Bifunctional hydrophobic ionic liquids: facile synthesis by thiol–ene “click” chemistry

Abstract

We describe the facile, robust and orthogonal fabrication of a structurally comprehensive library of hydrophobic trimethoxysilyl-functionalized ionic liquids with C₇–C₁₅ thioether spacer, using thiol–ene “click” chemistry. The synthesized ionic liquids displayed very low glass transition temperatures, high thermal stability and were hydrophobic in character. And the ability to serve as surface coating agents was tested by immobilizing them on the surface of iron oxide supermagnetic nanoparticles and the organic loadings were quantified.