Sumitomo Chemical Company, Limited

Takahiro Ueoka

Shuji Doi

Yoshiaki Tsubata

Hideyuki Ikehira

Takanobu Noguchi

Makoto Kitano

Hidenobu Kakimoto

Yasuyuki Kurita

Chizu Sekine

Shigeru Sasaki

Satoshi Kobayashi

Akiko Nakazono

Jun Oguma

Hisaaki Miyamoto

Hiroyuki Saito

Sadamu Yoshida

Nobuchika Iwata

A method for producing a liquid composition formed of a phosphorescent material and an organic solvent includes the steps of: dissolving a phosphorescent material in an organic solvent to prepare a mixed liquid, and filtering the mixed liquid by a filtering device. The filtering device is a housing or holder, a fluororesin membrane filter, and a filter support member. A material of a portion of the housing and holder in contact with the mixed liquid is a metal or a mixture of metal and at least one of glass, fluororesins, polyethylene not containing a phosphorus antioxidant, and polyethylene not containing an oxidized phosphorus antioxidant. A material of a portion of the filter support member in contact with the mixed liquid is at least one of metals, glass, fluororesins, polyethylene not containing a phosphorus antioxidant, and polyethylene not containing an oxidized phosphorus antioxidant.

Method for producing liquid composition

A composition comprising an organic EL material, a solvent (A) represented by the formula (1), an aromatic hydrocarbon solvent (B) and an aromatic ether solvent (C): [wherein Rrepresents an alkyl group having a number of carbon atoms of 10 to 12].

Composition and light emitting device using the same

A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 10to 10wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and the substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

Polymeric light emitting substance and polymer light emitting device using the same

A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 10to 10wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and said substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

A polymeric fluorescent substance exhibiting fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 1&#xd7;10to 1&#xd7;10, and comprising one or more repeating units of formula (1) and one or more repeating units of formula (8),&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014;&#x2003;&#x2003;(1)&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014;&#x2003;&#x2003;(8)wherein Arrepresents a specific arylene or a divalent heterocyclic compound group, and Arrepresent an arylene or a divalent heterocyclic compound group other than Ar. By using the polymeric fluorescent substance, a high performance polymer LED can easily be obtained.

Polymeric fluorescent substance and polymer light-emitting device using the same

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 polymeric fluorescent substance showing fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 10to 10, and comprising one or more repeating units of formula (1) and one or more repeating units of formula (2) which is different from formula (1), exhibits strong fluorescence and/or excellent charge transporting property, and a high performance polymer LED which can be driven at low voltage and high efficiency is obtained.

Provided is a polymer compound having a polystyrene reduced number average molecular weight of 10-10, and comprising a repeating unit represented by the below formula (1-1) or (1-2),wherein Ring A, Ring B, Ring C, or Ring D each independently represent an aromatic ring, and X represents S or O. The compound is usable as a light-emitting material, a charge transporting material, etc.

Polymer compound and polymer light emitting device using the same

Provided is a bis(diphenylvinyl)arene compound having a reactive functional group on phenyl group, represented by below formula (1),wherein, Ar is an arylene group and has one or more substituents; R-Reach independently represent a hydrogen atom, a halogen atom, cyano group, nitro group, etc., and at least one of R-Ris a halogen atom, etc. The arene compound has sufficient solubility in an organic solvent and excellent reactivity.

Bis (diphenylvinyl) arene compound

Provided is a process for producing a bromo-aromatic condensed ring compound which comprises reacting an aromatic condensed ring compound in which the number of carbon atom constituting the aromatic condensed ring is 15 or more with a N-bromo carboxylic acid amide in the presence of a chlorinated hydrocarbon compound and sulfuric acid to brominate said aromatic condensed ring compound.

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Tsukuba, Japan

Takahiro Ueoka