In 2019,Macromolecular Chemistry and Physics included an article by Zaborniak, Izabela; Chmielarz, Pawel. Application In Synthesis of Cupric bromide. The article was titled 《Temporally Controlled Ultrasonication-Mediated Atom Transfer Radical Polymerization in Miniemulsion》. The information in the text is summarized as follows:
Due to the increasing requirement for more environmentally and industrially relevant approaches in macromols. synthesis, ultrasonication-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is applied for the first time to obtain precisely defined poly(Bu acrylate) (PBA) and poly(Me methacrylate) (PMMA) homopolymers, and poly(Bu acrylate)-block-poly(tert-Bu acrylate) (PBA-b-PtBA) and poly(Bu acrylate)-block-poly(Bu acrylate) (PBA-b-PBA) copolymers. It is demonstrated in the reaction setup with strongly hydrophilic catalyst copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) responsible for two principal mechanisms – interfacial and ion-pair catalysis reflecting single-catalyst approach. This solution turns out to be an excellent tool in controlled preparation of well-defined polymers with narrow mol. weight distribution (up to ETH = 1.28) and preserves chain-end functionality (DCF = 0.02% to 0.32%). Temporal control over the polymer chain growth is successfully conducted by turning the ultrasonication on/off. Taking into consideration long OFF stage (92.5 h) during ultrasonication-induced polymerization in miniemulsion, synthesis is efficiently reinitiated without any influence on controlled characteristics maintaining the precise structure of received PBA homopolymers, confirmed by narrow mol. weight distribution (ETH = 1.26) and high retention of chain-end functionality (DCF = 0.01%). This procedure constitutes an excellent simple and eco-friendly approach in preparation of functional polymeric materials.Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide) was used in this study.
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.Application In Synthesis of Cupric bromide
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”