Room-temperature, open-air, wet intercalation of liquids, surfactants, polymers and nanoparticles within nanotubes and microchannels

Alexander V. Bazilevsky, Kexia Sun, Alexander L. Yarin, Constantine M. Megaridis

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

This study aims to encapsulate polymers, surfactants and nanoparticles from solutions or suspensions in open-ended carbon nanotubes and glass microchannels. The work also demonstrates a novel method of capping water-filled carbon nanotubes using polymer seals of relatively small polymer molecules. The self-sustained diffusion mechanism driving admixtures from solutions into carbon nanotubes, as reported in A. V. Bazilevsky, K. Sun, A. L. Yarin and C. M. Megaridis, Langmuir, 2007, 23, 7451-7455, is shown to be effective for encapsulating a number of compounds in confinements spanning sizes from 50 nm-diameter carbon nanotubes to 300 μm-diameter glass capillaries. For example, surfactants and nanoparticles are encapsulated using this self-sustained diffusion mechanism. Very high filling efficiencies can be achieved with this method. The procedure opens new opportunities for water containment in nanotubes and microchannels. Nanoparticles filling microchannels form colloidal crystals, which, upon illumination, demonstrate opalescence characteristics of long columnar photonic crystals.

Original languageEnglish
Pages (from-to)696-702
Number of pages7
JournalJournal of Materials Chemistry
Volume18
Issue number6
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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