6533b7d6fe1ef96bd1267173
RESEARCH PRODUCT
Branched Acid-Degradable, Biocompatible Polyether Copolymers via Anionic Ring-Opening Polymerization Using an Epoxide Inimer
Carsten DingelsChristine TonhauserChristoph SchüllHolger Freysubject
Materials sciencePolymers and PlasticsEthylene oxideOrganic ChemistryGlycidolEpoxideRing-opening polymerizationInorganic Chemistrychemistry.chemical_compoundMonomerchemistryPolymerizationPolymer chemistryMaterials ChemistryCopolymerOrganic chemistryEthylene glycoldescription
The introduction of acid-degradable acetal moieties into a hyperbranched polyether backbone has been achieved by the design of a novel epoxide-based degradable inimer. This new monomer, namely, 1-(glycidyloxy)ethyl ethylene glycol ether (GEGE), has been copolymerized in the anionic ring-opening polymerization (AROP) with ethylene oxide (EO) or glycidol (G), respectively, yielding branched polyethers, that is, P(EO-co-GEGE) and P(G-co-GEGE), that possess an adjustable amount of acid-cleavable acetal units. In addition, a novel class of multiarm star copolymers P(G-co-GEGE-g-EO) with acid-labile polyether core and PEG side chains was synthesized by using the P(G-co-GEGE) copolymers as multifunctional macroinitiators for AROP of EO. The new materials have been characterized in a detailed manner, revealing narrow to moderate molecular weight distributions. The degradation of these polymers under acidic conditions was characterized via SEC and 1H NMR spectroscopy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-05-24 | ACS Macro Letters |