Water-Soluble Squaramide-Functionalized Copolymers for Anion Recognition.

ABSTRACT: A series of ethylene glycol-based squaramide-containing copolymers are synthesized via a post-polymerization functionalization strategy. Conversion of polymeric amines to squaramides is found to proceed in good yields, representing a versatile method of incorporating squaramides into polymers for anion recognition. Analysis of the polymers by UV-Vis and fluorescence spectroscopy revealed that anion binding takes place similarly to that of small-molecule squaramides. The presence of a fluorescent sensing group on polymer-bound squaramides allowed for a fluorescent sensing mechanism for anions that followed a similar trend in selectivity in aqueous DMSO solution, with selectivity observed for H₂PO₄ ^-, AcO^- and SO₄ ^2- over othe

SUBMITTER: Lane JDE 

PROVIDER: S-EPMC12004901 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature