Sun, Mingkang; Lorandi, Francesca; Yuan, Rui; Dadashi-Silab, Sajjad; Kowalewski, Tomasz; Matyjaszewski, Krzysztof published an article in 2021. The article was titled 《Assemblies of polyacrylonitrile-derived photoactive polymers as blue and green light photo-cocatalysts for Cu-catalyzed ATRP in water and organic solvents》, and you may find the article in Frontiers in Chemistry (Lausanne, Switzerland).Safety of Cupric bromide The information in the text is summarized as follows:
Photoluminescent nanosized quasi-spherical polymeric assemblies prepared by the hydrothermal reaction of polyacrylonitrile (PAN), ht-PLPPAN, were demonstrated to have the ability to photo-induce atom transfer radical polymerization (ATRP) catalyzed by low, ppm concentrations of CuII complex with tris(2-pyridylmethyl)amine (TPMA). Such photo induced ATRP reactions of acrylate and methacrylate monomers were performed in water or organic solvents, using ht-PLPPAN as the photo-cocatalyst under blue or green light irradiation Mechanistic studies indicate that ht-PLPPAN helps to sustain the polymerization by facilitating the activation of alkyl bromide species by two modes: (1) green or blue light-driven photoreduction of the CuII catalyst to the activating CuI form, and (2) direct activation of dormant alkyl bromide species which occurs only under blue light. The photoreduction of the CuII complex by ht-PLPPAN was confirmed by linear sweep voltammetry performed under illumination. Anal. of the polymerization kinetics in aqueous media indicated even though CuI complexes comprised only 1-1.4% of all Cu species at equilibrium, they exhibited high activation rate constant and activated the alkyl bromide initiators five to six orders of magnitude faster than ht-PLPPAN. After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9Safety of Cupric bromide)
Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Safety of Cupric bromide
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”