The heteroleptic complexes containing 2,3-diphenylquinoline derivatives as phosphorescent materials

Ahn, So Youn; Ko, Myung Joo; Ha, Yunkyoung

doi:10.1016/j.jpcs.2007.10.126

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…The synthesis of Ir2 and Ir3 relies on the same strategy, namely the isolation of iridium dimers 1 and 2, [54][55][56][57] and the subsequent coordination with acac and phenanthroline, respectively.…”

Section: A Synthesis Of the Complexesmentioning

confidence: 99%

“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells

et al. 2019

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Cyclometallated iridium complexes have shown great promises as photosensitizers for p-type dye sensitized solar cells (p-DSSC), in particular due to the occurrence of very long-lived interfacial charge separated states, leading to high open circuit potentials (Voc). To rationalize this experimental fact, we prepared a new series of iridium photosensitizers specially designed for NiO based p-DSSC, in order to assess the role of a panel of factors on the overall photovoltaic performances. We probed the electronic coupling between the iridium complex and the semi-conductor at the level of the anchor, the importance of the frontier orbitals distribution over the photosensitizers structures and the impact of iridium(III) vs. a lighter metal ion like ruthenium(II). The synthesis and full characterizations of these new photosensitizers are presented, and their performances within p-type DSSC are given and discussed in light of their structures. A combination of a high spin-orbit coupling and a smart design of the anchoring ligands explains the interesting performances of iridium complexes as photosensitizers for p-DSSC.

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Section: A Synthesis Of the Complexesmentioning

confidence: 99%

“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells

et al. 2019

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“…However, for the PL spectra of Ir(ppy) 2 (4-Me-2,3-dpq) showed the green emission mainly from the MLCT state of ppy. This is because the radiative lifetime of Ir(4-Me-2,3-dpq) 3 is longer than of that of Ir(ppy) 3 and inter-ligand energy transfer time from the ppy MLCT state to the 4-Me-2,3-dpq MLCT state [14]. This suggests that the heteroleptic Ir(ppy) 2 (dpq) shows a significant red shifted phosphorescence due to lower steric hindrance in ppy moieties compared with Ir(dpq) 3 .…”

Section: Resultsmentioning

confidence: 99%

Red Organic Light-Emitting Diode Using the Heteroleptic Tris-Cyclometalated Iridium Complex

Kim

2009

Molecular Crystals and Liquid Crystals

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A novel red phosphorescent heteroleptic tris-cyclometalated iridium complex, Ir(ppy) 2 (dpq) based on 2-phenylpyridine (ppy) and 2,4-diphenylquinoline (dpq) ligand was synthesized and characterized for application in organic light-emitting diodes (OLEDs). The heteroleptic tris-cyclometalated iridium complex leads to a significant improvement in luminescence efficiency by cascade exciton transfer and the avoidance of triplet-triplet (T-T) annihilation. A ppy ligand with triplet state energies intermediate between that of the host and the emitting ligand can be successfully employed as ''sensitizing ligand'' allowing for efficient energy transfer from the host to the emitting ligand. A maximum luminance efficiency of g c ¼ 14.06 cd=A was achieved at a current density of J ¼ 20.94 mA=cm 2 . At a higher current density of J ¼ 100 mA=cm 2 , an efficiency of g c ¼ 10.77 cd=A was obtained.

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Glycerol as Suitable Solvent for the Synthesis of Metallic Species and Catalysis

Chahdoura¹,

Favier²,

Gómez³

2014

Chemistry A European J

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This Minireview considers the foremost reported works involving glycerol as a solvent in the synthesis of organometallic complexes and metallic nanoparticles. This analysis highlights their catalytic applications. A special emphasis is devoted to the ability of glycerol to immobilize nanometric species, which, in turn, enables an efficient recycling of the catalytic phase to give metal-free organic products.

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The heteroleptic complexes containing 2,3-diphenylquinoline derivatives as phosphorescent materials

Cited by 6 publications

References 18 publications

“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells

“Iridium effect” in cyclometalated iridium complexes for p-type dye sensitized solar cells

Red Organic Light-Emitting Diode Using the Heteroleptic Tris-Cyclometalated Iridium Complex

Glycerol as Suitable Solvent for the Synthesis of Metallic Species and Catalysis

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