“…8 Similarly, the widely employed electron acceptors exhibit negative mesomeric or inductive effect (–M/–I) that comprise of –NO 2 , –CN, –CHO, –COOH groups as well as heterocycles such as pyridine, imidazoles, benzothiazoles, benzooxazoles and many others. 8 Push-pull chromophores containing the heterocyclic cores – oxazoles, 15–19 oxadiazoles 20–23 and triazoles 24,25 have received much attention in recent years, however, studies on the photophysical and NLO properties of the related tetrazole-based molecular systems are scarce in the literature. For instance, photophysical properties of compounds containing a tetrazole scaffold have been reported.…”