Doerr, Alicia M.; Curry, Matthew R.; Chapleski, Robert C.; Burroughs, Justin M.; Lander, Elizabeth K.; Roy, Sharani; Long, Brian K. published an article on January 7 ,2022. The article was titled 《Redox Potential as a Predictor of Polyethylene Branching Using Nickel α-Diimine Catalysts》, and you may find the article in ACS Catalysis.HPLC of Formula: 111865-47-5 The information in the text is summarized as follows:
The ability to control polyethylene branching d. is of great interest as a means by which a polymer’s thermomech. properties may be tailored. One particularly interesting way in which this can be achieved is by altering the electronic characteristics of Pd- and Ni-based α-diimine catalysts through the inclusion of electron-withdrawing or electron-donating substituents onto the ligand scaffold; however, a few critical fundamental studies are absent from the literature. These include a systematic examination of electronic perturbations of Ni-based α-diimine catalysts, as well as how placement of donating or withdrawing substituents on the backbone vs. N-aryl moieties of the α-diimine ligand framework impact polymer topol. In addition, no method currently exists by which the polymer topol. may be predicted based on an intrinsic characteristic of the (pre)catalyst or ligand without requiring extensive polymerization studies. Herein, the authors use both exptl. and computational methods to understand how the placement of electron-donating or electron-withdrawing substituents on Ni α-diimine catalysts affects PE branching d., and compare those results to the analogous unsubstituted catalyst. Inclusion of electron-withdrawing substituents decreases resultant PE branching d., whereas electron-donating substituents exhibit little to no change in PE branching d. Finally, as the placement and identity of donating or withdrawing substituents are varied, so too is the redox half-wave potential (E1/2) of the precatalysts, which can be used to generate a predictive curve by which PE branching d. may be estimated for other substituted Ni-based α-diimine catalysts without the need for extensive polymerization studies.Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5HPLC of Formula: 111865-47-5) was used in this study.
Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products. HPLC of Formula: 111865-47-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary