Generic Approach for Dispersing Single-Walled Carbon Nanotubes: The Strength of a Weak Interaction
2004; American Chemical Society; Volume: 20; Issue: 15 Linguagem: Inglês
10.1021/la049344j
ISSN1520-5827
AutoresRina Shvartzman-Cohen, Yael Levi‐Kalisman, Einat Nativ‐Roth, Rachel Yerushalmi‐Rozen,
Tópico(s)Force Microscopy Techniques and Applications
ResumoA generic noncovalent approach for dispersing high concentrations of individual single-walled carbon nanotubes (SWNT) in organic as well as aqueous solutions of synthetic block copolymers is presented. It is suggested that a weak, long-ranged entropic repulsion among polymer-decorated tubes acts as a barrier that prevents the tubes from approaching the attractive part of the intertube potential. The method opens a new route for utilization of block copolymers as compatibilizers for SWNT, improving the incorporation of de-agglomerated SWNT into target polymeric matrixes.
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