Hybrid Poly (β ‐amino ester) Triblock Copolymers Utilizing a RAFT Polymerization Grafting‐From Methodology

Abstract: The biocompatibility, biodegradability, and responsiveness of poly (β‐amino esters) (PBAEs) has led to their widespread use as biomaterials for drug and gene delivery. Nonetheless, the step‐growth polymerization mechanism that yields PBAEs limits the scope for their structural optimization toward specific applications because of limited monomer choice and end‐group modifications. Moreover, to date the post‐synthetic functionalization of PBAEs has relied on grafting‐to approaches, challenged by the need for efficient polymer–polymer coupling and potentially difficult post‐conjugation purification. Here a novel grafting‐from approach to grow reversible addition–fragmentation chain transfer (RAFT) polymers from a PBAE scaffold is described. This is achieved through PBAE conversion into a macromolecular chain transfer agent through a multistep capping procedure, followed by RAFT polymerization with a range of monomers to produce PBAE–RAFT hybrid triblock copolymers. Following successful synthesis, the potential biological applications of these ABA triblock copolymers are illustrated through assembly into polymeric micelles and encapsulation of a model hydrophobic drug, followed by successful nanoparticle (NP) uptake in breast cancer cells. The findings demonstrate this novel synthetic methodology can expand the scope of PBAEs as biomaterials.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Hybrid Poly (β ‐amino ester) Triblock Copolymers Utilizing a RAFT Polymerization Grafting‐From Methodology ; day:07 ; month:11 ; year:2023 ; extent:11
Macromolecular chemistry and physics ; (07.11.2023) (gesamt 11)

Creator
Kasza, Karolina
Elsherbeny, Amr
Moloney, Cara
Hardie, Kim R.
Cámara, Miguel
Alexander, Cameron
Gurnani, Pratik

DOI
10.1002/macp.202300262
URN
urn:nbn:de:101:1-2023110814070761496830
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:44 AM CEST

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Associated

  • Kasza, Karolina
  • Elsherbeny, Amr
  • Moloney, Cara
  • Hardie, Kim R.
  • Cámara, Miguel
  • Alexander, Cameron
  • Gurnani, Pratik

Other Objects (12)