Post-polymerization modification of a hydroxy monolith precursor. Part II. Epoxy biphenyl modified poly (hydroxyethyl methacrylate-co- pentaerythritol triacrylate) monolithic capillary columns for reversed-phase capillary electrochromatography based on π-π and hydrophobic interactions was written by Khadka, Shantipriya;Rassi, Ziad El. And the article was included in Electrophoresis in 2016.Product Details of 615-55-4 This article mentions the following:
In this second part of the series of investigations involving the post polymerization modification of a hydroxy monolith (OHM) capillary column, the surface hydroxyl groups were reacted with epoxy biphenyl thus yielding the so-called Biphenyl OHM capillary column. The modification involved the epoxy ring opening of the 2-biphenylyl glycidyl ether catalyzed by BF3 and its subsequent reaction with the hydroxyl groups on the OHM precursor. The Biphenyl OHM capillary column thus obtained exhibited the typical reversed phase behavior by primarily hydrophobic interactions vis-a-vis the homologous series of alkyl benzenes and in addition by π-π interactions towards nitroalkane homologous series via their π-electron rich nitro groups. This dual retention mechanism was very distinctly observed with a set of polyaromatic hydrocarbon (PAH) solutes in the sense that the k values of the PAH solutes were comparable to those obtained on a more non polar stationary phase, namely the Epoxy OHM C-16 reported in the preceding article. Other aromatic solutes showed the dual retention mechanism on the Biphenyl OHM capillary including phenols, anilines derivatives and phenoxy acid herbicides. The Biphenyl OHM capillary exhibited good reproducibility from run-to-run, day-to-day and column-to-column. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Product Details of 615-55-4).
3,4-Dibromoaniline (cas: 615-55-4) 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. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Product Details of 615-55-4
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary