We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Visible Light‐ATRP Driven by Tris(2‐Pyridylmethyl)Amine (TPMA) Impurities in the Open Air.
- Authors
Jazani, Arman Moini; Schild, Dirk J.; Sobieski, Julian; Hu, Xiaolei; Matyjaszewski, Krzysztof
- Abstract
Atom transfer radical polymerization (ATRP) of oligo(ethylene oxide) monomethyl ether methacrylate (OEOMA500) in water is enabled using CuBr2 with tris(2‐pyridylmethyl)amine (TPMA) as a ligand under blue or green‐light irradiation without requiring any additional reagent, such as a photo‐reductant, or the need for prior deoxygenation. Polymers with low dispersity (Đ = 1.18–1.25) are synthesized at high conversion (>95%) using TPMA from three different suppliers, while no polymerization occurred with TPMA is synthesized and purified in the laboratory. Based on spectroscopic studies, it is proposed that TPMA impurities (i.e., imine and nitrone dipyridine), which absorb blue and green light, can act as photosensitive co‐catalyst(s) in a light region where neither pure TPMA nor [(TPMA)CuBr]+ absorbs light.
- Subjects
ETHYLENE oxide; AMINES; BLUE light; POLYMERS; RADICALS (Chemistry); METHACRYLATES; POLYMERIZATION; PYRAZOLYL compounds
- Publication
Macromolecular Rapid Communications, 2023, Vol 44, Issue 16, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202200855