Abstract: Light emitting devices are described which incorporate, as the light emitting element, a dendrimer of which the constituent dendrons include a conjugated dendritic structure comprising aryl and/or heteroaryl groups connected to each other via bonds between sp2 hybridised ring atoms of said aryl or heteroaryl groups.

Abstract: Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies >2.10 eV are required.

Abstract: A fluorescent solid ink, and a method for making such ink, including an ink vehicle and a fluorescent particle. The fluorescent particle includes a fluorescent pigment, such as a trans-dicarboxylic-indenofluorenone, and at least one stabilizing wax chemically attached to the fluorescent pigment. The stabilizing wax includes an amine group at its terminal end and the fluorescent pigment includes at least one carboxylic acid group, where the amine group reacts with the carboxylic acid group to form an amide bond.

Abstract: The fluorescent dye-containing particle of the present invention includes a porous matrix composed mainly of metal oxide, an organic fluorescent dye contained in the porous matrix, and a water-soluble polymer contained in the porous matrix. The fluorescent dye-containing particle can be produced by the steps of: preparing a dye-containing sol solution containing a sol solution obtained by hydrolysis of a metal compound, an organic fluorescent dye, and a water-soluble polymer; and forming a particle from the dye-containing sol solution by spray drying process.

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: A fluorescent article includes an underlayer colored fluorescent film and an overlayer colored fluorescent film, which is provided over the underlayer colored fluorescent film. The underlayer colored fluorescent film includes a first fluorescent colorant in an underlayer polymer matrix. The overlayer colored fluorescent film includes a second fluorescent colorant in an overlayer polymer matrix. The second fluorescent colorant in the overlayer film at least partially blocks light in a first wavelength range while allowing transmission of an amount of light in a second wavelength range effective to make the first fluorescent colorant fluoresce.

Abstract: Disclosed is a composition containing a compound having a benzotriazole ring structure and a phosphorescent compound.

Abstract: The present invention pertains to a method of preparing a component layer for organic light emitting diodes involving milling a composition comprising: at least one component material selected from the group consisting of hole transporting materials, electron transporting materials, hole injection materials, electron injection materials, and emitting materials; a solvent; and a binder. It has been found that, when milling is used for the preparation of a dispersion or suspension, the surface quality of the resultant component layer can be improved, thereby significantly improving the performance of the organic light emitting device. The present invention also provides organic light emitting devices including the component layer prepared by the above preparation method.

Abstract: An optochemical sensor element suitable for sensing an analyte comprises a polymeric material in which at least a portion of the polymer material is solvent crazed to provide a multiplicity of pores of controlled nanometer size, and an indicator dye impregnated into the pores, in which optochemical sensor element the indicator dye is a long-decay photoluminescent dye selected from the group consisting of: phosphorescent platinum(II)—and palladium (II) complexes of porphyrin dyes such as octaethylporphine, coproporphyrin, octaethylporphine -ketone, benzoporphine, tetra (pentafluorophenyl) porphine, chlorin e6; fluorescent complexes of ruthenium (II), osmium(II), iridium(III) and europium (III); or derivatives or close analogs of these dyes. The sensor element in the presence of the analyte alters a photoluminescence parameter thus allowing sensing and/or quantification of the analyte.

Abstract: The invention relates to conjugated polymers comprising indacenodithiophene or indacenoselenophene units or derivatives thereof, to methods of their preparation, to novel monomer units used therein, to the use of the polymers in organic electronic (OE) devices, and to OE devices comprising the polymers.

Abstract: Fluorescent polymeric materials are disclosed comprising a polymer and one or more lipid soluble rhodamine dyes. The materials are especially useful in the preparation of multicolored microparticles, especially multicolored polystyrene microparticle, for use in the multiplexed analysis of a plurality of analytes in a single sample. When excited by a light source, the materials give off a unique emission based on the nature, concentration and ratio of the dyes therein. Methods of preparing and using said materials are also disclosed.

