Abstract: The present invention relates to fluorescent diketopyrrolopyrrole analogues of the general formula (I), wherein A1 and A2 are C1–C18alkyl, C2–C18alkenyl, C2–C18alkynyl, C5–C8cycloalkyl, C5–C8cycloalkenyl, aryl or heteroaryl, A3 and A4 are independently of each other C1–C18alkyl, Ar3, —CR30R31—(CH2)m—Ar3, or Y—R32, wherein R30 and R31 independently of each other stand for hydrogen or C1–C4alkyl, or phenyl which can be substituted up to three times with C1–C3alkyl, Ar3 stands for aryl, in particular phenyl or 1- or 2-naphthyl, C5–C8cycloalkyl, in particular cyclohexyl, or heteroaryl, which can be substituted one to three times with C1–C8alkyl, C1–C8alkoxy, halogen or phenyl, which can be substituted with C1–C8alkyl or C1–C8alkoxy one to three times, and m stands for 0, 1, 2, 3 or 4, Y is C(O)— or SO2— and R32 is C1–C18alkyl, Ar3, or aralkyl and A3 can additionally be hydrogen, C1–C8alkyloxycarbonyl, such as tertbutoxycarbonyl, or aralkyloxycarbonyl, such as benzyloxycarbonyl, a process for their preparation and

Abstract: An electroluminescent device comprising electrodes consisting of a pair of an anode and a cathode, at least one of the electrodes being either transparent or translucent, and an organic layer interposed between said electrodes, wherein said organic layer comprises a copolymer comprising in the main chain thereof 9-oxo-9-phosphafluorene-2,7-diyl units and arylene units, represented by formula (1) below, and the thickness of said organic layer is from 1 nm to 10 ?m: wherein R represents hydrogen, alkyl, cycloalkyl, aralkyl, aryl, alkyloxy, cycloalkyloxy, aralkyloxy, or aryloxy; Ar represents arylene; and n is an integer of 3 to 30,000.

Abstract: A process comprising a) providing a polymer blend comprising a luminescent polymer and a second polymer, where at least one of the polymers is crosslinkable, and b) crosslinking the crosslinkable polymer.

Abstract: Crosslinked polymer blends that include a luminescent polymer. Also featured are devices incorporating these blends.

Abstract: A polymeric fluorescent substance exhibiting strong visible fluorescence in solid state. The substance has a polystyrene reduced number-average molecular weight of 1×103 to 1×108, and contains repeating units represented by formula (1), —Ar1—(CR1?CR2)m—??(1) in the formula, Ar1 represents an arylene group having a specific substituent. By using the polymeric fluorescent substance, a high performance polymer LED can be prepared easily.

Abstract: Provided is a polymeric fluorescent substance containing specific proportion of a repeating unit comprising 2 to 5 arylene groups or heterocyclic compound groups. The polymeric fluorescent substance has strong fluorescence, and can be suitably used as a polymer for high performance polymer LED and a dye for laser.

Abstract: Novel red emitting phosphors for use in fluorescent lamps resulting in superior color rendering index values compared to conventional red phosphors. Also disclosed is a fluorescent lamp including a phosphor layer comprising blends of one or more of a blue phosphor, a blue-green phosphor, a green phosphor and a red a phosphor selected from the group consisting of SrY2O4:Eu3+, (Y,Gd)Al3B4O12:Eu3+, and [(Y1-x-y-mLay)Gdx]BO3:Eum wherein y<0.50 and m=0.001-0.3. The phosphor layer can optionally include an additional deep red phosphor and a yellow emitting phosphor. The resulting lamp will exhibit a white light having a color rendering index of 90 or higher with a correlated color temperature of from 2500 to 10000 Kelvin. The use of the disclosed red phosphors in phosphor blends of lamps results in high CRI light sources with increased stability and acceptable lumen maintenance over the course of the lamp life.

Abstract: A paper coating slip contains a polymer dispersed with polyvinyl alcohol as protective colloid in water (abbreviated to PVA-dispersed polymer).

