In my previous article, titled ”Brave new world” I wrote about the molecules that form while cutting graphene layers. Although I have defined a new group, namely minimal nano graphene ribbon in the group of minimal graphene ribbons, I had not gone further.
Now, however I am going to define the full range of graphenes.
Initially there was the three dimensional graphite. Then came the two dimensional graphene, which was so far called simply graphene. This has not only been derived from the three dimensional type, but it has been produced from it.
The minimal graphene ribbon I introduced is that one dimensional graphene, which has only one Kekulé sextet in one direction. This could be the A-A type as seen on Fig 1., Z-Z type (Fig 2.), 1-1 type (Fig 3.), as well as mixed types derived from these (eg. A-1 Fig 4.). This could probably also be produced from the two dimensional graphene with properly guided cuts.
But with continuing cutting and minimizing we can eventually get to absolute minimal graphenes, to the zero dimensional types. These are the well known cyclohexane, cyclohexene, cyclohexadiene, benzene and their substituted derivatives. This way there comes a derivative connection between graphene and classical six-membered cyclic compounds.
Of course no one will manufacture zero dimensional graphene from one dimensional, but instead from zero dimensional, starting from substituted compounds perhaps they will manufacture one dimensional.
Let’s move on!
Why are only poly-sextet? Why not poly-quintet? Both ring forms are in the nature.
Dr. Endre Simonyi