title: Organocatalyzed atom transfer radical polymerization driven by visible light.
abstract: Atom transfer radical polymerization (ATRP) has become one of the most implemented methods for polymer synthesis, owing to impressive control over polymer composition and associated properties. However, contamination of the polymer by the metal catalyst remains a major limitation. Organic ATRP photoredox catalysts have been sought to address this difficult challenge but have not achieved the precision performance of metal catalysts. Here, we introduce diaryl dihydrophenazines, identified through computationally directed discovery, as a class of strongly reducing photoredox catalysts. These catalysts achieve high initiator efficiencies through activation by visible light to synthesize polymers with tunable molecular weights and low dispersities.
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA.
authors.forename: Jordan C
authors.initials: JC
authors.lastname: Theriot
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA. Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA.
authors.forename: Chern-Hooi
authors.initials: CH
authors.lastname: Lim
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA.
authors.forename: Haishen
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA.
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Ryan
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA. Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA. Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.
authors.forename: Charles B
authors.initials: CB
authors.lastname: Musgrave
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA. Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA. garret.miyake@colorado.edu.
authors.forename: Garret M
authors.initials: GM
authors.lastname: Miyake