Abstract: An organic light-emitting device (OLED) in which an iptycene derivative is used as the emissive layer and/or one or more of the charge transport layers, or as a host material for one or more of these layers.

Abstract: In general terms, the present invention includes a light emitting polymeric material the light emitting polymeric material capable of producing electroluminescence upon being provided with a flow of electrons, the light emitting polymeric material comprising a plurality of polymeric chains comprising polymeric chains each having substituent moieties of sufficient number and size and extending from the polymeric chain and about a substantial portion of the circumference about the polymer chain so as to maintain the polymeric chains in a sufficiently deaggregated state (referred to herein as a “strapped” polymer), so as to substantially prevent the redshifting of the electroluminescence and the lowering of light emission efficiency of the electroluminescence.

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: A white electroluminescent polymer having a 3,3?-bicarbazyl group incorporated into a polymeric main chain of polyarylene, represented by the Formula 1: in which Ar is an aromatic group having 6 to 26 carbon atoms, or a heteroaromatic group having 4 to 14 carbon, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; R is a hydrogen atom, linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, or an aromatic group having 6 to 14 carbon atoms, in which the aromatic group may be substituted with alkyl group, alkoxy group or amine group, each having 1 to 12 carbon atoms; and m and n may be the same or different, and satisfy the following relationships 0.1?m/(m+n)?0.9 and 0.1?n/(m+n)?0.9. The present inventive white electroluminescent polymer is capable of overcoming the limits of conventional polymer blending systems.

Abstract: A luminescent polymer, suitable for use in an active layer of an organic light-emitting device, organic solid state lasers, a photovoltaic cell or an electrochromic display and exhibiting good stability and microstructure control, which has the structure wherein Ar1 and Ar2 are aromatic or heteroaromatic rings, such as phenyl, biphenyl, fluorene, thiophene, pyridyl, or their substituted aromatic or heteroaromatic rings with or without deuterium, and R1 and R2 are independently each selected from the group consisting of hydrogen, deuterium, substituted or unsubstituted alkyl, alkoxyl, aryl and heteroaryl, or halogen, wherein D represents deuterium and n is an integer greater than 3. Electronic devices and methods of making them which employ these luminescent polymers are also described.

Abstract: An electroluminescent element in which at least one layer containing at least one of novel hydrocarbon compounds with an anthracene ring and a fluorene ring directly bound is held between a pair of electrodes. The compounds can advantageously be used in a luminescent element and provide an organic electroluminescent element having an excellent luminescent efficiency and a long luminescent life.

Abstract: A copolymer has a polystyrene reduced number average molecular weight of 103-108, and includes repeating units represented by formulas (1), (2), and (3), ?—Ar1—??(3) The copolymer has an excellent solubility in an organic solvent, and a high glass transition temperature in good valance. Further, a polymer LED has high performance, such as low-voltage driving and high luminance.

Abstract: Disclosed are compounds according to formula (I), wherein R? and R? are selected from the group consisting of R?=SiR1R2R3 and R?=H; R?=SiR1R2R3 and R?=SiR4R5R6; and R?=Ar1SiR1R2R3 and R?=Ar2SiR4R5R6; R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, cycloalkenyl, cycloalkynyl, arylalkyl, arylalkenyl, and arylalkynyl; Ar1 and Ar2 are independently selected from the group consisting of arylene, arylenealkylene, arylenealkynylene, heteroarylene, heteroarylenealkylene, heteroarylenealkenylene and heteroarylenealkylene; and n is at least 20. Such compounds may be used as an emissive layer in a polymer light-emitting diode (PLED), which itself may be used in electroluminescent devices.

Abstract: A composition, which can be used in an ink jet printing method, can use either a non-polar or a weakly polar material as a functional material, prevents clogging at dispensing time, achieves stable dispensing, and prevents precipitation of content matter during dispensing and phase separation during film formation, a uniform, homogenous functional film formed using this composition and a manufacturing method therefor, as well as an organic EL device or other such display device and a manufacturing method therefor. A composition of the present invention consists of a functional material, and a solvent comprising at least one benzene derivative, which has one or more substituents, and these substituents have 3 or more carbon atoms in total. A functional film of the present invention is formed using the above-mentioned composition. A display device of the present invention comprises luminescent material layers formed using the above-mentioned composition between two electrodes.

