Mitsubishi Chemical Corporation

Kazuki Okabe

Koichiro Iida

Masayoshi Yabe

Kyoko Endo

Hideki Gorohmaru

Tomoyuki Ogata

Tomohiro Abe

Hideki Sato

Atsushi Takahashi

Yanjun Li

Yuichiro Kawamura

Koichi Ishibashi

Hironori Ishikawa

Tomokazu Umemoto

Mitsuru Tanamura

Asato Tanaka

Futoshi Tanaka

Yoshiko Kajiyama

Masako Takeuchi

Haruhiko Kusaka

Kazuhiro Nagayama

Yoshimasa Bando

Ichiro Imada

Yasuyuki Tsurutani

Misako Okabe

Mayuko Nara

Itsumi Nishio

Yuichiro Mitsubishi Chemical Group Scien Kawamura

The present invention provides with an electron-accepting compound having a structure of the following formula (1):

Electron-accepting compound and composition for charge-transporting film, and luminescent element using same

The present invention provides with an electron-accepting compound having a structure of the following formula (1): 

A composition for an organic electroluminescent device is a composition for forming an organic light emitting layer of an organic electroluminescent device by wet coating process. The composition contains a phosphorescent material, a charge transport material, and a solvent, in which the phosphorescent material and the charge transport material are each an unpolymerized organic compound, and the first oxidation potential of the phosphorescent material E, the first reduction potential of the phosphorescent material E, the first oxidation potential of the charge transporting material E, and the first reduction potential of the charge transporting material Esatisfy the following condition: E+0.1&#x2266;E&#x3c;E&#x2266;E&#x2212;0.1 or E+0.1&#x2266;E&#x3c;E&#x2266;E&#x2212;0.1.

Organic electric field light emitting element and production therefor

To provide an organic electroluminescent element having a low driving voltage, high current efficiency and high voltage efficiency. An organic electroluminescent element comprising an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a mixed layer containing a light-emitting low molecular compound and/or a charge-transporting low molecular compound in a film containing an insolubilized polymer obtained by insolubilizing an insolubilizing polymer, and, adjacent to the mixed layer, a layer containing a light-emitting low molecular compound and a charge-transporting low molecular compound and not containing an insolubilized polymer.

Organic electroluminescent element, organic EL display device and organic EL illumination

An object of the present invention is to provide a conjugated polymer which has a high hole transportability and is excellent in solubility and depositability. Another object of the present invention is to provide an organic electroluminescence element which is capable of low voltage driving and has a high luminous efficiency and drive stability. The conjugated polymer of the present invention is a conjugated polymer containing a specific structure as the repeating unit, where the conjugated polymer contains an insolubilizing group as a substituent, the weight average molecular weight (Mw) is 20,000 or more and the dispersity (Mw/Mn) is 2.40 or less.

Conjugated polymer, insolubilized polymer, organic electroluminescence element material, composition for organic electroluminescence element, polymer production process, organic electroluminescence element, organic EL display and organic EL lighting

The present invention relates to an organic electroluminescent element which comprises two or more hole injection/transport layers each formed by a wet film formation method using a composition containing, as a hole-injecting/transporting compound, an arylamine polymer compound that has a repeating unit having a triarylamine structure therein, in which when the number of atoms present on the path which is the smallest in the number of atoms present thereon, of the paths which each connect the nonaromatic tertiary nitrogen atoms contained in any two triarylamine structures present in each polymer compound, is taken as N: the minimum number of atoms between nitrogen atoms in the compound, then the N in each hole injection/transport layer is in a specific state.

Organic electroluminescent element, composition for organic electroluminescent element, and organic electroluminescent device

The present invention relates to an organic electroluminescence element which comprises an anode, a luminescent layer, two or more electron transport layers and a cathode, in this order, wherein at least one of the two or more electron transport layers adjoins the luminescent layer, the luminescent layer contains a luminescent material and a charge transport material, the electron transport layer which adjoins the luminescent layer contains a charge transport material, the charge transport material contained in the luminescent layer and the charge transport material contained in the electron transport layer which adjoins the luminescent layer may be the same material or may be different material, and the specific electron affinities EA1, EA2 and EA3, and the specific work function WF satisfy the specific relationship.

Organic electroluminescence element, organic electroluminescence device, organic el display device, and organic el lighting

An object of the invention is to provide a polymer compound having a high hole transport capacity, excellent in electrochemical stability, and suitable to film formation according to a wet film formation method. Another object of the invention is to provide an organic electroluminescence element having a high current efficiency, a low drive voltage, and a long derive lifetime. The polymer compound has a crosslinking group bonding to the arylamine moiety in the repeating unit via at least one single bond therebetween.

Polymer compound, net-like polymer compound produced by crosslinking the polymer compound, composition for organic electroluminescence element, organic electroluminescence element, organic EL display, and organic EL lighting

A subject for the invention is to provide a charge-transporting polymer having high hole-transporting ability and excellent solubility and film-forming properties and a composition for organic electroluminescent element which contains the charge-transporting polymer. Another subject for the invention is to provide an organic electroluminescent element which has a high current efficiency and high driving stability. The charge-transporting polymer comprises a group represented by the following formula (1) as a side chain: wherein in formula (1), the benzocyclobutene ring may have one or more substituents. The substituents may be bonded to each other to form a ring. The spacer represents a group which links the benzocyclobutene ring to the main chain of the charge-transporting polymer through three or more single bonds.

Charge-transporting polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display, and organic EL lighting

To provide an organic electroluminescence device that can suppress rise in the driving voltage at the time of constant-current energization and degradation in brightness at the time of energization, and thus excels in its driving lifetime, the organic electroluminescence device comprises: a substrate; an anode and a cathode overlying the substrate; and a plurality of organic layers disposed between the anode and the cathode, and the plurality of organic layers comprise at least: a first layer formed by means of polymerization of a polymerizable compound; and a second layer disposed adjacently to the first layer and containing a polymerization initiator.

Organic electroluminescence device and method of producing organic device

An organic compound having excellent heat resistance, an excellent amorphous nature, an excellent ability to transport charges, highly excited singlet and triplet states, and excellent solubility in an organic solvent is an organic compound represented by Formula (I):  

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Kanagawa, Japan

Kazuki Okabe