Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided wherein R1 and R2 may be the same or different and independently represent a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, or a substituted or unsubstituted, saturated or unsaturated hydrocarbon group provided that at least one of R1 and R2 has at least two carbon atoms, and wherein Ar1 and Ar2 may be the same or different and independently represent a substituted or unsubstituted aryl group. A process for preparing the compound is also provided wherein bathophenanthroline and an organolithium compound are subjected to nucleophilic substitution reaction to obtain the compound of the above formula [I] or [II].

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: A homopolymer or copolymer useful for inhibiting the migration of pigmented inks in porous inkjet receptor media is disclosed. The copolymer is comprised of at least two different hydrophilic monomers, each of whose homopolymers are hydrophilic yet the resulting copolymer from the different hydrophilic monomers is sparingly soluble in water. Methods of making and using such copolymer are also disclosed.

Abstract: This invention relates to (co)polymers which contain at least one repeat chain unit of the general formula (1) or (2) and optionally contain repeat units of the general formula (3) in which L1 and L2 mean a photoluminescent residue, wherein the proportion of structural units of the formulae (1) and/or (2) is in each case 0.5 to 100 mol. %, and (3) 0 to 99.5 mol. %, and the molar percentages add up to 100, to the use thereof for the production of electroluminescent devices and to the electroluminescent devices.

Abstract: An optical fluorescent composite which controls fluorescence intensity comprises a solid layer containing fluorescent material (such as a phosphor) formed on an optically transparent base or substrate and optically coupled to a spectrally selective filter, also formed on the base or substrate, that modifies the intensity of either or both the excitation or emission spectra of the phosphor. Devices constructed in this manner serve as stable references for fluorescent measurements. Sets of such device is made with filters having different transmittance amplitudes, can characterize fluorescent measurement response over several orders of magnitude. In one of numerous alternative structure, the fluorescent layer can be formed on one substrate, the filter formed on a second substrate and the two substrates joined together.

Abstract: An organic EL device includes a cathode, an organic electroluminescent layer and an anode, laminated in sequence. The organic layer is composed of a continuous organic medium A.sub.x B.sub.y, where A and B are components capable of transporting electrons and holes, respectively, x represents the content of the A component with a value ranging from 0 adjacent the anode to 100% adjacent the cathode, and y represents the content of the B component with a value ranging from 0 adjacent the cathode to 100% adjacent the anode. The lifetime of the device is improved by the elimination of heterojunctions in the continuous organic medium and suppression of the re-crystallization tendency of the organic materials. At least one fluorescent dye or pigment is incorporated in the organic layer to improve efficiency and color of the luminescence.

Abstract: An organic electroluminescence device in which the following total optical thickness is set at a value which enhances the intensity of the central wave length .lambda. (.lambda. being selected in the ranges of 440 to 490 nm, 500 to 550 nm, and 600 to 650 nm) of the electroluminescence light emitted from the organic multi-layer part having a refractive index of 1.6 to 1.

Abstract: Display functions are added freely to a card a with high printing quality by bonding a rewrite tape 7 onto a specified position of the card 1, i.e., at a position where the rewrite tape 7 is bonded onto a back area of a face of the card on which an IC card contact 3 is provided, and avoiding a back area 3' corresponding to the IC contact 3, an area 2 of magnetic stripes or back area 2' corresponding to the area 2, and a back area 4' corresponding to embossment 4.

Abstract: Electrochemical light emitting devices are disclosed which include a composite material in contact with two electrodes. The composite material is an admixture of ionic species and an `immobile` semiconductor and a high-boiling gel-forming liquid. The presence of high-boiling gel-forming liquid improves the efficiency of the devices. The semiconductor is capable of supporting both p- and n-type carriers and having a doping profile which can be dynamically changed in a controlled fashion through reversible electrochemical oxidation and reduction. Devices having this structure may be used to generate electrochemically induced p-n junctions, thereby providing a new means of exploiting the light emitting properties of such junctions under an applied voltage. Systems and methods for generating useful levels of light employing these devices are also disclosed.

Abstract: Resilient floor coverings are disclosed wherein the wear layer is a polymer composition, prepared from an ionomer resin and a polyfunctional olefinic compound, such as a polyfunctional acrylate. These floor coverings have good visual appearance and good burn, abrasion and stain resistance.