31239-06-2Relevant academic research and scientific papers
Synthesis, photoluminescence and electroluminescence of one iridium complex with 2-(2,4-difluorophenyl)-4-(trifluoromethyl)pyrimidine and tetraphenylimidodiphosphinate ligands
Zhou, Yong-Hui,Xu, Jing,Wu, Zheng-Guang,Zheng, You-Xuan
, p. 226 - 231 (2017)
Using 2-(2,4-difluorophenyl)-4-(trifluoromethyl)pyrimidine as main ligand and tetraphenylimidodiphosphinate as ancillary ligand, one iridium complex was synthesized. This complex shows a green emission peaking at 543 nm with a quantum efficiency yield as
New class of P-stereogenic chiral Br?nsted acid catalysts derived from chiral phosphinamides
Han, Zhengxu S.,Wu, Hao,Qu, Bo,Wang, Yuwen,Wu, Ling,Zhang, Li,Xu, Yibo,Wu, Linglin,Zhang, Yongda,Lee, Heewon,Roschangar, Frank,Song, Jeff J.,Senanayake, Chris H.
supporting information, p. 1834 - 1837 (2019/06/17)
A new class of N–H Br?nsted acid organocatalysts that feature P-stereogenic chirality was developed. These catalysts were prepared from P-stereogenic chiral phosphinamides and show similar reactivity to BINOL derived phosphoric acid toward the reduction of quinolines via transfer hydrogenation. It shows that stereoselectivity is induced by the P-chiral environment that is created by the substituents attached to the phosphorous atom, which can be readily tuned and modified.
Syntheses, photoluminescence and electroluminescence of two novel platinum(ii) complexes
Lu, Guang-Zhao,Li, Yan,Jing, Yi-Ming,Zheng, You-Xuan
, p. 150 - 157 (2016/12/28)
Two new platinum(ii) cyclometalated complexes with 2-(4-trifluoromethyl)phenylpyridine (4-tfmppy) as the main ligand and tetraphenylimidodiphosphinate (tpip) (Pt-tpip) and tetra(4-fluorophenyl)imidodiphosphinate (ftpip) (Pt-ftpip) as ancillary ligands wer
Photoluminescence and electroluminescence of four platinum complexes with trifluoromethyl-substituted 2-phenylpyridine and tetraphenylimidodiphosphinate ligands
Lu, Guang-Zhao,Han, Hua-Bo,Li, Yan,Zheng, You-Xuan
, p. 33 - 41 (2017/04/24)
Four cyclometalated platinum complexes with trifluoromethyl-substituted 2-phenylpyridine at different positions on its phenyl group as the main ligands and tetraphenylimidodiphosphinate as the ancillary ligand, Pt1-Pt4 (Pt1 is a trifluoromethyl-free compl
Efficient organic light-emitting diodes with low efficiency roll-off at high brightness using iridium emitters based on 2-(4-trifluoromethyl-6-fluoro phenyl)pyridine and tetraphenylimidodiphosphinate derivatives
Teng, Ming-Yu,Zhang, Song,Jin, Yi-Ming,Li, Tian-Yi,Liu, Xuan,Xu, Qiu-Lei,Lin, Chen,Zheng, You-Xuan,Wang, Leyong,Zuo, Jing-Lin
, p. 105 - 113 (2014/03/21)
Using 2-(4-trifluoromethyl-6-fluorophenyl)pyridine (tfmfppy) as the cyclometalated ligand and tetraphenylimidodiphosphinate (tpip) derivatives as ancillary ligands, three iridium complexes (1: Ir(tfmfppy)2tpip; 2: Ir(tfmfppy)2ftpip, ftpip = tetra(4-fluorophenyl)imidodiphosphinate; 3: Ir(tfmfppy)2tfmtpip, tfmtpip = tetra(4-trifluoromethylphenyl) imidodiphosphinate) showing phosphorescence at 514, 513 and 508 nm in CH 2Cl2 were synthesized, respectively. By using these complexes as emitters, the organic light emitting diodes with the concise configuration of indium tin oxides/1,1-bis(4-(di-p-tolyl-amino)phenyl) cyclohexane (60 nm)/1 or 2 or 3: bis[3,5-di(9H-carbazol-9-yl)phenyl]di-phenyl silane (8 wt%, 30 nm)/1,3,5-tri(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl (90 nm)/lithium fluoride (1 nm)/aluminium (100 nm) showed bright green light with maximum luminance higher than 40 000 cd m-2. The maximum current efficiency (ηc) values for 1, 2 and 3 based devices (GIr1, GIr2 and GIr3) were 77.49, 66.57, and 53.26 cd A-1 at relatively high brightness of 8025, 5286 and 5169 cd m-2, respectively. In addition, the efficiency roll-off ratios from the peak efficiency to the brightness of 10 000 cd m-2 are less than 10% for all the devices. We believe that the good electron mobilities of the phosphorescent emitters lead to the high devices efficiency and low efficiency roll-off. The results suggest that these complexes have potential application in organic light emitting diodes.
