First example of an electropolymerizable heptazine bearing oligothiophene arms: a new way to produce well-defined heptazine-containing polymers

We prepared the first example of a heptazine molecule bearing three arms, each of them functionalized with a terminal thiophene. This novel molecule is strongly fluorescent, benefiting from the energy transfer between the strongly absorbing heptazine and strongly emitting benzothiadiazole-thiophene segments. This new molecule should enable multiple types of graftings by leveraging the various reactivities of the terminal thiophene moiety.