息
Nanoscale Res Lett. 2011 Feb 10;6(1):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 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.
在本研究中，制备了由聚-L-酪氨酸（pLT）和单壁碳纳米管（SWCNT）组成的复合物，并通过测量复合物的ζ电位和溶液的浊度来研究pLT/SWCNT复合物在水中的分散性。结果发现，pLT/SWCNT复合物的ζ电位绝对值与用双链DNA（dsDNA）修饰的SWCNT的ζ电位绝对值一样高，并且该复合物在水中至少能稳定分散两周。还进行了热重分析（TGA）以及使用原子力显微镜（AFM）对pLT/SWCNT复合物表面结构的可视化分析。
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