Ion Pair Recognition Based Supramolecular Polymer Showing Rapid and Reversible Sol-Gel Transition through van der Waals Interactions

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Amharar S., Atsay A., Aydoğan A.

ACS APPLIED POLYMER MATERIALS, vol.2, no.12, pp.5371-5376, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 2 Issue: 12
  • Publication Date: 2020
  • Doi Number: 10.1021/acsapm.0c01210
  • Journal Name: ACS APPLIED POLYMER MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Emerging Sources Citation Index (ESCI), Scopus
  • Page Numbers: pp.5371-5376
  • Istanbul Technical University Affiliated: Yes

Abstract

Ion pair receptors have shown potential in controllable recognition of cations and anions simultaneously, which has made a vital contribution to various research fields. Herein, rationally designed ion pairs were integrated into a calix[4]pyrrole skeleton, resulting in the formation of an ion pair recognition based linear supramolecular polymer. The effect of simultaneous hostguest and cation-pi interactions between carboxylate-functionalized calix[4]pyrrole and cetyltrimethylammonium was investigated by nuclear magnetic resonance spectroscopy, viscosity measurements, scanning electron microscopy, and differential scanning calorimetry. The resulting supramolecular polymer was found to show temperature-induced rapid and reversible sol-gel transition through v an der Waals interactions of cetyl units.