Abstract: An organic EL device, including an anode and a cathode, and at least one organic luminescent layer containing a compound of the formula: ##STR1## wherein: X=S, or OR.sub.1, and R.sub.2 are individually alkyl of from 1 to 20 carbon atoms, aryl or carbocyclic systems;R.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms, or a branched or unbranched 5 or 6 member substituent ring connecting with R.sub.1, R.sub.2 respectively; andR.sub.5 and R.sub.6 are individually alkyl of from 1 to 20 carbon atoms, which are branched or unbranched.

Abstract: An organic EL device including an anode, a cathode, and an organic electroluminescent element between the anode and the cathode; the organic electroluminescent element includes an organic material or a mixture thereof of 9,10-bis(3'5'-diaryl)phenyl anthracene derivatives.

Abstract: An organic EL device, includes an anode and a cathode, and at least one organic luminescent medium containing a compound of the formula: ##STR1## wherein: R.sub.1, and R.sub.2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems; andR.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms, and a branched or unbranched 5 or 6 member substituent ring connecting with R.sub.1, R.sub.2 respectively; andR.sub.5 is alkyl of from 2-20 carbon atoms; sterically hindered aryl and heteroaryl; andR.sub.6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R.sub.5.

Abstract: An organic EL device comprising an anode, a cathode, and an organic electroluminescent element between the anode and the cathode; the organic electroluminescent element includes an organic material or a mixture thereof of 9,10-di-(2-naphthyl)anthracene derivatives.

Abstract: An organic EL device, includes an anode, cathode, and at least one organic luminescent layer including a compound of the formula: ##STR1## where: n is an integer of 2 or 3;M is a divalent metal or a trivalent metal;G is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group, both the aryl and the heteroaryl groups having 6 to 24 carbon atoms, wherein the substituted aryl or heteroaryl group is an alkyl, haloalkyl group having 1-8 carbon atoms, an alkoxy or haloalkoxy group having 1-18 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroaryl;R.sup.1 and R.sup.2 are individually hydrogen, an alkyl or haloalkyl group having 1-18 carbon atoms, halogen, cyano, amono, amido, sulfonyl, carbonyl, and 5-24 atoms necessary to complete a fused aromatic ring.

Abstract: A red fluorescent material includes a compound of the formula: ##STR1## wherein: R.sub.1, and R.sub.2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems; andR.sub.3, and R.sub.4 are individually alkyl of from 1 to 10 carbon atoms, and a branched or unbranched 5 or 6 member substituent ring connecting with R.sub.1, R.sub.2 respectively; andR.sub.5 is alkyl of from 2-20 carbon atoms; sterically hindered aryl and heteroaryl; andR.sub.6 is alkyl of from 1 to 10 carbon atoms, and a 5 or 6-member carbocyclic ring connecting with R.sub.5.

Abstract: An organic EL device, comprising an anode and a cathode, and at least one electron injecting and transporting layer containing fluorescent materials;the fluorescent materials contains a compound of benzazoles of the formula: ##STR1## wherein: n is an integer of from 2 to 8;Z is --O--, --NR or --S--; andR and R' are individually hydrogen; saturated aliphatic of from 1 to 24 carbon atoms, for example, propyl, t-butyl, heptyl, and the like; aryl of from 6 to 20 carbon atoms, for example, phenyl and naphthyl, furyl, thienyl, pyridyl quinolinyl and other heterocyclic systems; or halo such as chloro, fluoro, and the like; or R and R' individually comprise the atoms necessary to complete a fused aromatic ring;B is a linkage unit which is able to conjugately, or unconjugately connect multiple benzazoles.

Abstract: A luminescent material including a compound of the formula: ##STR1## where: n is an integer of 2 or 3;M is a divalent metal or a trivalent metal;G is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group, both the aryl and the heteroaryl groups having 6 to 24 carbon atoms, wherein the substituted aryl or heteroaryl group is an alkyl, haloalkyl group having 1-8 carbon atoms, an alkoxy or haloalkoxy group having 1-18 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroaryl; andR.sup.1 and R.sup.2 are individually hydrogen, an alkyl or haloalkyl group having 1-18 carbon atoms, halogen, cyano, amono, amido, sulfonyl, carbonyl, and 5-24 atoms necessary to complete a fused aromatic ring.

Abstract: An electroluminescent device includes an anode, a positive-hole transporting layer made of an organic compound, a fluorescent emitting layer made of an organic compound, a cathode. The fluorescent emitting layer includes a red light emitting material uniformly dispersed in a host emitting material. The host emitting material being adapted to emit in the blue green regions so that the light produced by this device is substantially white.

