Computed Properties of Br2CuIn 2020 ,《Dually-functional riboflavin macromolecule as a supramolecular initiator and reducing agent in temporally-controlled low ppm ATRP》 was published in eXPRESS Polymer Letters. The article was written by Zaborniak, I.; Chmielarz, P.. The article contains the following contents:
A novel supramol. riboflavin-inspired macroinitiator was prepared for the first time by transesterification methodol. and used as the multifunctional vitamin-B2 core to synthesize PBA brushes using different low ppm atom transfer radical polymerization (ATRP) approaches. Firstly the macromol. initiator was successfully applied as a dually-functional structure, which simultaneously acts as a reducing agent in activator regeneration by electron transfer (ARGET) ATRP. Subsequently simplified electrochem. mediated ATRP of BA with different conditions was carried out for the preparation of well-defined riboflavin-based polymer brushes. Polymerizations were characterized in a well-controlled manner, affording polymers with a narrow dispersity (ETH = 1.22-1.25). Four-arms polymers were also received by an approach never described before – temporally-controlled multi-step seATRP under constant current conditions, giving precisely-defined polymer brushes (ETH = 1.26) with preserved chain-end functionality (DCF < 1%), despite stopping and restarting the polymerization The solvolysis results indicate that all chains grow to equal lengths (ETH < 1.17), which shows the precisely controlled characteristic of seATRP. 1H NMR anal. confirms the formation of new vitamin B2-inspired polymers. In connection with the preserved riboflavin functionality and addnl. functional chains, these innovative macromols. may find applications, e.g. as drug delivery systems. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Computed Properties 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.Computed Properties of Br2Cu
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”