Geometrically isomeric [Ir(iqbt)(ppy)(hpa)] complexes with differential molecule orientations for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs)

Abstract

Based on geometrical isomerisation of [Ir(C^N¹)(C^N²)(N^O)]-tris-heteroleptic Ir(III)-complexes, the augmented transition dipole transition (TMD) with a preferential horizontal orientation, beneficial for their photo-excited and electroluminescent NIR-phosphorescence, is reported.