Abstract: High-molecular compounds comprising repeating units represented by the general formula (1) or (2) and having number-average molecular weights of 103 to 108 in terms of polystyrene: (1) [wherein Ar1 and Ar2 are each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and X1 and X2 are each independently O, S, C(?O), S(?O), SO2, C(R1)(R2), Si(R3)(R4), N(R5), B(R6), P(R7), or P(?O)(R8), with the provisos that X1 and X2 must not be the same and that X1 and Ar2 are bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar1, and X2 and Ar1 are bonded respectively to the adjacent carbon atoms constituting the aromatic ring of Ar2] (2) [wherein Ar3 and Ar4 are each independently a trivalent aromatic hydrocarbon group or a trivalent heterocyclic group; and X3 and X4 are each independently N, B, P, C(R9), or Si(R10), with the provisos that X3 and X4 must not be the same and that X3 and Ar4 are bonded respectively to the adjacent carbon atoms constituting t

Abstract: A thiophene compound having sulfonyl groups which is represented by the formula [1]. It has high heat resistance and high unsusceptibility to oxidation and can improve solubility and dispersibility in various solvents. [In the formula, R1 and R2 each independently represents hydrogen, halogeno, cyano, etc.; and R3 and R3? each independently represents C1-20 alkyl, C1-20 haloalkyl, phenyl optionally substituted by W, thienyl optionally substituted by W, etc. (W represents chlorine, etc.).

Abstract: It is an object to improve photoelectric conversion efficiency by use of a wavelength conversion film that is formed without dispersion of wavelength conversion substance and by using no rare earth compound. There is provided a composition for easily forming such a wavelength conversion film by spin-coating or the like. The present invention relates to a composition for forming a wavelength conversion film for a photovoltaic device, comprising a polymer or an oligomer in which a fluorescent moiety is incorporated, and a solvent. The fluorescent moiety may be incorporated in a main chain or a side chain of the polymer or the oligomer. The present invention also relates to a wavelength conversion film for a photovoltaic device that is formed from the composition for forming a wavelength conversion film.

Abstract: The present invention provides partially fluorescent nanoparticles and methods of making and using the partially fluorescent nanoparticle having a nanoparticle with a matrix and a fluorescent dye dispersed in or about the matrix, wherein at least a portion of the fluorescent dye has been anisotropically bleached.

Abstract: Provided are a conducting polymer composition and an electronic device including a layer formed using the conducting polymer composition. The conducting polymer composition contains: at least one compound selected from the group consisting of a siloxane compound of formula (1) below, a siloxane compound of formula (2) below, and a silane compound of formula (3) below; and a conducting polymer: where R1, R2, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, D, p, m, q, and r are the same as described in the detailed description of the invention. The electronic device including a layer formed using the conducting polymer composition has excellent electroluminescent characteristics and long lifetime.

Abstract: A subject for the invention is to provide a charge-transporting polymer having high hole-transporting ability and excellent solubility and film-forming properties and a composition for organic electroluminescent element which contains the charge-transporting polymer. Another subject for the invention is to provide an organic electroluminescent element which has a high current efficiency and high driving stability. The charge-transporting polymer comprises a group represented by the following formula (1) as a side chain: wherein in formula (1), the benzocyclobutene ring may have one or more substituents. The substituents may be bonded to each other to form a ring. The spacer represents a group which links the benzocyclobutene ring to the main chain of the charge-transporting polymer through three or more single bonds.

Abstract: Provided are a light emitting layer including molten salt and an organic electroluminescent device comprising the light emitting layer. When the organic electroluminescent device is operated, a field induction charge separation layer is formed in the light emitting layer including the molten salt and thus, carrier injection is improved, thereby providing a light emitting layer having improved light emitting efficiency. An organic electroluminescent device including the light emitting layer has low operating voltage and long lifespan.

Abstract: A composite film, a flexible substrate, and an organic light emitting device, the composite film including a composite including a sulfonic acid group containing moiety connected by an ether linkage (—O—) to an inorganic material having a nano-sized interlayer distance.

