Abstract: To provide a process of producing an organic electroluminescence element having a high current efficiency and a long drive life by a wet film formation process. The present invention relates to a process of producing an organic electroluminescence element composition, comprising a filtration step of filtering a solution containing an organic electroluminescence element material and a solvent, wherein the composition is obtained after a time-elapsing step wherein 8 hours or more elapses after the filtration step, and the composition is used for a wet film formation of an organic layer in an organic electroluminescence element.

Abstract: The present invention provides a color conversion film that can maintain sufficient conversion light intensity without increasing the thickness thereof, and a multicolor light-emitting organic EL device that uses such a film. The color conversion film of the invention includes a polymeric dye material that has a weight-average molecular weight of at least 1,000 but not more than 100,000 and that is composed of a first dye unit and a second dye unit. The first dye unit absorbs light incident on the color conversion film and transfers energy of the absorbed incident light to the second dye unit. The second dye unit receives the energy from the first dye unit and emits light.

Abstract: Novel combination of materials and device architectures for organic light emitting devices are provided. In some aspects, specific charge carriers and solid state considerations are features that may result in a device having an unexpectedly long lifetime. In some aspects, emitter purity is a feature that may result in devices having unexpectedly long lifetime. In some aspects, structural and optical considerations are features that may result in a device having an unexpectedly long lifetime. In some aspects, an emissive layer including an organic phosphorescent emissive dopant and an organic carbazole host material results in devices having an unexpectedly long lifetime.

Abstract: The invention relates to a composition comprising an organic emitter molecule, this molecule having a ?E(S1?T1) value between the lowermost excited singlet state (S1) and the triplet state beneath it (T1) of less than 2500 cm?1, and an optically inert atom or molecule for reducing the inter-system crossing time constant of the organic molecule to less than 10?6 s.

Abstract: A derivative with a heteroaromatic ring represented by General Formula (G1) is provided. R11 to R20 in the formula independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms in a ring. J represents a substituted or unsubstituted arylene group having 6 to 12 carbon atoms in a ring. Note that ? and ? may be bonded to each other to form a carbazole skeleton. Het is a substituent represented by General Formula (S1-1) or (S1-2). In General Formulae (S1-1) and (S1-2), Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring. R1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms in a ring.

Abstract: The present invention relates to substances, to electroluminescent device comprising these substances, and to the use thereof.

Abstract: The present invention relates to compounds of the general formula (S-A)n-T, in which at least one fluorescent group S is linked to a phosphorescent group T via a divalent group A, to the use thereof in an electronic device, and to a formula to a formulation and an electronic device which comprise the novel compounds.

Abstract: There is provided a compound having Formula I or Formula II In Formula I: R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least two of R1-R4 are aryl groups and at least one aryl group includes an N,O,S-heterocycle. When two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl; In Formula II: Q is a single bond or a hydrocarbon aryl; and R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least one of R5 and at least one of R6 are an aryl group. At least one aryl group includes an N,O,S-heterocycle.

Abstract: Organometallic soft salt compounds are provided. In particular, the compounds comprise mononuclear Ir-based soft salts. The compounds may be used in organic light emitting diodes (OLED) and light emitting cells (LEC).

Abstract: Film-forming formulations are provided that satisfy a plurality of criteria for inkjet printing, thermal printing, or both. Criteria for film-forming formulations are also provided for selecting vehicles, combinations of vehicles, and film-forming materials, based upon viscosity, surface tension, solubility, and properties of printed films formed by such formulations. Film-forming formulations useful in the fabrication of organic light emitting devices (OLEDs) are provided including formulations useful for the fabrication of OLED hole transport layers, hole injection layers, electron transport layers, electron injection layers, and emissive layers, of an OLED. Methods of evaluating formulations for suitability in inkjet printing, thermal printing, or both, are also provided.

Abstract: The present invention relates, inter alia, to metal complexes having improved solubility, to processes for the preparaion of the metal complexes, to devices comprising these metal complexes and to the use of the metal complexes.

Abstract: The invention relates to novel non-linear acene derivatives, methods of their preparation, their use as semiconductors in organic electronic (OE) devices, and to OE devices comprising these derivatives.

Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.