Abstract: The present invention is generally directed to a polymeric metal complex comprising a polymeric material having a plurality of a first-type functional groups, wherein at least a portion of the functional groups are coordinated to at least one metal containing complex, polymeric-metal complex salts comprising at least one polymeric material having a plurality of first-type functional groups having a charge, and at least one metal complex having an opposite charge. It further relates to devices that are made with the polymeric metal complex or the polymeric-metal complex salt.

Abstract: The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.

Abstract: An ultraviolet-absorbing film comprising a fluorescent brightening agent and having a transmission of the rays of 410 nm or less of 90% or less, wherein the fluorescent brightening agent is represented by the following formula (I): wherein R1 and R4 each represents a hydrogen atom, an alkyl group or an alkoxyl group; R2 and R3 each represents an alkyl group; and [A] represents a substituted aryl or substituted ethenyl group.

Abstract: Provided herein is an inorganic-organic hybrid conjugated polymer having opto-electronic function and a process to make the same. The disclosed polymer contains inorganic or organic bulky groups in the polymer backbone or as pedant groups and has a general formula: wherein: A is a bulk group, comprising at least one silsesquioxane, serving as a positional anchor for the polymer. S serving as a spacer includes alkyl, cycyloalkyl group of from 1 to 30 carbon atoms, or aryl or substituted aryl of from 6 to 50 carbon atoms, or herteroaryl or substituted heteroaryl of from 4 to 50 carbons. CP represents any conjugated polymer segment at least one portion thereof comprising an opto-electronic function, for example, polyacetylenes, polyphenylenes, polyphenylenevinylenes, polythiophenes, polypyrroles, polyanilines, polyfluorences, and any conjugated co-polymer segment. x, y and z are positive integers, where x and z is equal or greater than 1.

Abstract: The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.

Abstract: A latent or “invisible ink” security marking formulation is provided using a phosphor with distinct emissions characteristics including visible emission due to excitation at a particular invisible wavelength. An insoluble inorganic phosphor with this or a similarly distinct emission characteristic is milled to a small particle size, preferably less than one micron particle diameter, and is combined with a carrier at very low pigment concentration, for example one percent by weight of the ink formulation. Preferably the pigment is cropped to resin particles in a binder. This ink formulation is diluted by a volatile solvent and applied using a conventional inkjet printer of the type used to mark codes on packages and labels. To test for security purposes the printing is irradiated and a response according to the predetermined characteristic is noted (or not noted) to detect security information.

Abstract: A pyrene based compound and its use in an organic light emitting device (OLED) according to the following formula: In the above formula, Z1 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and Z2 represents a hydrogen or deuterium atom. One of Y1 and Y2 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, a substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and the other of Y1 and Y2 represents a hydrogen or deuterium atom. X1 through X6 independently represent hydrogen atoms, deuterium atoms, alkyl groups or aryl groups, and at least one of X1 through X6 represents a bulky alkyl group or bulky aryl group.

Abstract: A light-emitting element comprising a polymer represented by the formula (1) or formula (2): -(EUG)k-(PMG)m-(NRG)n-??(1) wherein EUG represents a monomer unit comprising a partial skeleton effective as a light-emitting element material; PMG represents a monomer unit comprising a polymerizable group; NRG represents a copolymerization monomer unit; (EUG-PMG) represents a group wherein PMG is bonded as a single unit of EUG; and k, m, n, p and q each represents a mole percentage wherein k is from 1 to 99(%); m is from 1 to 99(%); n is from 0 to 98(%); k+m+n=100(%); p is from 1 to 99(%); q is from 0 to 99(%); and p+q=100(%).

