STARBURST COMPLEXES OF DI-2-PYRIDYLAMINE DERIVATIVES WITH A BENZENE OR 1,3,5-TRIAZINE CORE

Abstract

ABSTRACT Luminescent starburst organic molecules have attracted much recent attention primarily because of their potential applications in organic light emitting diodes. Starburst organic molecules that are functionalized by donor groups such as pyridyl are especially interesting because they can bind to metal ions to form unusual structures and supramolecular assemblies in addition to the introduction of redox properties and catalytic capability associated with the metal ions. This review focuses on starburst molecules that contain 2,2′-dipyridylamino groups with a C 3 symmetry. The smallest members of this group of starburst molecules involve a central benzene core or a 1,3,5-triazine core which are covered in this review. Larger starburst molecules that involve 1,3,5-triphenylbenzene, 1,3,5-tris(biphenyl)benzene, 2,4,6-triphenyltriazine or 2,4,6-tris(biphenyl)triazine as the central core are not discussed in the present review. The structural variation and luminescent properties of various metal complexes involving the small starburst ligands are described.