Abstract: A copolymer having a polystyrene reduced number average molecular weight of 103-108, and comprising repeating units represented by formulas (1), (2), and (3), 1

Abstract: An organic electroluminescent device of the type comprises an organic layer 5, 5a or 5b having a luminescent region and provided between an anode 2 and a cathode 3. The organic layer contains a distyryl compound represented by the following general formula (1). General Formula (1): wherein R1, R2, R3 and R4 are, respectively, groups which may be the same or different and independently represent an aryl group of the following general formula (2). General Formula (2): in which R9, R10, R11, R12 and R13 may be the same or different and, respectively, represent a hydrogen atom provided that at least one of them is a saturated or unsaturated alkoxyl group or an alkyl group, and R5, R6, R7 and R8 may be the same or different and, respectively, represent a hydrogen atom provided that at least one of them represents a cyano group, a nitro group or a halogen atom.

Abstract: A light-emitting element comprising a polymer represented by the formula (1) or formula (2):

Abstract: A coating liquid for forming an organic layer of an organic EL element by a printing method, comprising at least one organic solvent showing a vapor pressure of 500 Pa or less at a temperature for forming the organic layer, an organic EL element formed by using the coating liquid and a method of manufacturing the same.

Abstract: Fluorescent yellow pigment compositions comprising Pigment Violet 19 or Pigment Yellow 192 and a polyamide, a process for the making thereof, and a process for making an article comprising said fluorescent yellow pigment composition.

Abstract: The present invention is generally directed to electroluminescent Pt(II) complexes which have emission maxima across the visible spectrum, and devices that are made with the Pt(II) complexes.

Abstract: Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.

Abstract: This invention relates to compositions and electroluminescent (EL) devices that have enhanced performance as a result of a mixture of isomeric aromatic amine (IAA) compounds. The mixture can be vacuum evaporated to form amorphous thin films.

Abstract: A composition containing a high-molecular compound having as a photo-crosslinkable group any of a cinnamoyl group, a cinnamylidene group, a chalcone residual group, an isocoumarin residual group, a 2,5-dimethoxystilbene residual group, a thymine residual group, a styrylpyridinium residual group, an &agr;-phenylmaleimide residual group, an anthracene residual group and a 2-pyrone residual group, or an aromatic bisazide, is cross-linked by light irradiation via a mask to cure the composition in a prescribed pattern to form photoemission layers.

Abstract: A blue electroluminescent polymer comprising diphenylanthracene units in a main chain of polymer and an organic electroluminescence device using the blue electroluminescent polymer, to provide improved luminescent properties.

Abstract: A pressure sensor comprising a stable polymer having a backbone containing nitrogen and one or more of sulfur or phosphorous, and including a phosphorescent dye agent.

Abstract: An organic polymeric phosphorescent compound that is stable and emits very highly efficient phosphorescence, used as a material of an organic light-emitting device is provided. Also, an organic light-emitting device employing the organic polymeric phosphorescent compound's provided. The phosphorescent compound according to the present invention is a neutral organic polymeric phosphorescent compound emitting phosphorescence and used in an organic light-emitting device, characterized in that a phosphorescent unit being a repeat unit for emitting phosphorescence and a carrier transporting unit being a repeat unit for transporting a carrier are included.

Abstract: A europium-ammonium tetra chelate compound, composition, and method for making the compound according to the formula NH4+Eu3+[X]4.H2O, where X is a bidentate ligand is provided. The bidentate ligand may be diketone, and includes thenoyltrifluoroactonate, benzoyltrifluoroacetonate, and napthyltrifluoroacetonate ligands. The compound is invisible under ordinary light conditions, exhibits fluorescence upon exposure to UV light, and is soluble in alcohol and alcohol/water based solutions. The compound may be used as a dye in ink formulations, among other applications.

Abstract: An electroluminescent device containing an anode, an organic electroluminescent element, and a cathode wherein the electroluminescent element contains, for example, a fluorescent hydrocarbon component of Formula (I) wherein R1 and R2 are substituents, which are selected from the group consisting of hydrogen, an alkyl, an alicyclic alkyl, an alkoxy, a halogen, and a cyano; Ar1 and Ar2 are each independently an aromatic component or an aryl group comprised of a from about 4 to about 15 conjugate-bonded or fused benzene rings.

Abstract: A compound containing at least one repeating unit represented by the following formula (1) and at least one repeating unit represented by the following formula (2), a light emitting device material comprising the compound, and a light emitting device containing the light emitting device material: wherein R1 and R2 represent each a substituent; Ar1 and Ar2 represent each an arylene linking group or a heteroarylene linking group; R3 and R4 represent each a hydrogen atom or a substituent; R5 and R6 represent each a substituent; and m and n are each an integer of from 0 to 3.

