Donor–acceptor ferrocenyl triazines: synthesis and properties

A series of star shaped donor–π–acceptor type symmetrical triazine was designed and synthesized by the Pd-catalysed Sonogshira cross coupling reaction. The ferrocenyl moiety with different spacer groups acts as donor and 1,3,5-triazine as acceptor. The photophysical results show intramolecular charge transfer from ferrocene to the 1,3,5-triazine unit. The cyclic voltammetric analysis reveals substantial donor–acceptor interaction. The triazines exhibit good thermal stability with high decomposition temperature.