Temperature-controlled, reversible, nanofiber assembly from an amphiphilic macrocycle

Ligui Li, Yanke Che, Dustin E. Gross, Helin Huang, Jeffrey S. Moore, Ling Zang

Research output: Contribution to journalArticle

Abstract

One-dimensional nanostructures are self-assembled from an amphiphilic arylene-ethynylene macrocycle (AEM) in solution phase. The morphology and size of the nanostructures are controlled by simply changing the temperature, reversibly switching between monomolecular cross-sectioned nanofibers and large bundles. At elevated temperature in aqueous solutions, the tri(ethylene glycol) (Tg) side chains of the AEM become effectively more hydrophobic, thus facilitating intermolecular association through side chain interactions. The enhanced intermolecular association causes the ultrathin nanofibers to be bundled, forming an opaque dispersion in solution. The reported observation provides a simple molecular design rule that may be applicable to other macrocycle molecules for use in temperature-controlled assembly regarding both size and morphology.

Original languageEnglish (US)
Pages (from-to)1335-1338
Number of pages4
JournalACS Macro Letters
Volume1
Issue number11
DOIs
StatePublished - Nov 30 2012

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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