Synthesis, Study, and Application of Pd(II) Hydrazone Complexes as the Emissive Components of Single-Layer Light-Emitting Electrochemical Cells was written by Emami, Marzieh;Shahroosvand, Hashem;Bikas, Rahman;Lis, Tadeusz;Daneluik, Cody;Pilkington, Melanie. And the article was included in Inorganic Chemistry in 2021.Application In Synthesis of Phenyl(pyridin-2-yl)methanone This article mentions the following:
For the first time, square planar Pd(II) complexes of hydrazone ligands have been investigated as the emissive components of light-emitting electrochem. cells (LECs). The neutral transition metal complex, [Pd(L1)2]·2CH3OH (1), (HL1 = (E)-N′-(phenyl(pyridin-2-yl)methylene)isonicotinhydrazide), was prepared and structurally characterized. Complex 1 displays quasireversible redox properties and is emissive at room temperature in solution with a λmax of 590 nm. As a result, it was subsequently employed as the emissive material of a single-layer LEC with configuration FTO/1/Ga/In, where studies reveal that it has a yellow color with CIE(x, y) = (0.33, 0.55), a luminance of 134 cd cm-2, and a turn-on voltage of 3.5 V. Protonation of the pendant pyridine nitrogen atoms of L1 afforded a second ionic complex [Pd(L1H)2](ClO4)2 (2) which is also emissive at room temperature with a λmax of 611 nm, resulting in an orange LEC with CIE(x, y) = (0.43, 0.53). The presence of mobile anions and cations in the second inorganic transition metal complex resulted in more efficient charge injection and transport which significantly improved the luminance and turn-on voltage of the device to 188.6 cd cm-2 and 3 V, resp. This study establishes Pd(II) hydrazone complexes as a new class of materials whose emissive properties can be chem. tuned and provides proof-of-concept for their use in LECs, opening up exciting new avenues for potential applications in the field of solid state lighting. The emissive properties of two Pd(II) hydrazone complexes have been exploited for the fabrication of single-layer light-emitting electrochem. cells. We demonstrate that a neutral Pd(II) complex capable of undergoing proton transfer with the solvent can support a suitable ionic medium for LECs. Furthermore, selective protonation of the hydrazone ligands and the introduction of perchlorate counterions afford a second LEC device with increased c.d., a red-shifted emission, and significantly improved brightness. In the experiment, the researchers used many compounds, for example, Phenyl(pyridin-2-yl)methanone (cas: 91-02-1Application In Synthesis of Phenyl(pyridin-2-yl)methanone).
Phenyl(pyridin-2-yl)methanone (cas: 91-02-1) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Application In Synthesis of Phenyl(pyridin-2-yl)methanone