Supramolecular Assembly of a Poly(ionic liquid) ABC Triblock Copolymer with Monovalent Halogen Bond Donors

Abstract

This study demonstrates the interplay between halogen bonds and π-π stacking in ionic block copolymers, which directs the formation of supramolecular assemblies with tunable nanoscale architectures. Using pentafluoroiodobenzene and nonafluoro-1-iodobutane as halogen bond donors, with chloride counter anions as halogen bond acceptors, the results reveal stoichiometry-dependent changes in self-assembly, confirmed by Nuclear Magnetic Resonance, Isothermal Titration Calorimetry, Dynamic Light Scattering, and microscopic analyses.