Related Products of 7789-45-9In 2020 ,《Controlled Synthesis of Concentrated Polymer Brushes with Ultralarge Thickness by Surface-Initiated Atom Transfer Radical Polymerization under High Pressure》 appeared in Macromolecules (Washington, DC, United States). The author of the article were Hsu, Shu-Yao; Kayama, Yuzo; Ohno, Kohji; Sakakibara, Keita; Fukuda, Takeshi; Tsujii, Yoshinobu. The article conveys some information:
The synthesis of ultrathick concentrated poly(Me methacrylate) (PMMA) brushes by atom transfer radical polymerization (ATRP) was investigated. The reactions were performed with a catalyst system of Cu(I)Br/dinonyl-2,2′-bipyridine (dN-bipy) and Cu(II)Br2/dN-bipy at 60°C under a high pressure of 500 MPa. The equilibrium constant for this catalyst system was determined to be 1.5 × 10-6, which followed the kinetics study and indicated good polymerization rate control. Under the high pressure of 500 MPa, a micrometer scale thick PMMA brush was obtained. During chain growth under the high pressure, the concentration of the deactivator catalyst was demonstrated to significantly affect the graft d. of PMMA brushes, which was correlated to the number of monomers added in activation-deactivation cycles. A novel “”cutoff”” experiment and gel permeation chromatog. demonstrated similar propagation for free polymers and graft polymers even under high pressure. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Related Products of 7789-45-9)
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.Related Products of 7789-45-9
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”