76462-38-9Relevant articles and documents
The novel synthesis of tris-cyclometalated iridium(III) complexes for saturated red organic light-emitting diodes with low efficiency roll-off
Liu, Lei,Mei, Qun-bo,Tong, Bi-hai,Yang, Jiu-chang,Ye, Shang-hui
, (2021/04/12)
A series of homoleptic tris-cyclometalated iridium(III) complexes (Ir2–Ir4) have been synthesized by the direct functionalization of a template complex (Ir1) through a Suzuki cross-coupling reaction. We revealed the coordination arrangement of Ir4 by single X-ray structural analysis and the molecule showed a facial configuration. All the complexes showed red emission with emission maxima at 591–624 nm, short lifetimes of 1.38–2.19 μs and photoluminescence quantum yields in the range of 28–42%. Most importantly, the full width at half maximum (FWHM) of the emission maxima of these complexes was less than 48 nm. These complexes exhibited good thermal stability with Td of 368–400 °C. Density functional theory (DFT) calculations were used to study the electronic structure information of these iridium(III) complexes. Organic light emitting diodes (OLEDs) based on these complexes as dopant emissive materials were fabricated. Among them the device based on Ir1 has a maximum current efficiency and external quantum efficiency of 15.67 cd A?1 and 10.06%, respectively. The device with low efficiency and EQE roll-off that 97–99% efficiency and EQEmax maintained at 1000 cd m?2. Meanwhile, the CIE(x,y) coordinates of these extended complexes were (0.65, 0.33), (0.66, 0.33) and (0.68, 0.31), respectively. These data were very close to the standard red emission required by National Television System Committee (NTSC) (0.67, 0.33). These results suggest that these materials have potential application in OLEDs.
Synthesis and evaluation of anti-proliferative activity of 1,4-disubstituted phthalazines
Abouzid, Khaled A. M.,Khalil, Nadia A.,Ahmed, Eman M.
, p. 3288 - 3293,6 (2020/08/20)
A series of new phthalazine derivatives 3a-i and 4a-c were synthesized via the reaction of 1-chlorophthalazine derivative 2 with either N-substituted-piperazines, primary or their secondary amines. The structure of the synthesized, new compounds were characterized by spectral data. The anti-proliferative activity on human breast cancer cell line MCF-7 of the synthesized compounds was determined. The results showed that six of the test compounds (3a, 3g, 3i, and 4a-c) displayed potent cytotoxic activity ranging from 1.4 to 2.3 μmol.
N-AMINOPHTHALIMIDE AS PRECURSOR FOR 4-ARYLPHTHALAZ-1-ONES
Ismail, Mohamed Fekry,Kandile, Nadia Gharib
, p. 251 - 253 (2007/10/02)
Reaction of N-aminophthalimide of N-arylideneaminophthalimides with hydrocarbons under Friedel-Crafts conditions offer a new parthway for the preparation of 4-arylphthalaz-1-ones (3).