Exploiting the Site Selectivity of Perfluoropyridine for Facile Access to Densified Polyarylene Networks for Carbon-Rich Materials was written by Houck, Matthew B.;Brown, Loren C.;Lambeth, Robert H.;Iacono, Scott T.. And the article was included in ACS Macro Letters in 2020.Electric Literature of C5F5N The following contents are mentioned in the article:
Fluorinated mols. containing reactive functionalities are of great interest to the materials community as these compounds can be used to prepare fluorinated polymers with desirable phys. and electronic properties. Despite their potential, many of these compounds are limited by their synthesis which generally requires transition-metal catalyzed coupling reactions or harsh fluorinating conditions. Perfluoroheteroarom. compounds provide a unique solution to this problem as compounds such as perfluoro-pyridine can undergo SNAr reactions with a wide range of simple nucleophiles in a controlled and regioselective manner. Herein we report the transition metal-free synthesis of a pool of highly soluble high aromatic content (HAC) perfluoro-pyridine based thermosetting precursors and compounds of interest which can be easily obtained from readily available chem. precursors using simple nucleophilic chemistries. These thermally active monomers cure readily, in 350 to 400掳C temperature ranges, into highly densified polyarylene networks and demonstrate decomposition temperatures well above 400掳C and high char yields at 900掳C making these promising materials for high temperature applications as well as templates for carbon-based nanomaterials. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Electric Literature of C5F5N).
2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the 蟺-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the 蟽 bonds. One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.Electric Literature of C5F5N