Abstract: This invention relates to electroactive compositions including anthracene derivative compounds. It also relates to electronic devices in which at least one active layer includes such a composition.

Abstract: According to one embodiment, there is provided a compound represented by Formula (1): where Cu represents a copper, PR1R2R3 is a phosphine compound coordinating with Cu, where R1, R2, R3, R4 and R5 may be the same or different, and represent a linear, branched or cyclic alkyl group having 1-6 carbon atoms or an aromatic cyclic group which may have a substituent, R6, R7, R8 and R9 each independently represents a halogen atom, cyano group, nitro group, linear, branched or cyclic alkyl group having 1-6 carbon atoms or H, and X is F, Cl, Br or I.

Abstract: The present invention provides white light emitting materials. The invention further provides a process for the preparation of white light emitting organogels using the concept of molecular self-assembly and partial energy transfer. The donor acceptor type molecules on coassembly and subsequent irradiation with suitable wavelength light produce white light. On irradiation, partial transfer of the excitation energy from the donor to the acceptor takes place, resulting a broad emission covering the entire range from 400-700 nm to give bright white light emission with CIE coordinates of (0.31, 0.35).

Abstract: Disclosed herein is a red phosphorescent compound of the following Formula 1: wherein is includes a phenyl part and a quinoline part, the quinoline part has one substituent selected from a C1-C4 alkoxy group and the phenyl part has substituents independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and is selected from 2,4-pentanedione, 2,2,6,6-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, and 2,2-dimethyl-3,5-hexanedione.

Abstract: A method of preparing hydrophobic silica particles includes the step of reacting together in a single step a mixture of silane ether monomers and organically modified silane ether monomers with a hydrolyzing agent. The method also includes producing hydrophobic silica microparticles and nanoparticles that can include dyes and/or magnetizable components. The silica nanoparticles can be used in the detection, visualization and/or analysis of latent fingerprints.

Abstract: Provided is a method of shielding ultraviolet light and increasing visible light, enabling shielding or removal of ultraviolet light, transmission of visible light, effective utilization of ultraviolet energy to obtain visible light, and not requiring use of rare metal thus being low in cost. The method has: a first excitation step of exciting a fluorescent material by external light of 200 nm to 330 nm: an internal light emission step in which the fluorescent material excited in the first excitation step emits internal light of 330 nm to 400 nm; a second excitation step of exciting the same or a different fluorescent material by external light of 330 nm to 400 nm and by the internal light of 330 nm to 400 nm; and a visible light emission step in which the fluorescent material excited in the second excitation step emits visible light of 400 nm or more.

Abstract: A novel phosphorescent organometallic iridium complex is provided in which a coordination position of a ligand with respect to a metal can be controlled in synthesis. A novel phosphorescent organometallic iridium complex is provided which can keep high quantum efficiency and can emit phosphorescence in the blue to green wavelength region. A phosphorescent organometallic iridium complex which includes a structure represented by General Formula (G1) and whose ligand is a 4H-1,2,4-triazole compound which has an unsubstituted phenyl group at the 3-position, a substituted or unsubstituted phenyl group at the 4-position, and a phenyl group at the 5-position. In the phenyl group at the 5-position, an alkyl group is bonded to at least one of the ortho-positions, and the other of the ortho-positions, the meta-positions, and the para-position are substituted or unsubstituted.

Abstract: An ink composition includes a colorant visible under visible light and a tagging composition, including a carrier and a detectable marker dispersed or dissolved in the carrier. The detectable marker is an isotope of an element, the isotope being present in the ink composition in a concentration ranging from about 1 parts per billion (ppb) to about 1000 ppb.

Abstract: There is provided conductive organic arylamine compounds. The compounds may be prepared as films and such films may be used as a hole transporting layer, an emissive layer or an electron transporting layer in organic light emitting devices.

Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N]2ML comprising two orthometalated ligands having imidazole moieties and an ancillary ligand of ?-diketonate type. The ortho-metalated transition metal complexes are represented by formula (I): It has been surprisingly found that when the metal has bound thereto both orthometalated ligands comprising imidazole moieties and an ancillary ligand of ?-diketonate type, the ligands advantageously participate in the emission process, significantly broadening emission in the visible region and enabling appreciable improvement of the white emission efficiency of complexes [C^N]2ML. Additional objects of the invention are the use of the light emitting materials and organic light emitting device comprising the light emitting material.

