Activating ATRP Initiators to Incorporate End-Group Modularity into Photo-RAFT Polymerization
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Open Access
Type
ArticleAbstract
Heterogeneous photocatalysis is increasingly used in reversible deactivation radical polymerization (RDRP). In this study, we found that alkyl bromide redox chemistry typically found in atom transfer radical polymerization (ATRP) can be incorporated in concert with dithiocarbonyl ...
See moreHeterogeneous photocatalysis is increasingly used in reversible deactivation radical polymerization (RDRP). In this study, we found that alkyl bromide redox chemistry typically found in atom transfer radical polymerization (ATRP) can be incorporated in concert with dithiocarbonyl disulfide chemistry into the reversible addition–fragmentation chain transfer (RAFT) process via bismuth oxide photocatalysis. This amalgamation of mechanisms introduces end-group modularity—a new layer of control—into RAFT polymers uniquely enabled by photoredox catalysis. We found that a diversity of functionality can be installed at the α-end group via alkyl bromides, while the molecular weight distribution can be tuned seamlessly at the ω-end group through the simultaneous addition of multiple disulfides.
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See moreHeterogeneous photocatalysis is increasingly used in reversible deactivation radical polymerization (RDRP). In this study, we found that alkyl bromide redox chemistry typically found in atom transfer radical polymerization (ATRP) can be incorporated in concert with dithiocarbonyl disulfide chemistry into the reversible addition–fragmentation chain transfer (RAFT) process via bismuth oxide photocatalysis. This amalgamation of mechanisms introduces end-group modularity—a new layer of control—into RAFT polymers uniquely enabled by photoredox catalysis. We found that a diversity of functionality can be installed at the α-end group via alkyl bromides, while the molecular weight distribution can be tuned seamlessly at the ω-end group through the simultaneous addition of multiple disulfides.
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Date
2020Source title
MacromoleculesVolume
53Issue
23Publisher
Amercian Chemical SocietyFunding information
ARC DE180100007Licence
Copyright All Rights ReservedFaculty/School
Faculty of Science, School of ChemistryShare