scholarly journals Advances in Organocatalyzed Atom Transfer Radical Polymerization

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Xin Hu ◽  
Ning Zhu ◽  
Kai Guo
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Feasible Solution ◽  
Metal Catalyst ◽  
Catalyst Loading ◽  
Limiting Factor ◽  
Atom Transfer ◽  
Significant Progress ◽  
Future Directions ◽  
Metal Free

Atom transfer radical polymerization (ATRP) is one of the most robust tools to prepare well-defined polymers with precise topologies and architectures. Although series of improved ATRP methods have been developed to decrease the metal catalyst loading to parts per million, metal residue is the key limiting factor for variety of applications, especially in microelectronic and biomedical area. The feasible solution to this challenge would be the establishment of metal-free ATRP. Since 2014, organocatalyzed ATRP (O-ATRP) or metal free ATRP has achieved significant progress by developing kinds of organic photoredox catalysts. This review highlights the advances in organocatalyzed atom transfer radical polymerization as well as the potential future directions.

scholarly journals Evolution and Future Directions of Metal-Free Atom Transfer Radical Polymerization

2018 ◽  
Vol 51 (19) ◽  
pp. 7421-7434 ◽  
Author(s):  
Emre H. Discekici ◽  
Athina Anastasaki ◽  
Javier Read de Alaniz ◽  
Craig J. Hawker
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Free Atom ◽  
Atom Transfer ◽  
Future Directions ◽  
Metal Free

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

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qiang Ma ◽  
Jinshuai Song ◽  
Xun Zhang ◽  
Yu Jiang ◽  
Li Ji ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Catalyst Design ◽  
Polymer Materials ◽  
Catalyst Loading ◽  
Atom Transfer ◽  
Controlled Polymerization ◽  
Heteroatom Doping ◽  
Metal Free ◽  
Highly Effective

AbstractOrganocatalytic 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 (ε455nm 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.

scholarly journals Metal-free atom transfer radical polymerization: reaching ppm catalyst loading under sunlight

2020 ◽  
Author(s):  
Qiang Ma ◽  
Jinshuai Song ◽  
Xun Zhang ◽  
Yu Jiang ◽  
Li Ji ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Catalyst Design ◽  
Polymer Materials ◽  
Catalyst Loading ◽  
Atom Transfer ◽  
Controlled Polymerization ◽  
Heteroatom Doping ◽  
Metal Free ◽  
New Class

Abstract 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 led to the discovery of oxygen-doped antratherene (ODA) as a new class of organic photoredox catalysts for O-ATRP. In comparison with known organocatalysts, ODAs feature strong visible-light absorption together with high molar extinction coefficient (ε455nm up to 23950 M–1cm–1), which allow for the establishment of a controlled polymerization under sunlight at low ppm levels of catalyst loading.

Photoinduced Metal-Free Atom Transfer Radical Polymerization of Acrylonitrile

2015 ◽  
Vol 4 (2) ◽  
pp. 192-196 ◽  
Author(s):  
Xiangcheng Pan ◽  
Melissa Lamson ◽  
Jiajun Yan ◽  
Krzysztof Matyjaszewski
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Free Atom ◽  
Atom Transfer ◽  
Metal Free

Organocatalyzed atom transfer radical polymerization (ATRP) using triarylsulfonium hexafluorophosphate salt (THS) as a photocatalyst

2020 ◽  
Vol 11 (12) ◽  
pp. 2222-2229
Author(s):  
Mengmeng Li ◽  
Sixuan Wang ◽  
Feifei Li ◽  
Lin Zhou ◽  
Lin Lei
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Free Atom ◽  
Atom Transfer ◽  
Metal Free ◽  
Methacrylate Monomers

Triarylsulfonium hexafluorophosphate salt (THS), an organic and inexpensive compound, was employed as a photocatalyst for metal free atom transfer radical polymerization (ATRP) of methacrylate monomers.

scholarly journals Visible Light-Induced Metal Free Surface Initiated Atom Transfer Radical Polymerization of Methyl Methacrylate on SBA-15

2017 ◽  
Author(s):  
Liang Ma ◽  
Na Li ◽  
Jian Zhu ◽  
Xiao Dong Chen
Keyword(s):  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Low Cost ◽  
Polymeric Composite ◽  
Structure Evolution ◽  
Atom Transfer ◽  
Metal Free ◽  
Ready Availability ◽  
Enhanced Adsorption

Surface initiated atom transfer radical polymerization (SI-ATRP) is one of the most versatile technique to modify the surface properties of material. Recent developed metal free SI-ATRP makes such technique more widely applicable. Herein photo-induced metal-free SI-ATRP of methacrylates, such as methyl methacrylate, N-isopropanyl acrylamide, and N,N- dimethylaminoethyl methacrylate, on the surface of SBA-15 was reported to fabricate organic-inorganic hybrid materials. SBA-15 based polymeric composite with adjustable graft ratio was obtained. The structure evolution during the SI-ATRP modification of SBA-15 was monitored and verified by FT-IR, XPS, TGA, BET, and TEM. The obtained polymeric composite showed enhanced adsorption ability for the model compound toluene in aqueous. This procedure provides a low cost, ready availability, and facile modification way to synthesize the polymeric composites without the contamination of metal.

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