Eastman-kodak Company

Zbyslaw R Owczarczyk

Xiqiang K Yang

David T Southby

David Howard Levy

Mark Edward Irving

Wojciech K Slusarek

Daniel L Kapp

Lyn Marie Irving

Louis Elbert Friedrich

Christopher T Brown

Tukaram K Hatwar

Paul B Merkel

Margaret Jones Helber

Joseph C Deaton

Jared B Mooberry

Jeffrey P Spindler

James Henry Reynolds

Denis Y Kondakov

Michele L Ricks

James J Seifert

Peter G Bessey

Scott R Conley

David J Giesen

Viktor V Jarikov

Benjamin P Hoag

David K Southby

An organic electroluminescent device comprises a cathode, an anode, and has therebetween a light-emitting layer comprising an emissive component represented by formula (I): wherein:

Organic element for electroluminescent devices

An electroluminescent device comprises a light-emitting layer containing a host and a light-emitting material wherein the light-emitting material comprises a boron complex containing boron complexed by two ring nitrogens of a deprotonated bis(aromatic)amine or bis(aromatic)methene ligand wherein the boron complex contains a tertiary amine substituent group. The invention provides a material for a light-emitting layer of an EL device that exhibits improved luminance efficiency.

Disclosed is an electroluminescent device comprising a light-emitting layer containing a phosphorescent light emitting material that contains an organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Os, Pt, and Pd and a pyrazole compound fused with at least one aromatic ring. The device provides useful light emissions.

Disclosed is a process of forming a bis(azinyl)amine-BFcomplex, where a boron atom is complexed by two ring nitrogens of a deprotonated bis(azinyl)amine compound, comprising the step of reacting BFwith a protonated bis(azinyl)amine in the presence of a polar aprotic organic solvent that is not reactive with the BFunder reaction conditions. Such process provides good yields, even when a bulky group is present on the bis(azinyl)amine compound.

Synthesis of bis(azinyl)amine-BF2 complex

Color photothermographic elements comprising phenolic thermal solvents

Disclosed is an OLED device comprising a light-emitting layer containing a host and a dopant where the dopant comprises a boron compound complexed by two ring nitrogens of a deprotonated bis(azinyl)amine ligand.

Thermally developable imaging system comprising a blocked color-forming agent in association with a hydroxy-substituted aromatic compound for promoting image formation

Color photothermographic elements comprising blocked developing agents

Imaging element containing a blocked photographically useful compound

This invention relates to a photothermographic color element containing a mixture of blocked developers in the same emulsion layer, which blocked developers having different onset temperatures. Such a mixture has been found to allow for lower film processing temperatures and/or shorter times of development with respect to the blocked developer having a higher onset temperature. Conversely, improved discrimination can be obtained with respect to the blocked developer having the lower onset temperature.

Photothermographic element containing a mixture of blocked developers

This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I:

Multilayer color photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a sulfinate blocked dye moiety contained in the element to release a solubilized unblocked dye.

Multilayer color photographic element containing a solubilized blocked

Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a nucleophile which can react with a uniform distribution of a blocked dye moiety contained in the element to release an unblocked dye.

Photographic elements containing blocked dye moieties

Photographic elements are described which contain a release compound that during photographic processing provides an imagewise distribution of a photographically inert compound which can react with a uniform distribution of a second compound contained in the element to form a photographically active compound.

Growing community of inventors

Webster, NY, United States of America

Zbyslaw R Owczarczyk