An aromatic compound which improves emission efficiency and an organic electroluminescence device including the same are provided. The organic electroluminescence device includes: a first electrode; a second electrode opposite to the first electrode; and a plurality of organic layers between the first electrode and the second electrode, where at least one organic layer among the plurality of organic layers includes the aromatic compound. The aromatic compound is represented by Formula 1 below.

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Specific compounds, a material, preferably an emitter material, may be suitable for an organic electroluminescence device, and be of formula (I):

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An organic electroluminescence device may include such compounds. An electronic equipment may include such an organic electroluminescence device. A light emitting layer may include at least one host and at least one dopant, the dopant including at least one of such compounds. Such compounds may be used in an organic electroluminescence device.

The invention relates to an organic molecule, in particular for the application in optoelectronic devices. According to the invention, the organic molecule has a structure of formula I wherein R.sup.a is at each occurrence independently selected from the group consisting of: hydrogen, deuterium, N(R.sup.5).sub.2, OR.sup.5, Si(R.sup.5).sub.3, B(OR.sup.5).sub.2, B(R.sup.5).sub.2, OSO.sub.2R.sup.5, CF.sub.3, CN, F, Br, I, C.sub.1-C.sub.40-alkyl, C.sub.1-C.sub.40-alkoxy, C.sub.1-C.sub.40-thioalkoxy, C.sub.2-C.sub.40-alkenyl, C.sub.2-C.sub.40-alkynyl, C.sub.6-C.sub.60-aryl, and C.sub.2-C.sub.57-heteroaryl.

##STR00001##

An organic molecule for application in optoelectronic devices is disclosed. The organic molecule has a structure of Formula I, wherein R.sup.1 and R.sup.2 are independently from each other selected from the group consisting of: C.sub.1-C.sub.40-alkyl, which is optionally substituted with one or more substituents R.sup.5, and C.sub.6-C.sub.60-aryl, which is optionally substituted with one or more substituents R.sup.5; and R.sup.H is selected from the group consisting of H, D, F, Br, I, and C.sub.1-C.sub.4-alkyl.

##STR00001##

Described herein are devices, compositions, and methods for improving color discernment.

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1,2-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.

A compound having a structure of the formula Ir(L.sub.A)(L.sub.B), in which L.sub.A is a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and L.sub.B is a monodentate, bidentate, tridentate, or tetradentate ligand, or not present, and where the total denticity of L.sub.A plus L.sub.B is 6, and L.sub.A includes at least one structure of Formula I:

##STR00001##

is disclosed as a useful phosphorescent emitter compound.

A color conversion sheet converts incident light into light with a wavelength longer than that of the incident light. The color conversion sheet includes the following layer (A) and layer (B): the layer (A): a layer containing an organic light-emitting material (a) that exhibits light emission with a peak wavelength observed in a region of 500 nm or more and 580 nm or less by using excitation light in a wavelength range of 400 nm or more and 500 nm or less and a binder resin; and the layer (B): a layer containing an organic light-emitting material (b) that exhibits light emission with a peak wavelength observed in a region of 580 nm or more and 750 nm or less by being excited by either or both of excitation light in a wavelength range of 400 nm or more and 500 nm or less and light emission from the organic light-emitting material (a) and a binder resin.

The invention relates to the use of one or more compounds of the 4-bora-3a,4a-diaza-s-indacene family for the preparation of a security element for a product, in particular a document, said security element comprising a polymer and said compound(s) being incorporated in said polymer, and to a method for ensuring the security of a product, in particular that of a document.

Glucose-sensing luminescent dyes, polymers, and sensors are provided. Additionally, systems including the sensors and methods of using these sensors and systems are provided.