Abstract: Disclosed is a red luminous ink composition comprising a europium complex represented by the formula: wherein R1 is a hydrogen atom or a substituent selected from the group consisting of an alkyl group having from 1 to 4 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms and a halogen atom, R is a group selected from the group consisting of a fluorine-comprising alkyl group having from 1 to 20 carbon atoms, a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 10 carbon atoms and a substituted or unsubstituted aryl group having from 6 to 12 carbon atoms. The red luminous ink composition exhibits satisfactory emission intensity under ultraviolet irradiation.

Abstract: An organic EL device employing polymer material includes a structure in which a luminous layer formed of a polymer indicated by is put between a lower electrode and an upper electrode. Where, in the above chemical formula, Ar1, Ar2 denote a allylene group respectively, R1, R2, R3, R4 denote a substituent respectively, and n denotes a copolymerization ratio. Accordingly, the flatness of the luminous layer can be improved and the solubility of the luminous layer constituent material can be enhanced.

Abstract: A composition for an organic EL element which can form a high precision pattern in a simple manner and in a short time and a method of manufacturing the organic EL element are disclosed. By using the composition, optimum film design and luminescence characteristic can be easily obtained, and an adjustment of a luminescence efficiency can also be easily performed. The composition for an organic EL element comprises a precursor of a conjugated organic polymer compound for forming at least one luminescent layer (106), (107), (108) having a certain color and at least one kind of fluorescent dye for changing the luminescence characteristic of the luminescent layer. The luminescent layer is made from a pattern formed by an ink-jet method. As for the precursor, a precursor of PPV, PPV derivative or the like is preferably used.

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

Abstract: A phosphorescent light emitting material, the material is a complex compound comprises a beta-diketonate ligand, a sulfoxide ligand and a triple charge rare earth group metal ion, the phosphorescent light emitting material has a following structure: wherein M is a triple charge rare earth group metal ion, R2 is hydrogen, R1 and R3 are selected from the group consisting of, hydrogen, C1 to C8 straight chain alkyl groups, C3 to C8 branch chain alkyl groups, heterocyclic groups and C6 to C14 aryl groups, and R4 and R5 are selected from the group consisting of substituted alkyl group, an unsubstituted alkyl group, an aryl group and a heterocyclic group.

Abstract: A light emitting device includes a light emitting element and a luminescent medium.

Abstract: The invention provides organic compounds of the general structures (1A), (1B) and (1C) 1

Abstract: The invention provides organic compounds of the general structure (1) 1

Abstract: An organic material capable of generating luminescence by charge of an electric current includes a compound having a general formula (1): wherein Ar1, Ar2 and Ar3 may be the same or different and, respectively, represent a substituted or unsubstituted aryl group or heterocyclic aryl group and wherein R1, R2, R3, and R4 may be the same or different and, respectively, represent a alkyl group, cycloalkyl group, a substituted or unsubstituted aryl group or heterocyclic aryl group.

Abstract: Disclosed is a film comprising PMMA and a fluorescent substance having a xanthene skeleton and a lactone ring and/or a fluorescent substance having a xanthene skeleton and a group —COOR, where R represents a hydrogen atom or a substituent, capable of forming an intramolecular lactone ring, said fluorescent substances being dispersed in the PMMA. The film is useful as an optical memory.

Abstract: Disclosed is an organic light emitting diode device containing a light emitting layer (LEL) comprising a host and a blue light emitting dopant wherein the dopant comprises a 2-(3-aminophenyl)-benzofuran or 2-(4-aminophenyl)-benzofuran compound. The dopant provides improved luminance and luminance yield.

Abstract: An organic molecular compound comprising a complex fluorene structure having either: 1

Abstract: Pigment-free mixtures, containing a) at least one optical brightener and b) at least one (co)polymer, with at least one N-vinylcarboxamide incorporated in the polymer and/or at least one nitrogen-containing heterocyclic ring and/or which may form a nitrogen-containing heterocyclic ring.

Abstract: The invention relates to the use of compounds of phenolic origin for the stabilization of the luminescence from organic for the stabilization of the luminescence from organic materials and a process for the stabilization itself.

