Guanine condensates as covalent materials and the concept of cryptopores

Rediscovering Forgotten Members of the Graphene Family

“…Here we point to the fact that Bircumshaw prepared pCN from oxamide (the addition product of dicyan and water, while at higher temperatures oxamide eliminates water to dicyan). Our own group uses biocompatible nucleobases as starting products (note that guanine or cytosine have in principle a “C 1 N 1 ” composition), , and condensation reactions mostly process over a paracyan intermediate. Dicyan is then created just as a reactive intermediate, and those reactions are all rather “heat n’ bake” processes.…”

“…It is indeed very difficult to delimit the impact that such a study could have for materials science and societal implications. We already know that highly porous versions of C 1 N 1 extend the range of adsorption enthalpies and sorption selectivities of covalent materials for different gaseous and low molecular weight substrates, 39 and we can envision "sorption on demand" using such a library of condensation reactions will bring down to the temperatures of normal organic synthesis concepts other than those of carbonization. The ability to tailor chemical structure, porosity, and work functions will also have an impact on catalysis.…”

Caffeine-Derived Noble Carbons as Ball Milling-Resistant Cathode Materials for Lithium-Ion Capacitors

“…At high temperatures, the synthesis yielded a CN covalent material comprising less nitrogen (C/N ratio of 7) but still exhibiting high resistance upon oxidation and an ultrahigh surface area, thus standing as an excellent candidate for EES electrode ink preparation via ball milling. 24 , 25 …”

“…Noble carbons are a new class of carbon-based materials comprising a high resistance upon oxidation . Noble carbons are obtained upon heat treatment of a series of specific organic precursors that are already very resistant upon oxidation themselves (i.e., ionic liquids, nucleobases, or certain organic dyes). ,− Contrary to what occurs when carbonizing a conventional precursor (i.e., glucose), a noble carbon precursor decomposition leads to the formation of new and even more stable bonds to satisfy thermodynamics, which results in materials with low HOMO levels and great stability upon oxidation . Recently, a noble C 1 N 1 -like material exhibiting large stability upon oxidation derived from guanine, a purine nucleobase, was reported.…”

“…Recently, a noble C 1 N 1 -like material exhibiting large stability upon oxidation derived from guanine, a purine nucleobase, was reported. At high temperatures, the synthesis yielded a CN covalent material comprising less nitrogen (C/N ratio of 7) but still exhibiting high resistance upon oxidation and an ultrahigh surface area, thus standing as an excellent candidate for EES electrode ink preparation via ball milling. , …”