摘要:
Disclosed is an electroluminescent device comprising a light-emitting layer containing a light emitting material that contains an organometallic complex comprising a metal selected from the group consisting of Pt, Pd and Ir, and a tridentate (N^C^N) ligand, wherein the tridentate (N^C^N) ligand represents a ligand that coordinates to the metal through a nitrogen donor bond, a carbon-metal bond, and a nitrogen donor bond, in that order, wherein at least one of the nitrogen donors is part of an aromatic ring or an imine group. The invention also includes a display or room lighting device employing the device of the invention and a process of emitting light from the device of the invention.The device of the invention provides good luminance efficiency.
摘要:
Disclosed is an electroluminescent device comprising a cathode, an anode, and, located there between, a light emitting layer (LEL) containing a light emitting material that contains an organometallic complex comprising Pt or Pd metal and a tridentate (N^N^C) ligand, wherein the tridentate (N^N^C) ligand represents a ligand that coordinates to the metal through a nitrogen donor bond, a second nitrogen donor bond, and a carbon-metal bond, in that order, wherein at least one of the nitrogen donors is part of an aromatic ring or an imine group, and wherein the Pt or Pd atom also forms a bond to an anionic ligand group L, wherein L represents alkyl, alkenyl, aryl, or a cyano carbon, or halogen, or RX, wherein X represents a substituent that forms a bond to the Pt or Pd atom and wherein X represents N, O, S, or Se, and R represents a substituent. Such a device provides useful light emissions.
摘要:
A color photographic element particularly useful for colorimetrically accurate recording of scene exposures is disclosed, which is capable of producing differentiable dye images suitable for scanning and electronic image processing. The element has red, green and blue light recording silver halide emulsion layer units and provides broad, hypsochromic green spectral sensitivity that overlaps with the red spectral sensitivity. The wavelength of maximum sensitivity of the red recording emulsion layer unit is between about 580 and 620 nm, the wavelength of maximum sensitivity of the green recording emulsion layer unit is between about 520 and 565 nm, the relative sensitivity of the green recording emulsion layer unit at 50% of the maximum sensitivity exhibits an overall breadth of at least about 65 nm, and the relative sensitivity of the green recording emulsion layer unit at 520 nm is at least 60% of the maximum.
摘要:
A photographic element comprises: a support and, coated on the support, a plurality of hydrophilic colloid layers, including radiation-sensitive silver halide emulsion layers, forming layer units for separately recording blue, green and red exposures, wherein, the red recording layer unit is comprised of at least one green-red sensitive emulsion having a peak dyed absorptance of between about 525 and about 600 nm, an overall half-peak absorptance bandwidth of between about 70 and about 150 nm, and a ratio of the bandwidths at 80% of peak absorptance to 50% of peak absorptance of greater than or equal to about 0.25. In preferred embodiments of the invention, the photographic element is especially suited for more accurately recording scenes according to the human visual system.
摘要:
A photographic element comprises: a support and, coated on the support, a plurality of hydrophilic colloid layers, including radiation-sensitive silver halide emulsion layers, forming layer units for separately recording blue, green and red exposures, wherein, the red recording layer unit is comprised of at least one green-red sensitive emulsion having a peak dyed absorptance of between about 525 and about 600 nm, an overall half-peak absorptance bandwidth of between about 70 and about 150 nm, and a ratio of the bandwidths at 80% of peak absorptance to 50% of peak absorptance of greater than or equal to about 0.25.In preferred embodiments of the invention, the photographic element is especially suited for more accurately recording scenes according to the human visual system.
摘要:
A photographic element comprises at least three light sensitive silver halide layers spectrally sensitized to the same region of the electromagnetic spectrum wherein the least sensitive such layer, or a nonsensitive layer adjacent thereto, comprises a compound which contains a releasable thiol fragment or a precursor thereof wherein:A. the amount of the thiol-containing compound or precursor contained in such layers is both sufficient to increase the extent of silver bleaching during bleaching and is greater than the amount contained in any of the more sensitive layers of the same sensitivity; andB. the thiol fragment contains a sulfur atom which is not directly bonded to an aromatic atom and contains a water-solubilizing group.
摘要:
A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
摘要:
A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
摘要:
An aqueous inkjet printing fluid composition for use in an inkjet printer comprising a silicon-based material which contacts the aqueous printing fluid composition, comprising in a concentration sufficient to inhibit corrosion of the silicon-based material when contacted by the aqueous printing fluid composition a soluble metal ligand complex of Formula (I): wherein M represents a divalent or a trivalent metal, R1 represents a hydrogen, or an alkyl, alkenyl, or aryl substituent, X1 and X2 each independently represent either O or S, Q represents the atoms necessary to form a five, six or seven-membered heterocyclic or carbocyclic ring, and the number of ligands n is 2 or 3. The useful lifetime of microelectromechanical fluidic devices based on silicon fabrication is extended.
摘要:
A process for forming a dispersion of milled solid particles of a compound comprising forming a milling mixture of a liquid medium, milling media having an average particle size of less than or equal to about 300 microns, and a solid compound in a mixing vessel, and agitating the milling mixture with a mixer to contact the milling media and solid compound and to reduce the solid compound to a desired average particle size to form a dispersion of milled solid particles in the liquid medium, wherein the volume ratio of the milling media to the combined volume of the liquid media and solid compound in the milling mixture is less than 1, a rotor-stator mixer comprising rotor and stator elements separated by a rotor-stator gap of greater than the average particle size of the milling media and not greater than about 2.5 mm is employed to agitate the milling mixture in a milling chamber of the rotor-stator mixer, and the solid compound is milled to a volume-weighted average equivalent sphere diameter particle size of less than or equal to about 200 nm. In a preferred embodiment, the milling media is a polymeric resin having a mean particle size of less than 100 micrometers. The method enables significantly reduced levels of milling media and facilitates separation of the dispersion from the milling media in the milling mixture.