6588-06-3Relevant academic research and scientific papers
Synthesis and luminescence properties of two Ir(iii) complexes containing styrene-modified phenylpyridine ligands
Wu, Shaoguang,Wang, Youjia,Zhao, Yuling,Wang, Ruidong,Hailin, Ma,Yu, Tianzhi
, p. 3311 - 3318 (2021)
Two new green-emitting iridium(iii) complexes containing styrene-modified phenylpyridine ligands, namely, Ir(ppy-VB)2(acac) (Ir-A) and Ir(ppy-VB)2(Stpip) (Ir-S), where ppy-VB = 2-(4-(((4-vinylbenzyl)oxy)methyl)phenyl)pyridine, acac =
Iridium complex with main ligand containing dibenzoheterocycle or aza-dibenzoheterocycle and application
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, (2021/07/17)
The invention belongs to the technical field of electroluminescent materials, and relates to a novel iridium complex with a main ligand containing dibenzoheterocycle or aza-dibenzoheterocycle and thiobis(diaryl)/heteroaryl phosphor imide as an auxiliary ligand. The dibenzoheterocycle or aza-dibenzoheterocycle and thiobis(diaryl)/heteroaryl phosphor imide in the iridium complex molecule are beneficial to regulation and control of the luminescent color of the material, increase of the stability of the material, improvement of the efficiency of the device and reduction of the roll-off of the efficiency. The iridium complex disclosed by the invention is easy to sublimate and purify, high in yield and high in color purity, and a prepared device is excellent in performance and has potential application value in the field of OLED illumination and display.
Highly efficient green and red electroluminescence with an extremely low efficiency roll-off based on iridium(iii) complexes containing a bis(diphenylphorothioyl)amide ancillary ligand
Ma, Xiao-Feng,Xia, Jing-Cheng,Yan, Zhi-Ping,Luo, Xu-Feng,Wu, Zheng-Guang,Zheng, You-Xuan,Zhang, Wen-Wei
supporting information, p. 2570 - 2576 (2019/03/08)
In this study, two iridium(iii) complexes named Ir(tfpmd)2(stpip) and Ir(tfpqz)2(stpip) were synthesized, in which 2-(4-(trifluoromethyl)phenyl)pyrimidine (tfpmd) or 4-(4-(trifluoromethyl)phenyl)quinazoline (tfpqz) was used as the cyclometalated ligand and bis(diphenylphorothioyl)amide (stpip) as the ancillary ligand, respectively. The Ir(tfpmd)2(stpip) complex shows green light, peaking at 501 nm with a high phosphorescence quantum efficiency of 0.83. The organic light-emitting diode (OLED) with a double-emissive-layer structure using the (tfpmd)2(stpip) complex displays good performances with a maximum luminance (Lmax) above 39000 cd m-2, a maximum current efficiency (ηc,max) of 90.5 cd A-1, a maximum external quantum efficiency (EQEmax) of 30.8% and an extremely low efficiency roll-off. Even at the high luminance of 10000 cd m-2, the efficiency roll-off ratio is below 5%. The Ir(tfpqz)2(stpip) complex shows red light, peaking at 624 nm, and its corresponding device with a single-emissive-layer structure also shows decent characteristics with a Lmax of 33732 cd m-2, a ηc,max of 28.6 cd A-1, an EQEmax of 18.3% and also a very low efficiency roll-off. These results suggest that the green and red Ir(iii) complexes with bis(diphenylphorothioyl)amide as the ancillary ligand have the potential for use in high-efficiency OLEDs with a low efficiency roll-off.
Efficient sky-blue OLEDs with extremely low efficiency roll-off based on stable iridium complexes with a bis(diphenylphorothioyl)amide ligand
Zhang, Lin,Yan, Zhi-Ping,Zheng, You-Xuan
supporting information, p. 9744 - 9750 (2019/07/09)
The lack of efficient blue-emitting materials is one of the most important issues faced when extending the application of organic light-emitting diodes (OLEDs). Therefore, in this study, the ancillary ligand bis(diphenylphorothioyl)amide (Stpip) was utili
Iridium(iii) phosphors with bis(diphenylphorothioyl)amide ligand for efficient green and sky-blue OLEDs with EQE of nearly 28%
Xia, Jing-Cheng,Liang, Xiao,Yan, Zhi-Ping,Wu, Zheng-Guang,Zhao, Yue,Zheng, You-Xuan,Zhang, Wen-Wei
, p. 9010 - 9016 (2018/09/09)
In this study, a new ligand, bis(diphenylphorothioyl)amide (Stpip), containing phosphorus-sulfur (PS) bonds was synthesized as an ancillary ligand. Four iridium(iii) complexes (Ir(ppy)2(Stpip), Ir(tfppy)2(Stpip), Ir(ttppy)2/sub
Bridge cleavage reactions of late transition-metal dimers with [Ph2P(E)NP(E′)Ph2]- (E = E′ = S or Se; E = O or S, E′ = S or Se)
Bhattacharyya, Pravat,Slawin, Alexandra M. Z.,Smith, Martin B.
, p. 2467 - 2475 (2007/10/03)
Reaction of the dinuclear complexes [{Pd(μ-Cl)(L-L)}2] (L-L = C9H12N or C12H12N), [{Pt(μ-OMe)-(C8H12OMe)}2], [{RuCl(μ-Cl)(η6-p-MeC6H4Pri)} 2] or [(RhCl(μ-Cl)(η5-C5Me5)}2] with K[Ph2P(E)NP(E)Ph2] (E = S or Se) in thf gave the corresponding bridge cleaved, mononuclear compounds [Pd(L-L)(Ph2P(E)NP(E)-Ph2-E,E′}], [Pt(C8H12OMe){Ph2P(E)NP(E)Ph 2-E,E′}], [RuCl{Ph2P(E)NP(E)Ph2-E,E′}(η 6-p-MeC6H4Pri)] or [Rh(η5-C5Me5)Cl{Ph 2P(E)NP(E)Ph2-E,E′}] in high yields (64-97%). Transmetallation of K[Ph2P(E)NP(E)Ph2] (E = S or Se) with [{Pd(μ-Cl)(η3-C3H5)}2] in a 1:1 ratio gave [Pd(η3-C3H5){Ph2P(E)NP(E)Ph 2-E,E′)]. In contrast, reaction of the potassium salt K[Ph2P(O)NP(E)Ph2] (E = S or Se) with [{Pd(μ-Cl)(η3-C3H5)}2] under analogous conditions gave instead the dimeric species [{Pd(η3-C3H5)[Ph 2P(O)NP(E)Ph2-E]}2]. All new compounds have been characterised by a combination of multinuclear NMR [1H, 31P-{1H}, 195Pt-{1H}] and IR spectroscopy, elemental analyses and in four cases by single crystal X-ray crystallography. The six-membered ME2P2N metallacycles [Pd(C9H12N)(Ph2P(Se)NP(Se)Ph 2-Se,Se′)], [Pt(C8H12OMe){Ph2P(S)NP(S)Ph 2-S,S′}] and [Pd(η3-C3H5)(Ph 2P-(S)NP(S)Ph2-S,S′)] all adopt pseudo-boat conformations. In contrast [{Pd(η3-C3H5)[Ph 2P(O)NP(Se)Ph2-Se]}2] is binuclear with a central four-membered Pd2Se2 core and two pendant P(O)Ph2 moieties. The synthesis, characterisation and preliminary complexation studies of a new potassium salt, K[Ph2P(S)NP(Se)Ph2], prepared by deprotonation of Ph2P(S)NHP(Se)Ph2 with KOBut are also described.