Abstract: A light emitting composition includes a light-emitting lumophore-functionalized nanoparticle, such as an organic-inorganic light-emitting lumophore-functionalized nanoparticle. A light emitting device includes an anode, a cathode, and a layer containing such a light-emitting composition. In an embodiment, the light emitting device can emit white light.

Abstract: A light-emitting material comprising a conjugated polymer and a blue-light emitting perylene.

Abstract: A polymeric light emitting substance having a polystyrene reduced number-average molecular weight of from 103 to 108 wherein this light emitting substance has in the main chain or side chain a metal complex structure showing light emission from the triplet excited state, and the substance can form a light emitting layer by industrially simple application methods such as a spin coat method, inkjet method, printing method and the like.

Abstract: A polymer compound that, when used for fabrication of a light emitting device, results in an excellent luminance lifetime for the obtained light emitting device. A polymer compound comprising a constitutional unit represented by formula (1). (In the formula, R1 and R2 each independently represent an unsubstituted alkyl group. R3 and R4 each independently represent a group other than an unsubstituted alkyl group. R5 and R6 each independently represent an unsubstituted or substituted alkyl, unsubstituted or substituted alkoxy or unsubstituted or substituted aryl group. The letters a and b each independently represent an integer of 0-4. The letters c and d each independently represent an integer of 0-3. When multiple R3, R4, R5 and R6 groups are present, they may be the same or different.

Abstract: An improved composition for ink jet printing an opto-electrical device, which composition comprises a solution-processable host material and a metal complex, wherein the viscosity of the composition exceeds 12 mPa·s at 20° C.

Abstract: The invention provides organic compounds of the general structure (1) that are photoluminescent and electroluminescent, emitting intense blue light. The invention further provides methods of synthesizing such compounds, methods of producing photoluminescence and electroluminescence, methods of applying the compounds in thin films, and uses of the compounds of the invention in luminescent probes, electroluminescent displays and as pH probes and metal ion detectors.

Abstract: Metal complexes of formula I and IA and polymers derived from the complexes are useful in optoelectronic devices wherein M is Ir, Co or Rh; is a cyclometallated ligand; R1 is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, or substituted arylalkyl; R2 is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl; and at least one of R1 and R2 is other than hydrogen; R1a is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, or substituted arylalkyl; R2a is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl; and at least one of R1a and R2a is substituted alkyl, substituted aryl, substituted arylalkyl, and at least one substitutent of the substituted alkyl, substituted aryl, or substituted arylalkyl is a polymerizable group.

Abstract: A light-emitting polymer has less than or equal to 5 mol % of a light-emitting optionally substituted structural unit having general formula 1: or fused derivatives thereof. The structural unit may comprise terminal groups of a polymer main chain, or be provided as repeat units at concentrations of less than 1 mol % in the polymer main chain. In particular, a polymer having fluorene repeat units, such as a homopolymer of 9,9-dialkylfluoren-2,7-diyl, may be utilized to provide electron transport and a copolymer comprising triarylamine repeat unit may be utilized to provide hole transport in an OLED device.

Abstract: A non-linear optical device comprising a polymer configured to be photorefractive upon irradiation by a green laser. The polymer comprises a repeating unit including a moiety selected from the group consisting of the structures (M-1), (M-2) and (M-3), as defined herein.

Abstract: In the invention, use is made of at least one metal organosilicate polymer, in the form of particles, having one of the following formulae I and II: R4Si4Al2O8(OH)x,??Formula I: R8Si8M6O16(OH)y,??Formula II: for the protection from oxidation and/or electromagnetic radiation of a compound sensitive to oxidation and/or to electromagnetic radiation. The invention finds application in particular in the field of the protection from oxidation and photoaging of various materials.

Abstract: The invention relates to novel polythiophene-polyanion complexes which are soluble or dispersible in nonpolar organic solvents, and to the use thereof.

