Controlled assembly of carbon nanotubes encapsulated with amphiphilic block copolymer

Chiyoung Park, Sanghwa Lee, Jung Ho Lee, Jino Lim, Sang Cheon Lee, Min Park, Sang Soo Lee, Junkyong Kim, Chong Rae Park, Chulhee Kim

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


An amphiphilic diblock copolymer (PEtOz-PCL) based on hydrophilic poly(2-ethyl-2-oxazoline) (PEtOz) and hydrophobic poly(ε-caprolactone) (PCL) was adsorbed in aqueous phase on the surface of single-wall carbon nanotube to produce PEtOz-PCL-encapsulated SWCNTs (PEtOz-PCL/SWCNT) with the diameter about 30 nm. The Raman spectroscopy analysis indicated that the nanotubes were physically encapsulated by the block copolymer without chemical denaturation of the nanotube. PEtOz-PCL/SWCNTs exhibited pH-responsive reversible complexation with poly(acrylic acid) or poly(methacrylic acid) in aqueous phase due to the pH-dependent hydrogen bonding between the PEtOz outer shell of PEtOz-PCL/SWCNTs with carboxyl groups. In addition, by using PEtOz as a template for the formation of metal nanoparticles, Au and Pd nanoparticles were successfully hybridized with PEtOz-PCL/SWCNTs.

Original languageEnglish
Pages (from-to)2072-2078
Number of pages7
Issue number10
Publication statusPublished - 2007 Sept

Bibliographical note

Funding Information:
This work was supported by Korea Research Foundation (2005-041-D00238). C.K. also thanks Core Technology Program of MOCIE, Korea.

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science


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