Safety of Cupric bromideIn 2020 ,《Synthesis of sugar-based macromolecules via sono-ATRP in miniemulsion》 was published in Polymers for Advanced Technologies. The article was written by Zaborniak, Izabela; Surmacz, Karolina; Chmielarz, Pawel. The article contains the following contents:
Ultrasound-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is used for the first time for the preparation of complex macromol. architectures by a facile two-step synthetic route. Initially, esterification reaction of sucrose or lactulose with α-bromoisobutyryl bromide (BriBBr) is conducted to receive multifunctional ATRP macroinitiators with 8 initiation sites, followed by polymerization of Bu acrylate (BA) forming arms of the star-like polymers. The brominated lactulose-based mol. was examined as an ATRP initiator by determining the activation rate constant (ka) of the catalytic process in the presence of a copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) catalyst in both organic solvent and for the first time in miniemulsion media, resulting in ka = (1.03 ± 0.01) × 104 M-1s-1 and ka = (1.16 ± 0.56) × 103 M-1s-1, resp. Star-like macromols. with a sucrose or lactulose core and poly(Bu acrylate) (PBA) arms were successfully received using different catalyst concentration Linear kinetics and a well-defined structure of synthesized polymers reflected by narrow mol. weight distribution (Mw/Mn = 1.46) indicated 105 ppm weight of catalyst loading as concentration to maintain controlled manner of polymerization process. 1H NMR anal. confirms the formation of new sugar-inspired star-shaped polymers. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Safety of Cupric bromide)
Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Safety of Cupric bromide
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”