Photoluminescent properties of heteroleptic cyclometalated platinum(II) complexes bearing 1,3-bis(3,4-dibutoxyphenyl)propane-1,3-dionate as an ancillary ligand

Tsujimoto, Hidetaka; Yagi, Shigeyuki; Honda, Yuichiro; Terao, Hiroto; Maeda, Takeshi; Nakazumi, Hiroyuki; Sakurai, Yasuhisa

doi:10.1016/j.jlumin.2009.08.006

Cited by 41 publications

(45 citation statements)

References 28 publications

(34 reference statements)

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“…1,10-phenanthroline, 2,2′-bipyridine, 4,4′-di-tert-butyl-2,2′-Scheme 1 Synthetic routes of Ir(III) complexes 3a−3d bipyridine and picolinic acid were obtained from Energy Chemical. The target ligand, 1-(benzo[b]thiophen-2-yl)isoquinoline (1), was prepared according to modification of literature procedures [31]. All solvents were dried using standard procedures.…”

Section: Methodsmentioning

confidence: 99%

Deep-Red Phosphorescent Iridium(III) Complexes Containing 1-(Benzo[b] Thiophen-2-yl) Isoquinoline Ligand: Synthesis, Photophysical and Electrochemical Properties and DFT Calculations

Zou

Yang

et al. 2014

J Fluoresc

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Four new bis-cyclometalated iridium(III) complexes, [Ir(btq) 2phen] [PF6] (3a), [Ir(btq) 2bpy] [PF6] (3b), [Ir(btq) 2dtbipy] [PF6] (3c) and [Ir(btq) 2pic] (3d) (btq = 1-(benzo[b] thiophen-2-yl) isoquinoline, phen = 1,10-phenanthroline, bpy = 2,2'-bipyridine, dtbipy = 4,4'-di-tert-butyl-2,2'-bipyridine, pic = picolinic acid) have been synthesized and fully characterized. The crystal structure of 3a has been determined by X-ray analysis. The photophysical and electrochemical properties of these new complexes 3a - 3d have been studied. The photoluminescence spectra of all Ir(III) complexes exhibit deep-red emission maxima at 682, 682, 683 and 698 nm, respectively. The most representative molecular orbital energy-level diagrams and the lowest energy electronic transitions of 3a - 3d have been calculated with density functional theory (DFT) and time-dependent DFT (TD - DFT). The results show that the pic ancillary ligand of complex 3d influences the absorption and emission energies with a further red-shift relative to other three complexes 3a - 3c.

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Section: Methodsmentioning

confidence: 99%

Deep-Red Phosphorescent Iridium(III) Complexes Containing 1-(Benzo[b] Thiophen-2-yl) Isoquinoline Ligand: Synthesis, Photophysical and Electrochemical Properties and DFT Calculations

Zou

Yang

et al. 2014

J Fluoresc

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“…The mononuclear platinum(II) complexes (X-dbfp)PtCl(X-dbfp-H) were prepared as precursors for the target cyclometalated complexes, according to the reported procedure [13].…”

Section: = 4(5)-f 4(5)-ch 3 4(5)-cf 3 )mentioning

confidence: 99%

“…This complex was prepared from (5-dbfp)PtCl(5-dbfp-H) [13] according to the same procedure as Pt-1a, affording a yellow powder (yield, 83%); 1 .05 (dt, J = 0.9 and 5.9 Hz, 1H); 13 …”

Section: (2-(dibenzo[bd]furan-4-yl)-5-(trifluoromethyl)pyridinate-nmentioning

confidence: 99%

“…The platinum(II) complexes Pt-1-3 were synthesized according to the reported procedure (Scheme 1) [13]. Each dbfp-based ligand X-dbfp-H (X; 4(5)-F, 4(5)-CH 3 , 4(5)-CF 3 Insert Scheme 1 here.…”

Section: Synthesismentioning

confidence: 99%

“…In particular, solution-processed polymer light-emitting diodes (PLEDs) [7][8][9] have been receiving considerable attention due to availability of largearea devices, low-cost device fabrication, and efficient use of constituent materials. To obtain high performance PLEDs, phosphorescent organometallic complexes such as cyclometalated platinum(II) [10][11][12][13] and iridium(III) [14][15][16][17] complexes have often been employed as emitting dopants because the triplet excitons statistically generated via hole-electron recombination are combined with those from the excited singlet state via efficient intersystem crossing to achieve internal quantum efficiencies up to 100% [18][19][20]. Among them, heteroleptic cyclometalated platinum(II) complexes have been eagerly studied along with heteroleptic bis-and homoleptic tris-cyclometalated iridium(III) complexes, and have often been employed as emitting dopants for PLEDs [21,22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Substituent effect on photo- and electroluminescence properties of heteroleptic cyclometalated platinum(II) complexes based on a 2-(dibenzo[b,d]furan-4-yl)pyridine ligand

et al. 2016

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Strong Circularly Polarized Phosphorescence of Achiral Pt(II) Metallomesogen Induced by Using a Chiral Co‐Assembly Strategy

Li,

Zou,

et al. 2024

Advanced Optical Materials

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The high planarity and heavy‐atom effect of Pt(II) metallomesogens promote their stacking in the aggregated state and highly efficient phosphorescence. This makes them promising candidate materials for circularly polarized phosphorescence (CPP) triggered by using a chiral co‐assembly strategy. In this paper, a nematic phase, achiral robot‐like Pt(II) metallomesogen (TFPt) is synthesized, which combines two anchored chiral binaphthyl inducers (R/S1 or R/S2) to construct cholesteric liquid crystal (N*‐LC) co‐assemblies (R/S1)n‐(TFPt)1‐n and (R/S2)n‐(TFPt)1‐n via intermolecular interactions. The resultant N*‐LC chiral co‐assemblies (R1)0.03‐(TFPt)0.97 and (R2)0.03‐(TFPt)0.97 exhibit the strongest CPP emission with high dissymmetry factors (gem) of up to 0.18 and 0.27, respectively, stemming from the formation of regular helical nanofibers on spin‐coated films via co‐assembly process after thermal annealing at 165 °C.

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Photoluminescent properties of heteroleptic cyclometalated platinum(II) complexes bearing 1,3-bis(3,4-dibutoxyphenyl)propane-1,3-dionate as an ancillary ligand

Cited by 41 publications

References 28 publications

Deep-Red Phosphorescent Iridium(III) Complexes Containing 1-(Benzo[b] Thiophen-2-yl) Isoquinoline Ligand: Synthesis, Photophysical and Electrochemical Properties and DFT Calculations

Deep-Red Phosphorescent Iridium(III) Complexes Containing 1-(Benzo[b] Thiophen-2-yl) Isoquinoline Ligand: Synthesis, Photophysical and Electrochemical Properties and DFT Calculations

Substituent effect on photo- and electroluminescence properties of heteroleptic cyclometalated platinum(II) complexes based on a 2-(dibenzo[b,d]furan-4-yl)pyridine ligand

Strong Circularly Polarized Phosphorescence of Achiral Pt(II) Metallomesogen Induced by Using a Chiral Co‐Assembly Strategy

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