Gas-phase generation and cyclisation reactions of imidoyl radicals
作者:Rino Leardini、Hamish McNab、Daniele Nanni、Anton G. Tenan、Andrew Thomson
DOI:10.1039/c1ob06228j
日期:——
Some 1,2-diarylimidoyl radicals were generated in the gas-phase by intramolecular radical translocation from ortho-imino-aryloxyl radicals, in turn generated under flashvacuumpyrolysis (FVP) conditions. The imidoyls reacted with XRortho′-substituents in the N-aryl group to give (in most cases) modest yields of cyclisation products. Depending on the nature of the bridging atom (X), the formation of
ORGANIC ELECTROLUMINESCENT DEVICE HAVING AN AZATRIPHENYLENE DERIVATIVE
申请人:Zheng Shiying
公开号:US20090115316A1
公开(公告)日:2009-05-07
Azatriphenylene derivatives and their use in the electron-transporting layer of an electroluminescent device that comprises an anode, a spaced-apart cathode, and at least one electron-transporting layer disposed between the spaced-apart anode and cathode. Such EL devices provide lower drive voltage, improved power efficiency, and longer operational lifetime.
Organic element for low voltage electroluminescent devices
申请人:Begley J. William
公开号:US20070092755A1
公开(公告)日:2007-04-26
An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and comprises; (i) a further layer located between the cathode and the light emitting layer, containing (a) 10 vol % or more of a carbocyclic fused ring aromatic compound, and (b) at least one salt or complex of a Group IA, IIA, IIIA and IIB element of the Periodic Table, and
(ii) an additional layer, located between the anode and the light emitting layer, containing a compound of Formula (8)
wherein: each R independently represents hydrogen or an independently selected substituent, at least one R representing an electron-withdrawing substituent having a Hammett's sigma para value of at least 0.3. Such devices exhibit reduce drive voltage while maintaining good luminance.
PHOSPHORESCENT OLED HAVING DOUBLE EXCITON-BLOCKING LAYERS
申请人:Liao Liang-Sheng
公开号:US20080315753A1
公开(公告)日:2008-12-25
An organic light-emitting device comprising an anode; a cathode; a hole-transporting layer disposed between the anode and the cathode; a phosphorescent light-emitting layer disposed between the hole-transporting layer and the cathode, wherein the phosphorescent light-emitting layer includes at least one host and at least one phosphorescent dopant; a first exciton-blocking layer disposed between the hole-transporting layer and the phosphorescent light-emitting layer; wherein the first exciton-blocking layer has a triplet energy greater than the triplet energy of the host in the phosphorescent light-emitting layer; and a second exciton-blocking layer disposed between the first exciton-blocking layer and the phosphorescent light-emitting layer, wherein the second exciton-blocking layer is in contact with the phosphorescent light-emitting layer, and wherein the second exciton-blocking layer has a triplet energy less than the triplet energy of the first exciton-blocking layer.