Synthesis and characterization of a novel mixed-ligand diorganotin(IV) complex as a precursor for the fabrication of an organic light emitting diode

A new mixed-ligand diorganotin(IV) complex, [μ-(4-dpe){Me2Sn(cup)2}2] (1), was synthesized by reacting dimethyltin(IV) dichloride with 1,2-di(4-pyridyl)ethylene (4-dpe) and ammonium N-Nitroso-N-phenylhydroxylamine (cup). The prepared complex was fully characterized by PXRD, 1H, 13C and 119Sn NMR, IR, and UV spectra and elemental analysis (CHN). The solid-state structure of 1 was also investigated via single crystal XRD. By considering the obtained structural parameters, complex 1 consists of centrosymmetric binuclear units that crystallize in the monoclinic system with the space group of P21/c. Thermal behavior of prepared coordination compound was examined under air atmosphere by thermogravimetric and differential thermal analysis (TGA and DTA). The study of thermal behavior and luminescence properties of prepared diorganotin(IV) complex showed that this compound has the necessary conditions for its use as a precursor in the manufacture of optical devices. The prepared coordination compound was doped into a PVK:PBD blend in two different concentrations as a light emitting material in the fabrication of two organic light-emitting diodes (OLEDs).