Resonance-Enhanced Charge Delocalization in Carbazole–Oligoyne–Oxadiazole Conjugates

There are notably few literature reports of electron donor–acceptor oligoynes, even though they offer unique opportunities for studying charge transport through “all-carbon” molecular bridges. In this context, the current study focuses on a series of carbazole−(C≡C)n−2,5-diphenyl−1,3,4-oxadiazoles (n = 1–4) as conjugated π-systems in general and explores their photophysical properties in particular. Contrary to the behavior of typical electron...