Dual emissive dinuclear Iridium(III) azomethine complexes: Synthesis, luminescence, thermal stability and antibacterial studies
Prof Hadariah and co-workers from Universiti Malaya and Balochistan University of ITEMS, Pakistan, have successfully synthesised and identified three new dinuclear Ir(III) azomethine [N,N,O,O] complexes. Chemical structure elucidation was performed through elemental analysis, IR, 1H and 13C NMR, UV–Visible, EDX and PXRD. Single crystals X-ray analysis of the novel azomethine L2 revealed significant twisting about the central sulfur atom, producing a warped molecule with [N,O] moieties on the opposite sides of the molecule. Evaluation of thermal decomposition profile revealed stability of up to 230oC and bactericidal studies showed moderate activity against three Gram-positive and three Gram-negative bacteria. Photoluminescence investigation in solid and liquid states demonstrated rare dual emissive properties in the solid state with large Stoke’s shifts. This opened a route for the development of cost effective solid state photoluminescent materials.
The findings were accepted for publication in the Journal of Luminescence which ranked at quartile 1 (Q1) with Impact Factor (IF) of 3.02.
Aziza Sarwar, Siti Munirah Saharin, Hadariah Bahron, Yatimah Alias (2021) Dual emissive dinuclear Iridium(III) azomethine complexes: Synthesis, luminescence, thermal stability and antibacterial studies, Journal of Luminescence, 233, 117861.