A Dual-Thermoresponsive Gemini-Type Supra-amphiphilic Macromolecular [3]Pseudorotaxane Based on Pillar[10]arene/Paraquat Cooperative Complexation

J Am Chem Soc. 2016 Mar 9;138(9):3168-74. doi: 10.1021/jacs.5b13173. Epub 2016 Feb 24.

Abstract

Herein, first we report the preparation of a thermoresponsive [3]pseudorotaxane from cooperative complexation between a water-soluble pillar[10]arene and a paraquat derivative in water. Then we successfully construct the first pillararene-based gemini-type supra-amphiphilic [3]pseudorotaxane from the water-soluble pillar[10]arene and a paraquat-containing poly(N-isopropylacrylamide) based on this new molecular recognition motif in water. This macromolecular [3]pseudorotaxane shows unique dual-thermoresponsiveness. Furthermore, it can self-assemble into polymeric vesicles at 37 °C in water. These vesicles can be further used in the controlled release of small molecules induced by cooling to 25 °C or heating to 60 °C.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acrylic Resins / chemistry
  • Coordination Complexes / chemical synthesis
  • Coordination Complexes / chemistry
  • Hydrophobic and Hydrophilic Interactions
  • Macromolecular Substances / chemical synthesis
  • Macromolecular Substances / chemistry*
  • Paraquat / chemistry*
  • Rotaxanes / chemical synthesis
  • Rotaxanes / chemistry*
  • Surface-Active Agents / chemical synthesis
  • Surface-Active Agents / chemistry*
  • Temperature

Substances

  • Acrylic Resins
  • Coordination Complexes
  • Macromolecular Substances
  • Rotaxanes
  • Surface-Active Agents
  • poly-N-isopropylacrylamide
  • Paraquat