New (2,2′-BI)Pyridines Substituted by Higher Amines Fragments, Synthesis and Properties

An effective synthetic approach to (2,2′-bi)pyridines containing higher amine fragments in the alpha position via their 1,2,4-triazine precursors has been proposed; reactions occurring in the absence of a solvent have been used, among other things. The photophysical properties of the new compounds have been studied; in acetonitrile solutions the latter have shown absolute photoluminescence quantum yields of up to 83.2%.