| 초록 |
Polyethers such as poly(ethylene glycol) (PEG) have been widely used for a variety of valuable applications, but functionalization of polyethers is still poses a challenge due to the absence of functional handles along the polymer backbone. Herein, a novel azide-functional glycidyl ether monomer is presented as a universal approach to synthesize functional polyethers by postpolymerization modification strategy. Organic superbase-catalyzed anionic ring-opening polymerization could proceed under mild conditions compatible with an azide-pendant group, affording well-controlled azide-functional polyethers in a high monomer conversion. The azide pendant groups on the resulting polymers were readily modified to a variety of functional groups via Staudinger reduction or copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. Partially reduced polymers are prepared by controlling equivalency of triphenyl phosphine, providing orthogonal handles to be modified. |
