Eric’s son Ari is working on a chemistry project at college. He is doing a survey of certain types of molecules in order to find a new way of making solar cells.

He writes:

Dibenzothieno[3,2-B]-thiophene, one of our candidate molecules.

I’ve been trying to figure out where the electrons are in the Highest Occupied Molecular Orbital (HOMO) and the Lowest Unoccupied Molecular Orbital (LUMO), coloring them, and then creating graphics like this.