Sumitomo Chemical Company, Limited

Masamitsu Ishitobi

Takanobu Noguchi

Masayoshi Minai

Shuji Doi

Chizu Sekine

Koichi Fujisawa

Toshihiro Ohnishi

Kazunori Iwakura

Takashi Sanada

Masato Ueda

Ken Yoshimura

Makoto Kitano

Akira Hasegawa

Toshiya Kuroda

Toshihiko Tanaka

Gas-barrier multilayer film

There are disclosed novel compounds, liquid crystal compositions, polymers, optically anisotropic producgs, and optical or liquid crystal elements that have large refractive index anisotropy, mix easily with other liquid crystals, have advantageous stability against light, and exhibit absorption at practically short wavelength in the ultraviolet region. The compounds are represented by the formula (1) and have a phenylacetylene structure, wherein difference &#x394;E in energy of HOMO of parts (1-1), (1-2) and (1-3) calculated by the method of molecular orbitals is not less than 0.3 electronvolt, and the polarizability anisotropy &#x394;&#x3b1; of a molecule represented by the formula (1) calculated in the same way is not lower than 500 A.U.: P&#x2014;H&#x2003;&#x2003;(1-2)P&#x2014;H&#x2003;&#x2003;(1-3)(Ato A: H, F, alkyl or alkoxy group of C1 to C10 optionally substituted with F; P, P: structure fulfilling the conditions of HOMO energy and polarizability).

Dibenzothiophene oxide compound, and process for producing the same

A polymeric fluorescent substance exhibiting strong visible fluorescence in solid state. The substance has a polystyrene reduced number-average molecular weight of 1&#xd7;10to 1&#xd7;10, and contains repeating units represented by formula (1),&#x2014;Ar&#x2014;(CR&#x2550;CR)&#x2014;&#x2003;&#x2003;(1)in the formula, Arrepresents an arylene group having a specific substituent. By using the polymeric fluorescent substance, a high performance polymer LED can be prepared easily.

Polymeric fluorescent substance and polymer light emitting device

There are disclosed novel compounds, liquid crystal compositions, polymers, optically anisotropic products, and optical or liquid crystal elements that have large refractive index anisotropy, mix easily with other liquid crystals, have advantageous stability against light, and exhibit absorption at practically short wavelength in the ultraviolet region. The compounds are represented by the formula (1) and have a phenylacetylene structure, wherein difference &#x394;E in energy of HOMO of parts (1-1), (1-2) and (1-3) calculated by the method of molecular orbitals is not less than 0.3 electronvolt, and the polarizability anisotropy &#x394;&#x3b1; of a molecule represented by the formula (1) calculated in the same way is not lower than 500 A.U.:(Ato A: H, F, alkyl or alkoxy group of C1 to C10 optionally substituted with F; P, P: structure fulfilling the conditions of HOMO energy and polarizability).

COMPOUND HAVING PHENYLACETYLENE STRUCTURE, LIQUID CRYSTAL COMPOSITION, POLYMER, OPTICALLY ANISOTROPIC PRODUCT, OPTICAL OR LIQUID CRYSTAL ELEMENT, DIBENZOTHIOPHENE COMPOUND, INTERMEDIATE, AND PROCESS FOR PRODUCING THE SAME

Provided is a high heat-resistant polymeric fluorescent substance having a divalent condensed polycyclic aromatic group of specific size having a bonding part at specific position shows fluorescence at a long wave length from orange to red, which is useful for fabricating an organic EL device having excellent properties by a coating method.

Polymeric fluorescent substance and organic electroluminescence device

Disclosed are an organic electroluminescence device having at least a light emitting layer between the electrodes consisting of one pair of an anode and a cathode, at least one of which electrodes is transparent or semi-transparent, wherein said light emitting layer comprises a polymeric fluorescent substance which emits a fluorescence in a solid state, is soluble in solvents and comprises at least one kind of repeating unit represented by the following formula (1) and at last one kind of repeating unit represented by the following formula (2) with the number of the formula (1) repeating units being 2-50% of the total number of all the repeating units:

An organic electroluminescence device having at least a light emitting layer between the electrodes consisting of one pair of an anode and a cathode, at least one of which electrodes is transparent or semi-transparent, wherein said light emitting layer comprises a polymeric fluorescent substance which emits a fluorescence in a solid state, is soluble in solvents and comprises at least one kind of repeating unit represented by the following formula (1) and at least one kind of repeating unit represented by the following formula (2) with the number of the formula (1) repeating units being 2-50% of the total number of all the repeating units:

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Tsukuba, Japan

Masamitsu Ishitobi