Abstract: The invention relates to conjugated polymers comprising benzo-bis(silolothiophene) units or derivatives thereof, to methods of their preparation, to novel monomer units used therein, to the use of the polymers in organic electronic (OE) devices, and to OE devices comprising the polymers.

Abstract: This invention relates to a hat emitting device which comprises at least one layer that contains an organometallic dendrimer having a core comprising a metal cation. The invention also relates to organometallic dendrimers and methods for producing the same.

Abstract: Polymers including at least one structural unit derived from a compound of formula I or including at least one pendant group of formula II may be used in optoelectronic devices wherein R1, R3, R4 and R6 are independently hydrogen, alkyl, alkoxy, oxaalkyl, alkylaryl, aryl, arylalkyl, heteroaryl, substituted alkyl; substituted alkoxy, substituted oxaalkyl, substituted alkylaryl, substituted aryl, substituted arylalkyl, or substituted heteroaryl; R1a is hydrogen or alkyl; R2 is alkylene, substituted alkylene, oxaalkylene, CO, or CO2; R2a is alkylene; R5 is independently at each occurrence hydrogen, alkyl, alkylaryl, aryl, arylalkyl, alkoxy, carboxy, substituted alkyl; substituted alkylaryl, substituted aryl, substituted arylalkyl, or substituted alkoxy, X is halo, triflate, —B(OR1a)2, or ?located at the 2, 5- or 2, 7-positions; and L is derived from phenylpyridine, tolylpyridine, benzothienylpyridine, phenylisoquinoline, dibenzoquinozaline, fluorenylpyridine, ketopyrrole, 2-(1-naphthyl)benzo

Abstract: Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies >2.10 eV are required.

Abstract: A method for making an electrophoretic solution includes: including two kinds of particles having different charging polarities into the electrophoretic solution; calculating a mixing ratio so that charge amounts of the two kinds of particles become approximately equal to each other on a basis of a unit volume of a dispersion medium; and mixing the two kinds of particles in each mixed quantity that satisfies the calculated mixing ratio.

Abstract: Linear polycarbonate resin virtually free of surface defects that impair the suitability of the resin for demanding optical application is disclosed. Also disclosed is a process for the manufacture of the resin. The surface defects included in the resin are in the form of transparent fluorescing particles, the particle count of which portion that are 15 and 250 ?m in size, is up to 1.8 counts/g, said count being determined by exciting the residue remaining after filtering a solution of said polycarbonate in methylene chloride through a Teflon filter of 5 ?m pore size at a wavelength of 400-440 nm, 25× overall magnification and illumination time of 40 millisec. The polycarbonate is suitable for making films of improved optical properties.

Abstract: A charge-neutral organometallic dendrimer is described, said dendrimer having the formula (I): CORE-[DENDRITE(-Q)a]n??(I) in which CORE represents a group of formula MXXYZ, in which M represents a metal cation, x represents an integer of 1 or more, each X which may be the same or different represents a mono-, bi- or tri-dentate coordinating group, z represents 0 or an integer of 1 or more, and each Y which may be the same or different represents a coordinating group, the total of (b.x)+(c.

Abstract: A copolymer having a block (A?) composed of a repeating unit represented by the formula (I-1), and/or a block (A) containing a repeating unit represented by the formula (I-1) and a repeating unit represented by the formula (II). (wherein X1, X2 and X3 may be the same or mutually different and represent an oxygen atom, a sulfur atom or C(R7)?C(R8)—, and R1, R2, R2, R4, R5, R6, R7 and R8 may be the same or mutually different and represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an arylalkenyl group, an arylalkynyl group, a mono-valent heterocyclic group, a heterocyclic thio group, an amino group, a silyl group, an acyl group, an acyloxy group, an imine residue, an amide group, an acid imide group, a carboxyl group, a cyano group or a nitro group, and m and n may be the same or mutually different and represent 2 or 3.