Abstract: The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be used for measurement or determination with excitation at a predetermined excitation wavelength, a second fluorescent coloring material that emits fluorescence on excitation at the predetermined excitation wavelength, where the excitation spectrum of the first coloring material in the ink to obtain the fluorescence at the predetermined emission wavelength has a peak wavelength range next to the predetermined fluorescence wavelength, and the emission fluorescence spectrum of the second coloring material has an emission wavelength region substantially including at least the above peak wavelength range.

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: Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active species that can react with the luminescent compound to alter one or more of the characteristics of the luminescent compound. The luminescent compound can be colored or colorless. Also disclosed is a method for marking substrates comprising providing a mark comprising a luminescent compound and an energy active compound. Further disclosed is a jet ink composition suitable for printing on substrates authentication or security marks which can be rendered unreadable. The luminescence of the mark is quenched and the visible color is changed when irradiated with a light.

Abstract: A paper coating slip contains a polymer dispersed with polyvinyl alcohol as protective colloid in water (abbreviated to PVA-dispersed polymer).

Abstract: Compounds and compositions are provided that can be used as electron transport agents in organic electronic devices such as organic electroluminescent devices. The compounds are non-polymeric and have an aromatic core conjugated to end capping groups. The aromatic core contains a phenylene group arylene or naphthalene group arylene having a pendant heteroaryl group that includes a —C═N— unit.

Abstract: Compounds, compositions, organic electronic devices, and methods for preparing organic electronic devices are described. The compounds of the invention contain at least two carbon-carbon triple bonds and a heteroaromatic ring having at least one —C═N— unit. The compounds can be used as electron transport agents in organic electronic devices such as organic electroluminescent devices.

Abstract: A pyrromethene metal complex is used as a fluorescent dye to form a light emitting device. The light emitting device has a substance which brings about light emission between an anode and a cathode. By applying electrical energy, the device generates emission having an emission peak wavelength of 580 to 720 nm. The device contains at least one of: a diketopyrrolo[3,4-c]pyrrole derivative and an organic fluorescent material having a fluorescent peak wavelength of 580 to 720 nm; and a light emitting device composition containing a pyrromethene metal complex.

Abstract: Disclosed herein are a polymer for forming an organic electroluminescence device and a polymer composition for organic electroluminescence devices, by which a thin film can be formed with ease by the wet method, and an organic electroluminescence device that can achieve light emission high in luminous luminance and stable even during continuous driving can be provided, and the organic electroluminescence device.

Abstract: A light absorbing and emitting composition consisting of a transparent or translucent substrate and a plurality of light absorbing polymer granules which are well mixed together to a composition for making articles with desired shapes, whereby ten or hundreds of light absorbing polymer granules within the transparent or translucent substrate can emit brighter light for a longer period, thereby producing much variation in visual effect.

Abstract: The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of Formula (I), wherein A1 and A2 independently from each other stand for (II) wherein R1, R2 and R5 to R11 are as defined in claim 1, a process for their preparation and their use for the preparation of inks, colorants, pigmented plastics for coating, non-impact-printing material, color filters, cosmetics, or for the preparation of polymeric ink particles, toners, dye lasers and electroluminescent devices. The fluorescent diketopyrrolopyrroles (“DPPs”) of Formula (I) exhibit a high lightfastness, a high heat stability, especially in plastics. A luminescent device comprising a DPP compound of Formula (I) is high in the efficiency of electrical energy utilisation, high in luminance and high in colour purity.

Abstract: An analyte detection system utilizing a combination of fluorescent labels for labeling particles and an analyte specific fluorescent analyte detection dye. The particles contain a combination of fluorescent labels for coding the particles and an analyte specific fluorescent dye. The particles can be used to identify and quantify analytes in an analytical sample by reaction of the analytical sample with the particles. An analytical device can identify the particles according to the combination of fluorescent labels. The device can then correlate the identified particle with the analyte specific fluorescent analyte detection dye. Multiple subpopulations of particles can be used to identify and quantify multi-analytes in a single analytical sample. Near infrared (NIR) fluorescent labels useful in the detection system are also provided.