2-Phenyl-1,2,3-benzotriazole Ir(III) complexes with additional donor fragment for single-layer PhOLED devices
摘要:
Phosphorescent bis-cyclometallated iridium (III) complexes based on 2-phenyl-1,2,3-benzotriazole with additional donoric diphenylamine or carbazole moieties were synthesized, studied and tested as phosphorescent materials in the single-layer phosphorescent organic light emitting diodes. These single-layer devices were fabricated employing a simple technological approach, based upon the simultaneous vacuum deposition from one crucible of host material and the corresponding phosphorescent 1,2,3-triazole-based iridium complexes. Red and orange electrophosphorescent single-layer devices with current efficiencies of 5.3 cd/A and 6.8 cd/A respectively are reported. Results of the impedance spectroscopy suggest that the proposed method of formation of the working layer provides homogeneous distribution of molecular guest in the matrix of host. (C) 2012 Elsevier Ltd. All rights reserved.
Multifunctional red phosphorescent bis-cyclometallated iridium complexes based on 2-phenyl-1,2,3-benzotriazole ligand and carbazolyl moieties
摘要:
Multifunctional phosphorescent bis-cyclometallated iridium(III) complexes based on the 2-phenyl-1,2,3-benzotriazole moiety and bearing branched hole-transporting carbazole fragments were synthesized. The isolated compounds were found to be amorphous and expressed very good solubility. Introduction of flexible aliphatic chains of various lengths into the iridium complexes enabled manipulation of their glass transition temperature. The iridium complexes exhibited red phosphorescence emission at 650 nm with the lifetime of 5.7 mu s and phosphorescence quantum yields of 0.22 and 0.17 in solution and solid state, respectively, at room temperature. The shielding effect of the carbazolyl moieties on the concentration quenching of phosphorescence of the iridium centers was found to result in the increased excited state lifetime and quantum yield due to the suppressed exciton migration. Non-optimized OLED devices, based on the phosphorescent bis-cyclometallated iridium(III) complex without host material were fabricated and their electroluminescence properties were evaluated. (C) 2011 Elsevier Ltd. All rights reserved.
Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds of blue-emitting, durable, organo-electrouminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.
There are disclosed compound of Formula (I) or (II) wherein A
1
, A
2
, A
3
, A
4
and A
5
, which may be the same or different, represent N or CR
1
, R
9
represents -L-R
3
, in which L is a single bond or a linker group and R
3
represents hydrogen or a substituent and in addition, when an adjacent pair of A
1
-A
4
each represent CR
1
, then the adjacent carbon atoms, together with their substituents may form a ring B, when A
5
represents CR
1
, then A
5
and N—R
9
, together with their substituents may form a ring C, or a pharmaceutically acceptable salt thereof, in the manufacture of a medicament for the therapeutic and/or prophylactic treatment of Duchenne muscular dystrophy, Becker muscular dystrophy or cachexia.
Drug Combinations for the Treatment of Duchenne Muscular Dystrophy
申请人:Wynne Graham Michael
公开号:US20100168072A1
公开(公告)日:2010-07-01
Combinations comprising (or consisting essentially of) one or more compounds of the formula (I) or (II) with one or more ancillary compounds, to processes for preparing the combinations, and to various therapeutic uses of the combinations. Also provided are pharmaceutical compositions containing the combinations as well as a method of treatment of Duchenne muscular dystrophy, Becker muscular dystrophy or cachexia using the combinations.
Isocyanato-benzotriazole und ein Verfahren zu ihrer Herstellung
申请人:BAYER AG
公开号:EP0235660A1
公开(公告)日:1987-09-09
Neue Isocyanato-benzotriazole der allgemeinen Formel
in welcher
R1 für einen aromatischen Kohlenwasserstoffrest steht, der gegebenenfalls mit einer Isocyanatgruppe substituiert ist und/ oder gegebenenfalls weitere, inerte Substituenten aufweist,
R2, R und R4 für gleiche oder verschiedene Reste stehen und Wasserstoff oder inerte Substituenten bedeuten,
sowie ein Verfahren zur Herstellung der neuen Isocyanate durch Phosgenierung der ihnen zugrundeliegenden Amino- benzotriazole bzw. ihrer Addukte mit Chlorwasserstoff oder mit Kohlendioxid.
Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds are suitable components of blue-emitting, durable, organo-electrouminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.