Abstract: A polymer represented by the following formula (1):

Abstract: In an organic electroluminescent device constructed by providing at least an emitting layer and a carrier transport layer using an organic material between a hole injection electrode and an electron injection electrode, at least one of the emitting layer and the carrier transport layer contains a chelate compound of a chromone derivative with zinc or aluminum, a chelate compound of a 3-hydroxyflavone derivative with a metal, a chelate compound composed of an 8-quinolinol derivative dimer and another ligant which are coordinated to a metal, or a chelate compound composed of two 8-quinolinol derivatives coordinated to a metal and one halogen bonded thereto.

Abstract: A polymeric fluorescent substance exhibiting visible fluorescence in the solid state, having polystyrene reduced number average molecular weight of 1×103 to 1×108, and comprising one or more repeating units of following formula (1), 1

Abstract: Disclosed is a composition of matter comprising a tributyl phosphate complex of a group 3, lanthanide, actinide, or group 13 salt in an organic carrier and a method of making the complex. These materials are suitable for use in solid or liquid organic scintillators, as in x-ray absorption standards, x-ray fluorescence standards, and neutron detector calibration standards.

Abstract: Provided is a polymeric fluorescent substance comprising a copolymer which has a substituent containing a specific aromatic amine structure below in the side chain, 1

Abstract: Disclosed are a luminescent element material comprising a polymer having a partial structure represented by formula (I) 1

Abstract: The present invention describes novel polymers, their use as organic semiconductors and/or electroluminescent materials, and electro-luminescent devices containing polymers of this type.

Abstract: The invention discloses a composition and method of absorbing and/or detecting the presence of ignitable liquids. The composition includes a hydrophobic polymer, a hydrophobic long-chain carboxylic acid and, optionally, a hydrophobic solvent indicator dye and a hydrophobic white metallic oxide. The composition may be applied to an area suspected of containing an ignitable liquid and allowed to remain on the area for a time period sufficient to react with the ignitable liquid. If an ignitable liquid is present, the composition will form an aggregate by agglomeration with the ignitable liquid.

Abstract: A liquefied color phosphorescent material consisting of a mixture which comprises a stock solution; a colorant; a color-emitting phosphorescent fine pigment particle having an average particle diameter of 7 &mgr;m or less; and an additive for stably dispersing pigments containing a cellulose-based synthetic resin, silica-based powder, cyclohexanone, isophorone and mineral spirit. The pigment particles of colorant and the color-emitting phosphorescent fine pigment particle are enabled to be always maintained in a substantially uniform dispersion state in the stock solution, thereby making it possible to attain a desired emitting color and to coat the phosphorescent material without necessitating the under-coating using a color paint.

Abstract: Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.

Abstract: Provided are spirobifluorene compounds which can provide excellent processibility with improved solubility in organic solvents, an electroluminescence (EL) polymer obtained therefrom and an EL element having the same.

Abstract: Organic-inorganic HLED materials based on silsesquioxane architectures are disclosed. These silsesquioxane compounds incorporate at least one, and preferably multiple, functional moiety substituents selected from hole transport, electron transport, and emissive material moieties and combinations thereof. The hybrid materials have OLED properties, e.g. luminescence efficiency, brilliance, turn-on voltage, longevity, etc. HLED devices fabricated with the polyhedral silsesquioxane HLED materials are disclosed. The organic-inorganic HLED devices can include multiple layers of organic-inorganic luminescent material having different functional moiety substituents to balance charge transport and emissive properties. HLED devices can be fabricated with a single layer of the organic-inorganic hybrid luminescent material that contains hole transport, electron transport, and emissive material substituent moieties on a polyhedral silsesquioxane structure.

Abstract: An aqueous composition contains a polymer dispersed in water with polyvinyl alcohol as a protective colloid (abbreviated to PVA-dispersed polymer) and a fluorescent or phosphorescent dye.

Abstract: A composition comprising (a) an effective amount of a guest chromophore embedded in a matrix of a host chromophore, or (b) a host chromophore and an effective amount of a guest chromophore both embedded in a polymer matrix, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, and wherein the host chromophore is selected from the group consisting of benzo [4,5]imidazo [2,1 -a]isoindol-11-ones.

Abstract: Provided are a fluorescence conversion medium which comprises at least a fluorescent coloring matter and a binder resin and which can absorb light from a light emitter and can emit visible fluorescence, wherein fine particles containing the fluorescent coloring matter are dispersed in the binder resin; and a display device that comprises a light emitter and the fluorescence conversion medium. The fluorescence conversion medium (including fluorescence conversion films) has the advantages of stable fluorescence conversion capability, good heat resistance and good light resistance and favorable to high-resolution multi-color image display; and the display device comprises the fluorescence conversion medium.

