Red Light-Driven, Oxygen-Tolerant RAFT Polymerization Enabled by Methylene Blue.

ABSTRACT: Photoinduced reversible-deactivation radical polymerization (photoRDRP) techniques enable the synthesis of well-defined polymers under mild conditions. However, oxygen inhibition remains a key challenge, requiring either complex deoxygenation methods or in situ oxygen-scavenging strategies. Here, we report a red light-driven, fully oxygen-tolerant reversible addition-fragmentation chain transfer (RAFT) polymerization mediated by methylene blue (MB⁺) as a photosensitizer and triethanolamine (TEOA) as an electron donor. This operationally simple method enables polymerization in fully open-to-air vials without stirring, even under direct sunlight, underscoring the robustness and accessibility of the system. Using MB⁺ in the presence of a sacrificial electron donor

SUBMITTER: Trachsel L 

PROVIDER: S-EPMC12412174 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature