Organic electroluminescent element material, organic electroluminescent element, display device and lighting device
申请人:Ikemizu Dai
公开号:US20070196690A1
公开(公告)日:2007-08-23
An organic electroluminescent element material represented by Formula (1),
Formula (1):
wherein Z is a heterocylcic ring comprising a substituent having a steric parameter value (Es) of −0.5 or less at the third atom of the ring counted from a nitrogen atom attached to Z, the nitrogen atom being counted as the first atom; and other symbols in Formula (1) are described in the specification.
Photolysis of a series of α-brominated ortho-xylenes in apolar solvents
作者:Daisy de B. Rezende、Ivan P. de Arruda Campos、Vicente G. Toscano、Luiz H. Catalani
DOI:10.1039/p29950001857
日期:——
The alpha-brominated ortho-xylenes have been subjected to 254-nm irradiation in deaerated benzene, isooctane and benzene-cyclohexene. The product analysis revealed that homolysis of the C-Br bond is followed by a series of hydrogen abstraction and radical recombination reactions resulting in xylenes more and less brominated than the starting compound. The less brominated products are formed with higher quantum yield when cyclohexene is present, due to hydrogen abstraction by the o-benzyl radical formed initially, together with cyclohexene dimers. Additionally, the formation of 2-bromo-2,4,4-trimethylpentane is observed when isooctane is the solvent. The quantum yields observed for the photolysis of 1 and 2 are higher in benzene than in isooctane, suggesting sensitization by benzene. A biradical intermediate of the type o-quinodimethane was expected in the case of (a) photolysis of the o-benzyl radical formed (biphotonic process) or (b) intramolecular hydrogen abstraction. However, the addition of cyclohexene failed to produce the expected Diels-Alder adduct; The synthesis of the novel alpha,alpha-dibromo-o-xylene 3 is reported.
ORGANIC ELECTROLUMINESCENCE ELEMENT, LIGHTING DEVICE AND DISPLAY DEVICE
申请人:Katakura Rie
公开号:US20100045171A1
公开(公告)日:2010-02-25
Disclosed is an organic electroluminescent device having high external quantum efficiency and long emission life. Also disclosed are an illuminating device and a display, each comprising such an organic electroluminescent device. The organic electroluminescent device is characterized by comprising at least an anode and a cathode on a supporting substrate, while having at least one light-emitting layer between the anode and the cathode. The organic electroluminescent device is also characterized by containing a polymer which at least partially contains a compound A having a partial structure represented by the general formula (a) below and a reactive group, and is obtained by polymerizing the compound A through the reactive group. (In the formula, Ar1 and Ar2 respectively represent an aromatic ring.)
ORGANIC ELECTROLUMINESCENCE ELEMENT, NEW COMPOUND FOR THE SAME, DISPLAY DEVICE AND LIGHTING DEVICE USING THE SAME
申请人:KATAKURA Rie
公开号:US20110006670A1
公开(公告)日:2011-01-13
Disclosed is an organic electroluminescence element comprising an anode, a cathode and a plurality of organic compound layers between the anode and the cathode, provided that one of the organic compound layers is a light emitting layer containing a phosphorescence emitting compound,
wherein at least one of the organic compound layers contains a compound represented by Formula (1),
wherein, X represents O or S; Y
1
to Y
3
each represents a hydrogen atom, a substituent or a group represented by Formula (A) disclosed in the specification, provided that at least two of Y
1
to Y
3
are groups represented by Formula (A), not all of Y
1
to Y
3
are the same group, and at least one of the groups represented by Formula (A) has Ar of a carbazolyl group, or an azacarbazolyl group containing 2 to 5 nitrogen atoms.