《Kinetic study on ultraviolet light-induced solution atom transfer radical polymerization of methyl acrylate using TiO2》 was written by Liu, Yuan-Xing; Bian, Chao; Zhou, Yin-Ning; Li, Jin-Jin; Luo, Zheng-Hong. Synthetic Route of Br2Cu And the article was included in Industrial & Engineering Chemistry Research in 2020. The article conveys some information:
The kinetics of the UV light-induced solution atom transfer radical polymerization (ATRP) of Me acrylate using titanium oxide (TiO2) was investigated through experiments and modeling by the method of moments. The apparent rate coefficient for activator (re)generation accounting for the variation of the amount of TiO2 was fitted to match the exptl. data. The amplification experiments were then conducted to interpret and better understand the size effect on the photo ATRP behaviors, of which the exptl. data indicated that the polymerization rate and Mw/Mn are pos. correlated with the size of the reaction volume The simulations revealed that the termination rate coefficient (kt) and the deactivation rate (kda) diminish with the increasing size. In addition, the amplification effect was analyzed theor. When the size is scaled up, the heat transfer area per unit volume decreases, leading to the reduction in heat removal capacity so as to result in local overheating. The polymerization rate therefore increases with the viscosity increasing at a higher speed, causing the decrease of kt and kda. As a result, the higher free radical concentration drives the polymerization toward acceleration and loss of control, consistent with the data of the amplification experiments After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu)
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.Synthetic Route of Br2Cu
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”