Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Kansai Technology Licensing Organization Co., Ltd.

Satoshi Kobayashi

Satoshi Mikami

Shuji Doi

Takanobu Noguchi

Chizu Sekine

Hidenori Hanaoka

Toshiaki Sasada

Nobuhiko Akino

Makoto Kitano

Makoto Anryu

Sheena Zuberi

Taichi Senda

Eiji Yoshikawa

Takayuki Iijima

Hiroyuki Hayasaka

Mika Shirasaki

Yoshiaki Tsubata

Tomoya Nakatani

Shigehiro Yamaguchi

Takahiro Ueoka

Akiko Nakazono

Masanobu Tanaka

Kohei Tamao

A method of producing a film having excellent external quantum efficiency when used in a light emitting layer of a light emitting device is provided. A method of film production includes preparing an ink containing a specific metal complex, storing the ink for 3 days or more under light shielding, and forming a film by using the stored ink. The total content of metal complexes having a molecular weight larger by 16, 32 or 48 than that of the specific metal complex according to an area percentage value determined by liquid chromatography is 0.6 or less when the content of the specific metal complex is taken as 100.

Film production method

A compound represented by the formula (1) is provided: wherein Arepresents an oxygen atom, a sulfur atom, &#x2014;NR&#x2014; or &#x2014;PR&#x2014;; at least one Ais &#x2014;NR&#x2014; or &#x2014;PR&#x2014;; Rrepresents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylsulfenyl group, a cycloalkylsulfenyl group, an arylsulfenyl group or a disubstituted amino group; Rand Rrepresent an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylsulfenyl group, a cycloalkylsulfenyl group, an arylsulfenyl group, a monovalent heterocyclic group, a halogen atom or a disubstituted amino group; Rrepresents a hydrogen atom, &#x2014;C(R), &#x2014;OR, &#x2014;N(R)or &#x2014;Si(R); m represents an integer of 0 to 3; and n represents an integer of 0 to 4.

Compound and method for producing same

Provided is a light-emitting device including an anode, a light-emitting layer, an electron-transporting layer and a cathode. The electron-transporting layer contains at least one electron-transporting material whose LUMO level is &#x2212;3.0 eV or more and at least one dopant material selected from the group consisting of a heterocyclic compound whose SOMO level is &#x2212;2.2 to &#x2212;1.5 eV and a derivative thereof. The LUMO level of the electron-transporting material is smaller than the SOMO level of the heterocyclic compound.

Light-emitting device and method for producing same

The present invention provides a novel compound having an excellent property to inject a hole into a device such as an organic EL device. More specifically, the present invention provides a compound comprising a residue obtained by removing at least one hydrogen atom from a structure represented by the following formula (1): wherein

Compound and organic electroluminescent element using the same

A metal complex which has a metal complex structure showing light emission from triplet excited state, and has a monovalent group derived from carbazole, and a light-emitting device using said metal complex.

Metal complex and organic electroluminescent device

A polymer compound comprising a residue of a compound represented by the following formula (0): wherein Arrepresents a substituent such as a hydrogen atom, an alkyl group, an alkoxy group, an aryl group and the like, or a group represented by the following formula (A), at least two Ars are groups represented by the following formula (A), Rrepresents a substituent such as an alkyl group, an alkoxy group, an aryl group and the like, l and m represent an integer of 0 to 3, wherein Arepresents &#x2014;N&#x2550; or &#x2014;C(R)&#x2550;. Rrepresents a substituent such as a hydrogen atom, an alkyl group, an alkoxy group, an aryl group and the like.

Phenoxazine polymer compound and light emitting device using the same

An aromatic compound of the following formula (1), (2), (5) or (6), 

Aromatic compound

An aromatic compound of the following formula (1), (2), (5) or (6), wherein, Arand Arrepresent a tetra-valent aromatic hydrocarbon group or a tetra-valent heterocyclic group, and Ar, Ar, Ar, Arand Arrepresent a tri-valent aromatic hydrocarbon group or a tri-valent heterocyclic group, Arepresents &#x2014;Z&#x2014;, &#x2014;Z-Z&#x2014; or &#x2014;Z&#x2550;Z&#x2014;, wherein Z, Zand Zrepresent O, S or the like and Zand Zrepresent N, B, P or the like, X, X, X, X, X, X, X, and Xrepresent a halogen atom or the like.

A polymer light emitting material which contains a polymer compound comprising a repeating unit of the following formula (1) or (2) and having a polystyrene-reduced number-average molecular weight of 10to 10, and which exhibits light emission from the triplet excited state. [wherein Arand Areach independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. Xand Xeach independently represent O, S, C(&#x2550;O), S(&#x2550;O), SO, C(R)(R), Si(R)(R), N(R), B(R), P(R) or P(&#x2550;O)(R). Xand Arbond to adjacent carbon atoms in the aromatic ring of Ar; and Xand Arbond to adjacent carbon atoms in the aromatic ring of Ar]; [wherein Arand Areach independently represent a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group. Xand Xeach independently represent N, B, P, C(R) or Si(R). Xand Arbond to adjacent carbon atoms in the aromatic ring of Ar; and Xand Arbond to adjacent carbon atoms in the aromatic ring of Ar].

Polymer light-emitting material comprising a conjugated polymer and compound exhibiting light emission from the triplet excited state and polymer light-emitting device using the same

High-molecular compounds comprising repeating units represented by the general formula (1) or (2) and having number-average molecular weights of 10to 10in terms of polystyrene: (1) [wherein Arand Arare each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and Xand Xare each independently O, S, C(&#x2550;O), S(&#x2550;O), SO, C(R)(R), Si(R)(R), N(R), B(R), P(R), or P(&#x2550;O)(R), with the provisos that Xand Xmust not be the same and that Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar, and Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar] (2) [wherein Arand Arare each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and Xand Xare each independently N, B, P, C(R), or Si(R), with the provisos that Xand Xmust not be the same and that Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar, and Xand Arare bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar]. 

Polymer compound and polymer light-emitting device using the same

An aromatic compound of the following formula (1), (2), (5) or (6), wherein, Arand Arrepresent a tetra-valent aromatic hydrocarbon group or a tetra-valent heterocyclic group, and Ar, Ar, Ar, Arand Arrepresent a tri-valent aromatic hydrocarbon group or a tri-valent heterocyclic group, Arepresents &#x2014;Z&#x2014;, &#x2014;Z&#x2014;Z&#x2014; or &#x2014;Z&#x2550;Z&#x2014;, wherein Z, Zand Zrepresent O, S or the like and Zand Zrepresent N, B, P or the like, X, X, X, X, X, X, X, and Xrepresent a halogen atom or the like.

Provided is a polymer comprising a repeating unit represented by formula (1), wherein, Arepresents a divalent group in which the bond distance ratio (bond distance of C(&#x3b1;)-A/bond distance of C(&#x3b1;)-C(&#x3b2;)) is 1.10 or more; R, R, R, R, R, and R, each independently represent a hydrogen atom, alkyl group, alkyloxy group, aryloxy group, arylalkyloxy group, etc. The polymer is useful as a light-emitting material, a charge transporting material, etc.

Polymer and polymer light-emitting device using the same

A transition metal complex represented by the formula (1): wherein M is a Group 4 transition metal, A is a Group 16 element, B is a Group 14 element, n is an integer of 0 or 1, R, R, Rand Rmay be the same or different and each independently denotes a substituent selected from the group consisting of the groups (I) and (II):

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Tsukuba, Japan

Satoshi Kobayashi