Abstract: A composition for a fluorescent marking paste or paint that is non-toxic, water soluble, clear drying and safe for nonporous surfaces is disclosed. The invention is composed of a generic white school paste or any other water soluble, non-toxic, clear drying paste or cement to which non-toxic fluorescent or phosphorescent colorant particles and water are added. The consistency of the resultant mixture is either a paste for making an impression or a paint for applying to a non-porous object using a brush, and the paste or paint, when dry, is clearly visible under UV light. Unique identifying marks such as identifying stamps, actual fingerprints, or numbers may be placed on any nonporous object that can be safely cleaned with a damp cloth. This invention provides a safe marking system for allowing e-commerce sellers to prevent buyer fraud or for allowing owners to identify possessions for inventory and insurance purposes.

Abstract: Triptycene derivatives, and their use for opto-electronic applications, in particular as electroluminescent materials Triptycene devices of the formula (I) where the symbols in the formula have the following meanings: K1, K2 and K3 are identical or different and are mono- or polycyclic systems, which may, if desired, contain heteroatoms, preferably N, S and/or O, and; X and Y are identical or different and are CR1, N, P, As or SiR2; R1 are identical or different and are H, halogen, pseudohalogen or a hydrocarbon radical having 1 to 30 carbon atoms, which may also, if desired, contain heteroatoms, preferably —O—, —N— and/or —S—; R2 are identical or different and are a hydrocarbon radical having 1 to 30 carbon atoms, which may also, if desired, contain heteroatoms, preferably —O—, —N— and/or —S—, are suitable for use in electroluminescent devices.

Abstract: A light-emitting compound and a display device adopting the light-emitting compounds as a color-developing substance. When the display device adopts an organic layer formed of the light-emitting compound, such as a light-emitting layer or an electron transport layer, as a blue light-emitting material, it can display blue and has good luminous efficiency and driving voltage characteristics.

Abstract: An Organic Light Emitting Diode (OLED) includes as active material a conjugated poly(N-alkyl-2,7-carbazole) derivative described by the formula: 1

Abstract: A white electroluminescent polymer having a 3,3′-bicarbazyl group incorporated into a polymeric main chain of polyarylene, represented by the Formula 1: 1

Abstract: High solubility of pristine single and multi-walled carbon nanotubes using electron donors as solubilizers has been observed. The resulting carbon nanotube solution can be readily diluted with other organic solvents, such as acetone, toluene and methanol. SEM after solvent evaporation clearly shows that nanotubes are still present after being subjected to this procedure. Electronic absorption of these solutions is observed in both the UV and visible region. Strong light emission (=0.30) was observed at 561 nm for dilute solutions of aniline-dissolved carbon nanotubes diluted with acetone.

Abstract: A molding compound for use in encapsulating electronic packages which include an optoelectronic component, such as an LED, is provided. The molding compound of the present invention includes a partially cured epoxy composition having a phosphor material substantially uniformly distributed throughout the epoxy composition. The phosphor material may be suspended within the epoxy composition by pre-reacting a portion of the epoxy composition prior to B-staging of the molding compound. As such, the phosphor material is suspended within the epoxy composition, thereby preventing settling of the phosphor material during B-staging, as well as during curing of the molding compound in the encapsulation process.

Abstract: A light-emitting polymer and its preparation method, the polymer being excellent in electron injection and transport ability as well as hole injection and transport ability in an EL device, the EL device manufactured from the polymer being also emittable in the blue emission region, in which the EL device from an inorganic material is not mostly emittable. The light-emitting polymer of the invention is an alternated copolymer having repeated units (arylenevinylene units) excellent in hole injection and transport ability and repeated units (fluorinated tetraphenyl units) excellent in electron injection and transport ability with alternated order, as shown in formula (II). An EL device manufactured from the light-emitting polymer, a fluorinated tetraphenyl derivative of formula (I), which is used as a monomer to prepare the light-emitting polymer, and their preparation methods.

Abstract: A polarized organic photonics device, including an LED or photovoltaic device, is comprised of a first conductive layer or electrode coated with a friction transferred alignment material, a photoactive material, and a second electrically conductive layer or electrode. The alignment material provides for the orientation of the subsequently deposited photoactive material such that the photoactive material interacts with or emits light preferentially along a selected polarization axis. Additional layers and sublayers optimize and tune the optical and electronic responses of the device.

Abstract: An electroluminescent device containing an anode, an organic electroluminescent element, and a cathode wherein the electroluminescent element contains, for example, a fluorescent hydrocarbon component of Formula (I) wherein R1 and R2 are substituents, which are selected from the group consisting of hydrogen, an alkyl, an alicyclic alkyl, an alkoxy, a halogen, and a cyano; Ar1 and Ar2 are each independently an aromatic component or an aryl group comprised of a from about 4 to about 15 conjugate-bonded or fused benzene rings.

