Anthraquinonyl isoquinoline-based deep-red emissive neutral iridium(III) complexes for solution‐processed organic light‐emitting diodes

Zhang, Zihao; Li, Lixiang; Zhou, Weiqiao; Zeng, Qin; Gong, Yongyang; Guo, Song; Xie, Guohua; Liu, Yuanli

doi:10.1016/j.inoche.2024.112616

Inorganic Chemistry Communications

2024

DOI: 10.1016/j.inoche.2024.112616

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Anthraquinonyl isoquinoline-based deep-red emissive neutral iridium(III) complexes for solution‐processed organic light‐emitting diodes

Zihao Zhang,

Lixiang Li,

Weiqiao Zhou

et al.

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Cited by 2 publications

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Rational design and characterization of efficient deep-red iridium(III) complexes with 2-(benzothienyl)pyridine and tetraphenylimidodiphosphinate ligands

Ma,

Li,

et al. 2024

Dyes and Pigments

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Rational design and characterization of efficient deep-red iridium(III) complexes with 2-(benzothienyl)pyridine and tetraphenylimidodiphosphinate ligands

Ma,

Li,

et al. 2024

Dyes and Pigments

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Synthesis, Photoluminescence, and Electroluminescence of Phosphorescent Dipyrido[3,2-a;2′3′-c]phenazine–Platinum(II) Complexes Bearing Hole-Transporting Acetylide Ligands

Matsuura,

Okamura,

Nagaoka

et al. 2024

Molecules

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In this study, novel phosphorescent dipyrido[3,2-a;2′3′-c]phenazine (dppz)–platinum(II)–phenylacetylide complexes were developed to fabricate non-doped organic light-emitting diodes (OLED) by solution-processing. To facilitate the charge carrier injection into the emitting layer (EML), 3,6-di-tert-butylcarbazole-functinalized phenylacetylides were employed. As for the dppz ligand, 9,9-dihexylfluoren-2-yl and 4-hexylthiophen-2-yl side-arms were introduced to the 2,7-positions, which led to reddish orange and red photoluminescence (PL), respectively, in solution and film states (PL wavelength: ca. 600 and ca. 625 nm, respectively). The carbazole-appended phenylacetylide ligands hardly affected the emission color, although unsubstituted phenylacetylides gave rise to aggregate- or excimer-based near-infrared PL with a low quantum yield. Two types of non-doped OLEDs were fabricated: single-layer and multilayer devices. In both devices, the organic layers were fabricated by spin-coating, and the EML consisted of a neat film of the corresponding platinum(II) complex. Therein, electroluminescence spectra corresponding to those of PL were observed. The single-layer devices exhibited low device efficiencies due to a deteriorated charge carrier balance. The multilayer devices possessed hole- and electron-transporting layers on the anode and cathode sides of the EML, respectively. Owing to an improved charge carrier balance, the multilayer devices exhibited higher device performance, affording considerably improved values of luminance and external quantum efficiency.

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Anthraquinonyl isoquinoline-based deep-red emissive neutral iridium(III) complexes for solution‐processed organic light‐emitting diodes

Cited by 2 publications

References 28 publications

Rational design and characterization of efficient deep-red iridium(III) complexes with 2-(benzothienyl)pyridine and tetraphenylimidodiphosphinate ligands

Rational design and characterization of efficient deep-red iridium(III) complexes with 2-(benzothienyl)pyridine and tetraphenylimidodiphosphinate ligands

Synthesis, Photoluminescence, and Electroluminescence of Phosphorescent Dipyrido[3,2-a;2′3′-c]phenazine–Platinum(II) Complexes Bearing Hole-Transporting Acetylide Ligands

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