Abstract: An organic light emitting device (OLED) includes a polymeric fluorescent light emitting material doped with a phosphorescent dopant to form a fluorescent light emitting layer. The fluorescent light emitting layer may inhibit or prevent device degradation without affecting light emission from the light emitting layer, and may improve the service life of the OLED.

Abstract: Upconversion fluorescent nano-structured material(s) comprising at least one compound of formula (M1)j(M2)kXn:(M3)q and at least one polymer, wherein: each X is the same or different and is selected from the group consisting of: halogen, O, S, Se, Te, N, P and As; each M1, if present, is the same or different and is selected from the group consisting of: Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, O and NH4; each M2 is the same or different and is a metal ion; each M3, independently, is the same or different and is selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; j is 0?j?10; k is 1?k?10; n is 1?n?10; and q is 1?q?10. In particular, the polymer is wherein the polymer soluble in polar solvents.

Abstract: Disclosed herein is a quantum dot phosphor for light emitting diodes, which includes quantum dots and a solid substrate on which the quantum dots are supported. Also, a method of preparing the quantum dot phosphor is provided. Since the quantum dot phosphor of the current invention is composed of the quantum dots supported on the solid substrate, the quantum dots do not aggregate when dispensing a paste obtained by mixing the quantum dots with a paste resin for use in packaging of a light emitting diode. Thereby, a light emitting diode able to maintain excellent light emitting efficiency can be manufactured.

Abstract: Disclosed is a composition comprising a compound having a saturated heterocyclic structure, in which the number of ring-constituting members containing a nitrogen atom is 5 or more, and a phosphorescent compound.

Abstract: Disclosed is a composition comprising a compound having residues of at least two nitrogenated polycyclic compounds selected from the group consisting of nitrogenated polycyclic compounds represented by formulae (1-1), (1-2), (1-3) and (1-4) [wherein R's independently represent a hydrogen atom or a substituent and may be the same as or different from one another] and a phosphorescence-emitting compound.

Abstract: Disclosed is a composition containing a metal complex and an organic compound, wherein the difference between the absolute value of the energy level of the lowest unoccupied molecular orbit of said metal complex and the absolute value of the lowest unoccupied molecular orbit of said organic compound, as calculated with a computational technique, is less than 0.40 eV.

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: A composition comprising a compound represented by the following formula (1): wherein Ar represents an aryl group or a mono-valent heterocyclic group.) or a compound having a residue of a compound represented by the above-described formula (1), and a compound represented by the following formula (2): wherein one member of Z1 to Z3 represents —N? and two remainders thereof each represent —C(R?)?; Z4 and Z5 each represent —C(R?)?; one member of Z6 to Z8 represents —N? and two remainders thereof each represent —C(R?)?; Z9 and Z10 each represent —C(R?)?; R? represents a substituent such as a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group and the like. or a compound having a residue of a compound represented by the above-described formula (2).

Abstract: Disclosed is a composition comprising: a compound having residues of at least two kinds of nitrogenated compounds selected from the group consisting of nitrogenated compounds represented by formulae (1-1), (1-2), (1-3) and (1-4) [wherein R's independently represent a hydrogen atom or a substituent and may be the same as or different from one another]; and a phosphorescent light-emitting compound.

Abstract: The present invention relates to aromatic amines and to electronic devices in which these amines are used, in particular, as matrix material in the emitting layer and/or as hole-transport material and/or as electron-blocking or exciton-blocking material and/or as electron-transport material.

Abstract: The present invention relates to the use of heterocyclic radicals or diradicals, their dimers, oligomers, polymers, dispiro compounds and polycycles for use as dopant for doping an organic semiconductive matrix material, where the dopants have a structure based on the following formulae.

Abstract: The present invention relates to electroluminescent polymers which comprise 2-vinylthiophenylbenzene derivatives as recurring units, to a process for the preparation thereof, to blends and formulations comprising these polymers, and to the use of these polymers in electronic devices, in particular in organic light-emitting diodes, so-called OLEDs.