Abstract: An organic luminescent layer for use in an electroluminescent device with improved operating life includes an organic host material capable of sustaining both hole and electron injection and recombination. The layer also includes at least two dopants: a first dopant capable of accepting energy of electron-hole combinations in the host material; and a second dopant capable of trapping the holes from the host material. The first dopant being selected so that the bandgap energy of the first dopant is less than the bandgap energy of the host material and the second dopant being selected to have a hole trapping energy level above the valance band of the host material.

Abstract: Simultaneous measurement of neutron flux and temperature is provided by a single sensor which includes a phosphor mixture having two principal constituents. The first constituent is a neutron sensitive Li6F and the second is a rare-earth activated Y2O3 thermophosphor. The mixture is coated on the end of a fiber optic, while the opposite end of the fiber optic is coupled to a light detector. The detected light scintillations are quantified for neutron flux determination, and the decay is measured for temperature determination.

Abstract: A fluorescent substance of the following general formula: LnxA1−XPO4 wherein Ln represents at least one element selected from the group consisting of Nd, Yb and Er; A represents at least one element selected from the group consisting of Y, La, Gd, Bi, Ce, Lu, In and Tb; and X represents a value within the range of 0.01 to 0.99.

Abstract: Provided are a fluorescence conversion medium which comprises at least a fluorescent coloring matter and a binder resin and which can absorb light from a light emitter and can emit visible fluorescence, wherein fine particles containing the fluorescent coloring matter are dispersed in the binder resin; and a display device that comprises a light emitter and the fluorescence conversion medium. The fluorescence conversion medium (including fluorescence conversion films) has the advantages of stable fluorescence conversion capability, good heat resistance and good light resistance and favorable to high-resolution multi-color image display; and the display device comprises the fluorescence conversion medium.

Abstract: A fluorescent conversion filter converts the light in the region between near-ultraviolet and blue to green light and emits the green light with a high color purity, and to provide an organic light emitting element including such a fluorescent conversion filter. The fluorescent conversion filter contains, in a matrix resin, a fluorescent converter material, selected from a fluorescent dye, a fluorescent pigment and a mixture of a fluorescent dye and a fluorescent pigment, that absorbs light in the wavelength region between near-ultraviolet and blue and emits green light, and a light absorbing dye. The fluorescent converter material, that has an absorption band in the wavelength region between 450 and 500 nm, is contained in the fluorescent conversion filter at a mixing ratio, at that the light absorbance of the fluorescent conversion filter is one or more in the wavelength region between 450 and 500 nm.

Abstract: The present invention relates to a fluorescence-reddening membrane which comprises a light-transmittable medium and, dispersed therein, (a) a rhodamine base fluorescence pigment and (b) a fluorescence pigment which has absorptions in the blue region and induces energy transfer to and reabsorptions from the rhodamine base fluorescence pigment. According to the present invention, it is made possible to provide the fluorescence-reddening membrane capable of converting the color of light emitted by a blue-emitting organic electroluminescence device to a red light at a high conversion efficiency and also to provide an inexpensive red-emitting device capable of reducing the size and thickness of itself.

Abstract: An electroluminescent cell which exhibits a high luminous efficiency and excellent durability is provided. The electroluminescent material comprises a unit (AB) which is formed by alternate copolymerization of hole transfer monomers and electron transfer monomers, and a unit (A) which is formed by the polymerization of hole transfer monomers, wherein the molar ratio of the total of the structural units originating from the hole transfer monomers and the structural units originating from the electron transfer monomers in the unit (AB) and the structural units originating from the hole transfer monomers in the unit (A) is from 50:50 to 5:95. The electroluminescent cell has an anode layer 2, an electroluminescent material layer 3 made from the electroluminescent material, an electron transfer luminous layer 4, and a cathode layer 5.

Abstract: Diketopyrrolopyrrole (DPP) based polymers and copolymers comprising the following units wherein x is chosen in the range of from 0.005 to 1, and y from 0.995 to 0, and wherein x+y=1, and wherein Ar1 and Ar2 independently from each other stand for blends of such polymers and copolymers with other polymers, their use for the preparation of electroluminescent (“EL”) devices and EL devices comprising such polymers or copolymers.

Abstract: An organic light emitting display is provided which comprises as an emitting layer a fluorescent dye having at least one amine moiety substituted with two aryl groups. Also provided are new fluorescent compounds having N-aryl substituents which exhibit reduced pH sensitivity and enhanced stability to protonation.

Abstract: A colorized fire retardant composition comprising a fire retardant and a colorant, wherein the colorant is an aqueous dispersion of a pigment formed by polymerizing at least one monomer in the presence of at least one dye. The composition is particularly useful in combating and controlling fires by discharging the composition towards the fuel, or potential fuel, of a fire.