Abstract: A polymer useful in an optoelectronic device comprises structural unit of formula I: wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; Ar1 is aryl or heteroaryl; Ar2 is fluorene; R2 is alkylene, substituted alkylene, oxaalkylene, CO, or CO2; R3, R4 and R5 are independently hydrogen, alkyl, alkoxy, alkylaryl, aryl, arylalkyl, heteroaryl, substituted alkyl; substituted alkoxy, substituted alkylaryl, substituted aryl, substituted arylalkyl, or substituted heteroaryl; and L is derived from phenylpyridine, tolylpyridine, benzothienylpyridine, phenylisoquinoline, dibenzoquinozaline, fluorenylpyridine, ketopyrrole, 2-(1-naphthyl)benzoxazole)), 2-phenylbenzoxazole, 2 phenylbenzothiazole, coumarin, thienylpyridine, phenylpyridine, benzothienylpyridine, 3 methoxy-2-phenylpyridine, thienylpyridine, phenylimine, vinylpyridine, pyridylnaphthalene, pyridylpyrro

Abstract: Disclosed are an organic material including a compound represented by the following Chemical Formula 1, and an organic light emitting device including the organic material. In Chemical Formula 1, A is an oxygen (O) atom or a sulfur (S) atom, M is a divalent or trivalent metal atom, R1 is an organic group, Y is a substituted or unsubstituted condensed polycyclic aromatic group, Z1 to Z4 are independently a carbon atom or a nitrogen atom, m is an integer ranging from 1 to 4, and n is 2 or 3.

Abstract: The invention provides luminescent solid-state compositions comprising difluoroboron beta-diketonates wherein the compositions can exhibit mechanochromic luminescence. The mechanochromic effect on the luminescence can be reversible, such as thermally reversible. Various solid-state forms of the invention can have emission spectra that differ from the properties of the respective difluoroboron beta-diketonate in solution. The mechanochromic effect can be stimulated by pressure such as hand-writing, and can be reversed over a period of minutes to hours at room temperature. The invention also provides methods of making and methods of using the solid-state compositions, such as for sensors and for information displays for use in biological sensing, and in art, design, and consumer products.

Abstract: Scintillation materials of this invention have an alkali halide host material, a (first) scintillation dopant of various types, and a variety of second dopants (co-dopants). In another embodiment, the scintillation materials of this invention have an alkali halide host material, a (first) scintillation dopant of various types, a variety of second dopants (co-dopants), and a variety of third dopants (co-dopants). Co-dopants of this invention are capable of providing a second auxiliary luminescent cation dopant, capable of introducing an anion size and electronegativity mismatch, capable of introducing a mismatch of anion charge, or introducing a mismatch of cation charge in the host material.

Abstract: The present invention relates to a formulation, in particular for use in organic electroluminescent devices, comprising a carbazole compound, an electron-transport compound, a triplet emitter compound and at least one solvent, where the electron-transport compound encompasses a ketone compound or a triazine compound and where the carbazole compound contains at least two carbazole groups whose N atoms are connected to one another via an aromatic or heteroaromatic ring system. The invention is furthermore directed to organic electro-luminescent devices which comprise the mixtures according to the invention.

Abstract: A semiconductive conjugated polymer comprising a first repeat unit comprising general formula I: where Ar1, Ar3, and Ar5 are the same or different and wherein each represents an optionally substituted aryl or heteroaryl group; Ar2 and Ar4 are the same or different and each represent a substituted aryl or heteroaryl group; and Ar2 and Ar4 sterically interact with one another so as to cause an increase in the bandgap of the polymer.

Abstract: Disclosed herein are red phosphorescent compounds of the following one of Formulas 1 to 3 wherein Formula 1 R1 and R2 are independently a C1-C4 alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 2 R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 3 R1, R2, R3 and R4 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and wherein is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.

Abstract: A composition including: a phosphorescent light-emitting compound (B) that has a light-emitting spectrum peak smaller than 480 nm, a phosphorescent light-emitting compound (G) that has a light-emitting spectrum peak at 480 nm or larger and smaller than 580 nm, and a phosphorescent light-emitting compound (R) that has a light-emitting spectrum peak at 580 nm or larger and smaller than 680 nm, in which the phosphorescent light-emitting compound (R) is a phosphorescent light-emitting compound having a dendrimer structure. A liquid composition including the composition and a solvent, a film containing the composition, and a light-emitting device having an anode, a cathode, and an organic layer containing the composition provided between the anode and the cathode.

