Heck, Matthias; Botha, Carlo; Wilhelm, Manfred; Hirschberg, Valerian published their research in Macromolecular Rapid Communications in 2021. The article was titled 《One-Pot Synthesis of Alternating (Ultra-High Molecular Weight) Multiblock Copolymers via a Combination of Anionic Polymerization and Polycondensation》.Quality Control of 1,4-Bis(bromomethyl)benzene The article contains the following contents:
This article presents a fast, straightforward synthesis approach to polymerize alternating multiblock copolymers, ultra-high mol. weight (UHMW) (homo)polymers as well as precursors for complex macromol. topologies such as comb or barbwire architectures. The one-pot synthesis strategy proposed in this work is based on anionic polymerization via a bifunctional initiator and the subsequent linking of macro dianions with a bifunctional linker, addnl. overcoming the limitations associated with the monomer reactivity. Thus, the synthetic route guarantees the repeating size of polymer blocks and an equal distribution of functional groups in precursors for complex topologies. Dianions of polystyrene (PS), polyisoprene-b-polystyrene-b-polyisoprene, and poly-2-vinylpyridine-b-polystyrene-b-poly-2-vinylpyridine are linked with α,α’-dibromo-para-xylene to UHMW and multiblock copolymers. Multiblock copolymers with on average up to 50 well-defined alternating A and B blocks are accessible within 15 min. The experimental part of the paper was very detailed, including the reaction process of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Quality Control of 1,4-Bis(bromomethyl)benzene)
1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Quality Control of 1,4-Bis(bromomethyl)benzene
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary