Abstract: This invention relates to compositions and electroluminescent (EL) devices that have enhanced performance as a result of a novel class of anthracene derivatives used as host materials for a full range of color dopands. When using coumarin derivatives as color dopands in the anthracene derivatives in an EL device, the device performs a desirable light emitting efficiency and durability. The performance of the EL device can be further improved by using benazole derivatives as the electron transporting layer. The organic EL device of the present invention is useful in preparing display devices.

Abstract: This invention relates to compositions and electroluminescent (EL) devices that have enhanced performance as a result of a mixture of isomeric aromatic amine (IAA) compounds. The mixture can be vacuum evaporated to form amorphous thin films.

Abstract: This invention relates to compositions and electroluminescent (EL) devices that have enhanced performance as a result of a mixture of isomeric aromatic amine (IAA) compounds. The mixture can be vacuum evaporated to form amorphous thin films.

Abstract: An organic electroluminescent (EL) device comprised, in the following sequence, of an anode, an organic hole injecting and hole transporting layer, an organic electron injecting and electron transporting layer, and a cathode, wherein said organic hole injecting and transporting layer is comprised of a mixture of a tertiary aromatic amine and a polycyclic aromatic hydrocarbon compound.

Abstract: An organic electroluminescent (EL) device with a charge transport component of an indolocarbazole compound represented by Formulas (I) or (II) ##STR1## wherein R and R' are independently selected from the group consisting of hydrogen, alkyl, alkoxyl, aryl, and halogen; m and n are numbers from 0 to 4; A.sup.1 and A.sup.2 are arylene; Ar.sup.1, Ar.sup.2, Ar.sup.3, and Ar.sup.4 are aryl; R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl, alkoxyl, aryl, and halogen; and p is a number from 1 to 3.

Abstract: An organic electroluminescent device member comprised of a charge transport component of an indolocarbazole represented by Formulas (I), (II), (III), (IV), (V), or (VI); or optionally mixtures thereof ##STR1## wherein R and R' are independently selected from the group consisting of a hydrogen atom, halogen atom, alkyl, alkoxyl, and aryl; m and n are numbers of 0 to 4; R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl, aryl, and vinyl; R.sup.3 and R.sup.4 are independently selected from the group consisting of a hydrogen atom, halogen atom, alkyl, alkoxy, and aryl, and p is a number from 1 to 3.

Abstract: A luminescent composition containing a mixture of a fluorescent material and a metal chelate compound of the formulaL.sub.n --M.sup.+n (I)wherein M represents a metal; n is a number of from 1 to 3, and L is a ligand of the formula ##STR1## wherein Ar is an aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen, and Z is a suitable aromatic component.

Abstract: A metal chelate compound of the formulaL.sub.n --M.sup.+n (I)wherein M represents a metal; n is an integer, or number of from 1 to 3; and L is a ligand of ##STR1## wherein Ar is aryl; X is selected from the group consisting of oxygen, sulfur, and selenium; N is nitrogen; O is oxygen; and Z is a suitable aromatic component.

Abstract: An organic electroluminescent (EL) device comprised of a starburst aromatic amine compound represented by the formula ##STR1## wherein N is nitrogen; A.sup.1 to A.sup.3 each individually represent biaryl; R.sub.a, R.sub.b, and R.sub.c represent independently one of the functional groups of the following formulae ##STR2## wherein N is nitrogen; each Ar.sup.1 and Ar.sup.2 are aryl; R.sub.1 to R.sub.8 are substituents independently selected from the group consisting of hydrogen, halogen, hydrocarbon, and alkoxy; and X represents oxygen, sulfur, or an alkylene.

Abstract: An electroluminescent device comprised of a metal thioxinoid of the formula ##STR1## wherein M represents a metal; each n is a number of from 1 to 3; N is nitrogen, S is sulfur, and Z represents an aromatic moiety.

Abstract: An electroluminescent device comprised of a polynuclear arylamine as represented by the formula (I) wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are aryl groups, A.sup.1 and A.sup.2 are biaryl groups, and P is a hydrocarbon bridge.

Abstract: A novel series of azo polymers, copolymers and polymer blends for reversible optical storage devices are described. Various azobenzenes can be bound in the side chain or within the main chain of long chain polymers such as polyester, polystyrene and poly methacrylates with very short or no spacers to a form amorphous polymers which as a film or deposited on a transparent substrate can be used to record optical information using a linearly polarized laser beam which induces optical anisotropy in the film. The information can be erased thermally by heating above the glass transition temperature, or optically by overwriting with light polarized in a predefined zero direction or with circularly polarized light.