Título
Diameter-selective separation of double-walled carbon nanotubes
11627/375511627/3755
Autor
Kim, Jin-hee
Kataoka, Masaskazu
Kim, Yoong Ahm
Shimamoto, Daisuke
Muramatsu, Hiroyukim
Hayashi, Takuya
Endo, Morinobu
Terrones Maldonado, Mauricio
Dresselhaus, Mildred
Resumen
"Here, we report a simple and effective way of separating double-walled carbon nanotubes as a function of their diameter using individually dispersed nanotube solutions with the aid of long and random single-stranded DNA. The subtle pHpH change in nanotube solutions gives rise to the preferential coagulation of large-diameter tubes and allows the easy preparation of small-diameter tubes. The stronger van der Waals forces between large-diameter tubes, combined with the decreased solubility of DNA in water at low pHpH, lead to the preferential agglomeration of large-diameter tubes."
Fecha de publicación
2008-12Tipo de publicación
articleDOI
http://dx.doi.org/10.1063/1.3039790Área de conocimiento
FÍSICAEditor
American Institute of PhysicsPalabras clave
Carbon nanotubesDisperse systems
DNA
pH
Phase separation
Solubility
Texture
Van der Waals forces