Abstract: Composition comprising a fluorescent light-emitting material and a triplet-accepting unit comprising an optionally substituted compound of formula (I): The composition may be used in an organic light-emitting device; the optionally substituted compound of formula (I) may be blended with or attached to the fluorescent light emitting material; and the composition may be deposited by solution deposition.

Abstract: There is provided an electroluminescent composition. The composition includes a material having Formula I In Formula I: R1 is the same or different at each occurrence and is selected from D, alkyl, alkoxy, silyl, and siloxane, or adjacent R1 groups may be joined together to form a 5- or 6-membered aliphatic ring; Ar1 and Ar2 are the same or different and are aryl groups; a is an integer from 0 to 6; b is an integer from 0 to 2; and c is an integer from 0 to 3.

Abstract: Organometallic compounds comprising a germanium-containing substituent are provided. The compounds may be used in organic light emitting devices to provide improved device efficiency, line shape and lifetime. In particular, the compounds comprise a phenylquinoline or phenylisoquinoline ligand having a germanium-containing substituent on the quinoline or isoquinoline portion of the ligand. These compounds may be advantageously used as red emitters in the emissive layer of organic light emitting devices.

Abstract: A nitrogen-containing graphene structure has a graphene structure including a monolayer or multilayer graphene nanosheet and nitrogen introduced into the graphene structure. The nitrogen-containing graphene structure preferably includes the above-described graphene structure having a sheet portion comprised of a monolayer or multilayer graphene nanosheet and containing, at an edge portion thereof, an armchair edge-face portion and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith; and a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) the carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) the carbon atoms constituting the sheet portion (including the carbon atom on the side shared by the terminal six-membered ring). A phosphor dispersion is a dispersion of such a nitrogen-containing graphene structure in a solvent.

Abstract: A light emitting body has a base material containing a graphene structure and a covering material for covering a surface of the base material. The graphene structure preferably includes a sheet portion made of a monolayer or multilayer graphene nanosheet and having, at an edge portion thereof, an armchair edge-face portion; and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith. Further, the graphene structure preferably includes a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion (including carbon atom on the side shared with the terminal six-membered ring).

Abstract: The present invention relates to a composite luminophore comprising an inorganic matrix and an organic fluorescent dye, wherein the inorganic matrix is formed from an inorganic compound, and wherein the organic fluorescent dye has one or more functional groups by means of which the fluorescent dye is incorporated into the inorganic matrix, or is bound chemically thereto. The present invention further relates to a process for preparing such a composite luminophore and to the use thereof.

Abstract: A composition can include a first moiety capable of being excited to an excited state, and a second moiety capable of accepting excited state energy from the first moiety. The second moiety is capable of emitting light with a FWHM of 15 nm or less when excited. The second moiety can be a J-aggregate and the first moiety can be a semiconductor nanocrystal.

Abstract: The present invention relates to phosphorescent organic electroluminescent devices which comprise at least one phosphorescent emitter and a matrix material in the emitting layer, where certain conditions must be satisfied for the positions of the triplet energy and the HOMO and LUMO.

Abstract: Described herein is a time-gated, two-step FRET relay effective to provide temporal transference of a prompt FRET pathway, or provide spectro-temporal encoding analytical signals and other information. A FRET relay assembly includes a long lifetime FRET donor (for example, a lanthanide complex), a semiconductor quantum dot (QD) configured as an intermediate acceptor/donor in FRET, and a fluorescent dye configured as a terminal FRET acceptor, wherein the long lifetime FRET donor has an excited state lifetime of at least one microsecond and the QD and fluorescent dye each have excited state lifetimes of less than 100 nanoseconds.

