Toyo Ink Manufacturing Company

Hazama Corporation

Toshio Enokida

Michiko Tamano

Satoshi Okutsu

Toshikazu Onikubo

Tadashi Ogawa

Reiko Tanaka

Hiromi Uchida

Terunobu Maeda

Shigemasa Takano

Toshiyuki Uemura

Atsunori Negishi

Yasumasa Suda

A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula &lsqb;1&rsqb;,

Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied

A light-emitting material of the following general formula &lsqb;1&rsqb; for an organic electroluminescence device,

Light-emitting material for organic electroluminescence device, and organic electroluminescence device for which the light-emitting material is adapted

A hole-injecting material for an organic EL device, having excellent hole-injecting capability and durability and having the formula &lsqb;I&rsqb;, &lsqb;II&rsqb; or &lsqb;III&rsqb; specified in claim,and an organic electroluminescence device obtained by forming either a light-emitting layer or a plurality of organic compound thin layers including the light-emitting layer between a pair of electrodes composed of a cathode and an anode, wherein at least one layer contains the above material.

Material for organoelectroluminescence device and use thereof

To provide a,growth inhibitor, a cement composition, and a cement structure which are capable of inhibiting effectively growth of,not only in the neutral pH range but also in the acidic pH range of 4 or below, of which active component metal ions are sufficiently prevented from being dissolved and released when contained in a cement structure, and of which effect can be maintained for a prolonged period of time. The inhibitor contains a first component selected from the group consisting of nickel phthalocyanine powders, powders of a nickel phthalocyanine derivative, and mixtures thereof, and a second component selected from the group consisting of tungsten powders, powders of a substantially water-insoluble tungsten compound, a water-soluble salt of tungstic acid turning to substantially water-insoluble when reacted with cement, and mixtures thereof.

Thiobacillus thiooxidansgrowth inhibitor, cement composition, and cement structure

Deterioration preventive for concrete or mortar and method for

A hole-injecting material for an organic EL device, having excellent hole-injecting capability and durability and having the formula [I], [II] or [III] specified in claim 1, and an organic electroluminescence device obtained by forming either a light-emitting layer or a plurality of organic compound thin layers including the light-emitting layer between a pair of electrodes composed of a cathode and an anode, wherein at least one layer contains the above material.

Material for organoelectro-luminescence device and use thereof

An organic EL device which is excellent in stability in the repetitive operation and has a high light emission brightness can be obtained from a gallium complex of the general formula (1), ##STR1## wherein each of Q.sup.1 and Q.sup.2 is independently a ligand of the general formula (2); and L is a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic ring group, --OR.sup.1 in which R.sup.1 is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic ring group, or --O--Ga--Q.sup.3 (Q.sup.4) in which Q.sup.3 and Q.sup.4 have the same meanings as those of Q.sup.1 and Q.sup.2, ##STR2## wherein A.sup.1 and A.sup.2 are substituted or unsubstituted six-membered aryl rings which are mutually fused to form a fused ring moiety.

Organoelectroluminescence device material and organoelectroluminescence

A hole-transporting material having excellent hole transportation capability and sufficient durability, used in an organic EL device and an electrophotographic photoreceptor, the hole-transporting material having the general formula specified in claim 1.

Hole-transporting material and use thereof

A material for an organic EL device, having excellent capability of injecting holes from a metal electrode and having durability, and an organic EL device which is imparted with excellent stability in the repeated use for light emission by using the above material, the material having the formula (1), (6) or (7) as specified in claim 1.

Material for organoelectroluminescence device and

A light-emitting material for developing an organic EL device, which has the formula �1! or �2! recited in claims, and an organic EL device having layers thereof, the organic EL device having a high light emission brightness and a long life of light emission.

Light-emitting material for organo-electroluminescence device and

A light-emitting material of the following general formula �1! for an organic electroluminescence device, ##STR1## wherein each of A.sup.1 to A.sup.4 is a substituted or unsubstituted aryl group having 6 to 16 carbon atoms, and each of R.sup.1 to R.sup.8 is independently a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group or a substituted or unsubstituted amino group, provided that adjacent substituents may form an aryl ring.

Light-emitting material for organic electroluminescence device, and

A hole-transport material having excellent hole-transport capability and durability, suitable for use in an organic EL device and as an organic photoconductive material, has the formula (1).

Hole-transport material

Hole-transporting materials of the following formula (1) have excellent hole-transporting capability and excellent durability,

A hole-transporting material having excellent hole transportation capability and excellent durability, and an organic EL device and an electrophotographic photoconductive drum for which the above hole-transporting material is adapted and which have excellent stability in the repetitive use.

Hole-transporting material and its use

This invention provides an optical semiconductor material comprising: (1) a noncrystalline titanium phthalocyanine compound which does not show substantial X-ray diffraction peak in X-ray diffraction chart, (2) a pseudo-noncrystalline titanium phthalocyanine compound which shows broad X-ray diffraction peaks at Bragg angles of 6.9.degree., 15.5.degree., 23.4.degree. and 25.5.degree. measured by using CuK.alpha. beam and (3) an assembly of said noncrystalline titanium phthalocyanine compound and pseudo-noncrystalline titanium phthalocyanine compound. Further, this invention provides an electrophotographic plate comprising an electrically conductive substrate, and a charge-generating layer and charge-transferring layer on the electrically conductive substrate, characterized in that the charge-generating layer contains the above noncrystalline and/or pseudo-noncrystalline titanium phthalocyanine compound(s).

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Tokyo, Japan

Toshio Enokida