Metal-free atom transfer radical polymerization with ppm catalyst loading under sunlight

Organocatalytic atom transfer radical polymerization (O-ATRP) is recently emerging as an appealing method for the synthesis of metal-free polymer materials with well-defined microstructures and architectures. However, the development of highly effective catalysts that can be employed at a practical...

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Detalles Bibliográficos
Autores principales: Ma, Qiang, Song, Jinshuai, Zhang, Xun, Jiang, Yu, Ji, Li, Liao, Saihu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7814125/
https://www.ncbi.nlm.nih.gov/pubmed/33462235
http://dx.doi.org/10.1038/s41467-020-20645-8
Descripción
Sumario:Organocatalytic atom transfer radical polymerization (O-ATRP) is recently emerging as an appealing method for the synthesis of metal-free polymer materials with well-defined microstructures and architectures. However, the development of highly effective catalysts that can be employed at a practical low loading are still a challenging task. Herein, we introduce a catalyst design logic based on heteroatom-doping of polycyclic arenes, which leads to the discovery of oxygen-doped anthanthrene (ODA) as highly effective organic photoredox catalysts for O-ATRP. In comparison with known organocatalysts, ODAs feature strong visible-light absorption together with high molar extinction coefficient (ε(455nm) up to 23,950 M(–1) cm(–1)), which allow for the establishment of a controlled polymerization under sunlight at low ppm levels of catalyst loading.