Supramolecular switching between flat sheets and helical tubules triggered by coordination interaction

Suyong Shin, Sunhee Lim, Yongju Kim, Taehoon Kim, Tae Lim Choi, Myongsoo Lee

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Here we report the spontaneous formation of switchable sheets in aqueous solution, which is based on bent-shaped aromatic amphiphiles containing m-pyridine units at the terminals and a hydrophilic dendron at the apex. The aromatic segments self-assemble into flat sheets consisting of a zigzag conformation through π-π stacking interactions. Notably, the sheets reversibly transform into helical tubules at higher concentration and into discrete dimeric macrocycles at a lower concentration in response to Ag(I) ions through reversible coordination interactions between the pyridine units of the aromatic segments and the Ag(I) ions. While maintaining the coordination bonding interactions, the helical tubules reversibly transform into the dimeric macrocycles in response to the variation in concentration.

Original languageEnglish
Pages (from-to)2156-2159
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number6
DOIs
Publication statusPublished - 2013 Feb 13
Externally publishedYes

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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