Synthetic Route of Br2CuIn 2021 ,《Precise Control of Both Dispersity and Molecular Weight Distribution Shape by Polymer Blending》 was published in Angewandte Chemie, International Edition. The article was written by Whitfield, Richard; Truong, Nghia P.; Anastasaki, Athina. The article contains the following contents:
The breadth and the shape of mol. weight distributions can significantly influence fundamental polymer properties that are critical for various applications. However, current approaches require the extensive synthesis of multiple polymers, are limited in dispersity precision and are typically incapable of simultaneously controlling both the dispersity and the shape of mol. weight distributions. Here we report a simplified approach, whereby on mixing two polymers (one of high D and one of low D), any intermediate dispersity value can be obtained (e.g. from 1.08 to 1.84). Unrivalled precision is achieved, with dispersity values obtained to even the nearest 0.01 (e.g. 1.37→1.38→1.39→1.40→1.41→1.42→1.43→1.44→1.45), while maintaining fairly monomodal mol. weight distributions. This approach was also employed to control the shape of mol. weight distributions and to obtain diblock copolymers with high dispersity accuracy. The straightforward nature of our methodol. alongside its compatibility with a wide range of polymerization protocols (e.g. ATRP, RAFT), significantly expands the toolbox of tailored polymeric materials and makes them accessible to all researchers. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu)
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.Synthetic Route of Br2Cu
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”