Abstract: Disclosed is an organic EL device element having high external quantum efficiency and long life time. A lighting device and a display device each using the organic EL device element are also disclosed. The organic EL element comprises plural organic compound layers including a light-emitting layer and at least one hole transport layer, interposed between an anode and a cathode, and a phosphorescent light-emitting compound contained in the light-emitting layer emits light. The organic EL device is characterized in that at least one hole-transport layer contains two or more polymerizable compounds represented by general Formula (1) or two or more polymer compounds having a structural unit derived from a compound. In the Formula (1) L1 represents a divalent bonding group, Ar1 through Ar4 represent an aromatic group, provided that at least one of Ar1 through Ar4 represents a polymerizable group as a substituent.

Abstract: According to the invention, there is provided a compound represented by a formula (1) below: wherein X represents a residue derived from an aryl ring or a heteroaryl ring, or a single bond, Ar1 and Ar2 respectively represent a phenyl group or heteroaryl group, Ar3 represents a group having 60 or less carbon atoms, the group represents a structure in which six or less aryl or heteroaryl groups which may have one or more substituents are conjugatedly linked, or the same group as a substituent at the ninth or tenth position on the anthracene ring, and n represents an integer of 0 or 1.

Abstract: The invention relates to novel copolymers comprising indenofluorene units and units of thiophene or its derivatives, to organic semiconductor (OSC) materials and organic electroluminescent materials comprising the copolymers, to the use of the copolymers and materials in electronic, electroluminescent or electrooptical devices, and to devices comprising the copolymers or materials.

Abstract: A material for an organic photoelectric device and an organic photoelectric device including the same, the material including an asymmetric compound represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, Ar1 is hydrogen or a substituted or unsubstituted aryl, provided that when Ar1 is a substituted aryl having a substituent, Ar2 is not the same as the substituent of Ar1, Ar2 and Ar3 are each independently a substituted or unsubstituted carbazolyl, a substituted or unsubstituted C2 to C30 heteroaryl, a substituted or unsubstituted C2 to C30 arylamine, or a substituted or unsubstituted C2 to C30 heteroarylamine, L1 and L2 are each independently a substituted or unsubstituted phenylene, a substituted or unsubstituted naphthylene, or a substituted or unsubstituted anthracene, and m and n are each independently integers of 1 to 4.

Abstract: The present disclosure relates to organometallic complexes and electronic devices containing the complexes. The complexes have the formula MYnZ, where n is 1, 2, or 3; M is a metal in a +2, +3, or +4 oxidation state, Y is selected from an 8-hydroxyquinolate and a substituted 8-hydroxyquinolate, and Z is a phenolate.

Abstract: Disclosed are encapsulation materials including an 80 to 99.5 weight percentage (wt %) of ethylene vinyl acetate copolymers (EVA) and a 0.5 to 20 weight percentage(wt %) of a photoluminescent polymer, wherein the EVA and the photoluminescent polymers are evenly blended. The encapsulation materials can be applied to packaging solar cells, and the encapsulating structure may protect the EVA from UV damage and enhance light utilization efficiency of the solar cell.

Abstract: The present invention relates to a class of luminescent and conductive polymer compositions having chromophores, and particularly solid films of these compositions exhibiting increased luminescent lifetimes, quantum yields and amplified emissions. These desirable properties can be provided through polymers having rigid groups designed to prevent polymer reorganization, aggregation or ?-stacking upon solidification. These polymers can also display an unusually high stability with respect to solvent and heat exposures. The invention also relates to a sensor and a method for sensing an analyte through the luminescent and conductive properties of these polymers. Analytes can be sensed by activation of a chromophore at a polymer surface. Analytes include aromatics, phosphate ester groups and in particular explosives and chemical warfare agents in a gaseous state.

Abstract: The invention provides methods for the application of active materials onto active surfaces useful in organic electronic devices. The methods of the invention include selecting a liquid composition including an active material and a suitable liquid medium whereby when the liquid composition is deposited on the desired active surface it has no greater than about a 40° contact angle; treating the active surface to raise its surface tension before the deposition of a liquid composition containing the desired active material is deposited thereon; and combination thereof. The invention also provides organic electronic devices having at least two active layers, wherein at least one active layer comprises an active material that was deposited using at least one practice of the method of the invention.

Abstract: A material for an organic EL element showing high light emission efficiency and high color purity of the emission light, an organic EL element, a lighting device and a displaying device each using the material.

Abstract: Compounds including optionally substituted Ring Systems 1-4 may be used as host in light-emitting devices.