Pillararene-Based Two-Component Thixotropic Supramolecular Organogels: Complementarity and Multivalency as Prominent Motifs

Yossi Zafrani, Dana Kaizerman, Maya Hadar, Nitzan Bigan, Eran Granot, Moumita Ghosh, Lihi Adler-Abramovich, Fernando Patolsky, Yoram Cohen

Research output: Contribution to journalArticlepeer-review

Abstract

Rationally designed two-component supramolecular organogels based on multiple chemical interactions between percarboxylato- and peramino-pillararenes are described. Mixing low concentration solutions (<1 % w/v) of decacarboxylato-pillar[5]arene (1) with decaamino-pillar[5]arenes (2 b–d) affords, rapidly and without heating, organogels displaying an exceptional combination of properties. These supramolecular organogels, the characteristics of which are tunable, were found to be thixotropic and thermally stable, with Tgel values in some cases exceeding the boiling point of the embedded solvent. It is demonstrated that both structural complementarity and multivalency are important determinants in the gelation process of these attractive soft materials.

Original languageEnglish
Pages (from-to)15750-15755
Number of pages6
JournalChemistry - A European Journal
Volume24
Issue number59
DOIs
StatePublished - 22 Oct 2018

Keywords

  • multivalency
  • organogels
  • pillararenes
  • self-assembly
  • thixotropy

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