New coordination polymers of 1,2,4,5-tetrakis (diphenylphosphino)pyridine with Eu(III), Tb (III), and Gd(III). Synthesis and luminescent properties

Abstract

This study presents a new class of coordination polymers synthesized from 1,2,4,5-tetrakis(diphenylphosphino)pyridine and trivalent Eu(III), Tb(III), and Gd(III) ions. The synthesized polymers exhibit a unique one-dimensional periodic structure enabled by the bridging chelate nature of the ligand, and a noteworthy luminescent efficiency. Terbium and Europium complexes demonstrate high quantum yields and high purity luminescence colors. They are therefore promising materials for photonic devices such as OLEDs, where high-intensity monochromatic emission is required.