Category: ruthenium-catalysts. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate), is researched, Molecular C30H24F12N6P2Ru, CAS is 60804-74-2, about Ion gel-based flexible electrochemiluminescence full-color display with improved sky-blue emission using a mixed-metal chelate system. Author is Kwon, Do-Kyun; Myoung, Jae-Min.
Electrochemiluminescence (ECL) materials using redox reactions are attracting attention owing to their remarkable advantages, such as simple structure and use of electrodes without work function limitations. In addition, ECL materials are strong in moisture and air atm. and independent of thickness, which is advantageous for low cost printing processes. However, in order to implement next-generation displays, it is necessary to improve the blue (B) emission characteristics and simultaneously realize emission of the three primary colors of red (R), green (G), and B. In this study, ion gel-based flexible ECL display incorporating R, G, and sky-blue (SB) emissions have been successfully demonstrated. The ECL display was implemented using [Ru(bpy)3](PF6)2, [Ir(Fppy)2(dmb)]PF6, and [Ir(Fppy)2(Mepic)] corresponding to R, G, and B emissions, resp. In particular, to achieve improved B ECL displays, the blended blue (BB) ECL display was designed using a mixed-metal chelate system with mixing of G and B luminophores. The luminance increased by more than 8 times at 5.0 AC peak-to-peak voltages (VPP) and the operating voltage decreased considerably for this BB ECL display compared to the B ECL display. The optimized R, G, and BB ECL displays showed stable emission with luminance of 63.2, 78.6, and 30.6 cd/m2, resp., at 5.0 VPP. In addition, the flexible ECL displays exhibited stable emission properties even after 5,000 cycles of repetitive mech. bending tests at a bending radius of 10 mm. These results demonstrate that ECL displays with a simple structure and fabrication process can be considered as a future alternative to conventional flexible displays.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI