Coordination-organometallic hybrid materials based on the trinuclear M(II)-Ru(II) (M=Ni and Zn) complexes: Synthesis, structural characterization, luminescence and electrochemical properties

A new series of trinuclear complexes of the type Ni[RC6H4NCH(O)C6H3CCRu(dppe)2Cl]2 (1a-c) and Zn[RC6H4 NCH(O)C6H3CCRu(dppe)2Cl]2 (2a-c) have been prepared and characterized. The crystal structure and morphology of the hybrid complexes was investigated with X-ray powder diffraction (XRPD), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The electrochemical behaviour of the complexes shows quasireversible redox behaviour corresponding to Ru(II)/Ru(III) and Ni(II)/Ni(III) couple for 1a-c and only Ru(II)/Ru(III) couple for 2a-c. All complexes are emissive in solution at room temperature revealing the influence of substituent's and solvent polarity on the emission properties of the complexes.98