Abstract: An organic EL device, comprising an anode and a cathode, and at least one organic luminescent medium containing a compound of benzazoles of the formula: ##STR1## wherein: n is an integer of from 3 to 8;Z is O, NR or S; andR and R' are individually hydrogen; alkyl of from 1 to 24 carbon atoms, for example, propyl, t-butyl, heptyl, and the like; aryl or hetero-atom substituted aryl of from 5 to 20 carbon atoms for example, phenyl and naphthyl, furyl, thienyl, pyridyl, quinolinyl and other heterocyclic systems; or halo such as chloro, fluoro; or atoms necessary to complete a fused aromatic ring;B is a linkage unit consisting of alkyl, aryl, substituted alkyl, or subsituted aryl which conjugately or unconjugately connects the multiple benzazoles together.

Abstract: A compound of the formula (I) or (II): ##STR1## where R.sup.1, R.sup.2, R.sup.5 and R.sup.6 are the same or different and represent a hydrogen atom or a halogen atom and R.sup.1 and R.sup.2 may combine to form a ring; R.sup.3, and R.sup.4 are the same or different and represent a hydrogen atom, a halogen atom, a benzoyl group, a group of the formula --L(CH.sub.2).sub.n R.sup.8 where n is 1 to 8, R.sup.8 is a hydrogen, hydroxy, amino, dialkylamino, --COR.sup.16 or --COOR.sup.14 where R.sup.16 is a hydrogen, chlorine, COCl, C.sub.1 -C.sub.8 alkyl, --NR.sub.2 or aryl and R.sup.14 is a hydrogen, C.sub.1 -C.sub.8 alkyl, aryl, COR, 2,4-dinitrophenyl, N-imido or --NR.sub.2 and L is a direct bond or C.dbd.O; W is .dbd.O; W.sup.1 is hydrogen or --OR.sup.9, where R.sup.9 is hydrogen, C.sub.1 -C.sub.8 alkyl, acyl or a group of the formula --(CH.sub.2).sub.n R.sup.10 where n is 1 to 8 and R.sup.10 is amino, dialkylamino, hydroxy, acryloyl or methacryloyl; Y is oxygen, sulfur, selenium, tellurium, C.dbd.O, or >N--R.

Abstract: An organic electroluminescent device of improved efficiency and operational stability has been disclosed. The device comprises of an anode and a cathode, and an organic electroluminescent element disposed between the anode and cathode. Characterized in the organic electroluminescent element is at least one fluorescent emitting layer containing a mixture of two or more materials. The mixture contains a quinacridone compound of the formula: ##STR1## where R.sub.3 and R.sub.4 are independently alkyl, aryl, fused aryl or halogen; and R.sub.5 and R.sub.6 are independently alkyl, substituted alkyl, aryl, or substituted aryl; and n=0, 1, 2 or 3.

Abstract: A method for making trialkali metal and triammonium salts of 2,4,6 trimercapto-s-triazine comprising the steps of:(a) forming a reaction mixture of an acetone solution of cyanuric chloride and an aqueous solution of sodium hydrosulfide hydrates;(b) stirring the mixture thereby forming 2,4,6-trimercapto-s-triazine;(c) acidifying the mixture to form a precipitate; and(d) dissolving the precipitate in a basic solution selected from alkali metal hydroxides and ammonium hydroxide thereby forming a trialkali metal or triammonium salt of 2,4,6 trimercapto-s-triazine.

Abstract: An organic electroluminescent device which includes an anode and a cathode, and an organic electroluminescent element disposed between the anode and cathode. The organic electroluminescent element has at least one hole transporting layer. The hole transport layer includes a polyaromatic amine of the formula: ##STR1## where n is equal to 3, 4, 5, or 6;R.sup.1 is selected from the group consisting of hydrogen, alkyl, aryl and substituted aryl;R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl and substituted aryl; andR is selected from the group consisting of hydrogen, and alkyl.

Abstract: The present invention relates to a novel class of compounds which absorb light at wavelengths greater than 350 nm and are useful as fluorescers or as photoinitiators. The present invention provides compounds of the formulas (I) and (II) and their equivalents (the nomenclature of the compounds used herein is based on the numbering of positions as shown in formula (I)): ##STR1## where: when W is .dbd.O, W.sup.1 is hydrogen or --OR.sup.9 and when W is .dbd.NR.sup.+.sub.2, W is hydrogen or NR.sub.2.sup.+2, A is hydrogen, alkenyl, alkyl or an election withdrawing group, and the remaining groups are as defined in the disclosure.

Abstract: Disclosed is a photooxidizable initiator composition comprising a fluorone initiator and a coinitiator which is capable of accepting an electron from the fluorone upon excitation of the fluorone by actinic radiation, wherein the composition produces free radicals which initiate free radical reactions; and photohardenable compositions which comprise a free radical polymerizable compound, a fluorone initiator and a coinitiator capable of accepting an electron from the fluorone upon exposure of the composition to actinic radiation, and producing free radicals which initiate free radical polymerization.