Rare-earth-metal complexes bearing phosphazene ancillary ligands: Structures and catalysis toward highly trans-1,4-selective (co)polymerizations of conjugated dienes
Rong, Weifeng,Liu, Dongtao,Zuo, Huiping,Pan, Yupeng,Jian, Zhongbao,Li, Shihui,Cui, Dongmei
, p. 1166 - 1175 (2013/05/09)
The bis-arylated phosphazene compounds [HN(PPh2NAr)2] (Ar = phenyl (HL1), 2,6-dimethylphenyl (HL2), 2,6-diisopropylphenyl (HL3)) and the imidodiphosphinate compound HN(PPh2O)2 (HL4) have been prepared via the Staudinger reaction. Treatment of the neutral compounds HL1, HL 2, and HL3 with Ln(CH2SiMe3) 3(THF)2 (Ln = Sc, Y, Lu) generated the solvent-free bis(alkyl) complexes L1Ln(CH2SiMe3)2 (Ln = Sc (1a), Y (1b), Lu (1c)), L2Sc(CH2SiMe 3)2 (2a), L3Y(CH2SiMe 3)2 (3b), and L3Lu(CH2SiMe 3)2 (3c), respectively. The reaction between HL 4 and Y(CH2SiMe3)3(THF)2 gave the rare zwitterionic complex 4b. Lithiation of the ligand HL1 by nBuLi followed by a metathesis reaction with Nd(BH4) 3(THF)3 afforded the corresponding complex L 1Nd(BH4)2(THF)2 (5). Complexes 1 upon incorporation of [Ph3C][B(C6F5) 4] and AliBu3 led to ternary systems that initiated isoprene polymerization with high activities, among which complex 1a was the first example of a scandium catalytic precursor providing trans-1,4-selectivity (90.0%), while the lutetium analogue 1c had medium trans-1,4-selectivity (54.3%) and the yttrium complex 1b exhibited high cis-1,4-selectivity (76.3%). The ternary system based on the zwitterion 4b displayed the highest activity for the isoprene polymerization among these complexes and gave cis-1,4-regularity- enriched polyisoprene (70.6%). Highly stereospecific homopolymerizations of isoprene (trans-1,4-content: 97.0%) and butadiene (trans-1,4-content: 94.0%) were achieved by using the borohydrido complex 5 upon the activation of dibutylmagnesium. The copolymerization of isoprene and butadiene with 1a/[Ph3C][B(C6F5)4/AliBu 3] gave randomly arranged trans-1,4-regulated polybutadiene and polyisoprene sequences. The kinetics study displayed competitive polymerization rates of rBD = 2.89 and rIP = 0.41. The thermal behaviors of the (co)polymers were investigated.
Syntheses, photoluminescence, and electroluminescence of iridium(III) complexes with fluorinated 2-phenylpyridine as main ligands and tertraphenylimidodiphosphinate as ancillary ligand
Wang, Cheng-Cheng,Jing, Yi-Ming,Li, Tian-Yi,Xu, Qiu-Lei,Zhang, Song,Li, Wei-Nan,Zheng, You-Xuan,Zuo, Jing-Lin,You, Xiao-Zeng,Wang, Xiu-Qiang
, p. 5683 - 5693 (2013/12/04)
Three green-emitting heteroleptic iridium complexes with 2-(4,5,6-trifluorophenyl)pyridine, 2-(3,4,6-trifluorophenyl)pyridine, and 2-(3,4,5-trifluorophenyl)pyridine as main ligands and tetraphenylimidodiphosphinate (tpip) as the ancillary ligand were synt
Syntheses, photoluminescence, and electroluminescence of a series of iridium complexes with trifluoromethyl-substituted 2-phenylpyridine as the main ligands and tetraphenylimidodiphosphinate as the ancillary ligand
Xu, Qiu-Lei,Wang, Cheng-Cheng,Li, Tian-Yi,Teng, Ming-Yu,Zhang, Song,Jing, Yi-Ming,Yang, Xu,Li, Wei-Nan,Lin, Chen,Zheng, You-Xuan,Zuo, Jing-Lin,You, Xiao-Zeng
, p. 4916 - 4925 (2013/06/05)
Five bis-cyclometalated iridium complexes with tifluoromethyl-substituted 2-phenylpyridine (ppy) at different positions of its phenyl group as the main ligands and tetraphenylimidodiphosphinate (tpip) as the ancillary ligand, 2-6 (1 is a trifluoromethyl-f
Probing solid iminobis(diorganophosphine chalcogenide) systems with multinuclear magnetic resonance
Demko, Bryan A.,Wasylishen, Roderick E.
experimental part, p. 348 - 360 (2009/10/23)
A 31P and 77Se solid-state NMR investigation of the iminobis(diorganophosphine chalcogenide) HN(R2PE)2 (R = Ph, iPr; E = O, S, Se) systems is presented. The NMR results are discussed in terms of the k
Assembly of hydrophobic shells and shields around lanthanides
Magennis, Steven W.,Parsons, Simon,Pikramenou, Zoe
, p. 5761 - 5771 (2007/10/03)
Luminescent lanthanide complexes have been developed, based on the assembly of bulky ligands around the lanthanide ion, to provide shell-type protection of the ion from coordinated solvent molecules. Aryl-functionalised imidodiphosphinate ligands (tpip an
