Provided are an organometallic compound represented by Formula 1, a light-emitting device including the organometallic compound, and an electronic apparatus and an electronic device that include the light-emitting device. In Formula 1, L.sub.1 may be a ligand represented by Formula 2, and Formulae 1 and 2 are described in more detail in the specification.

##STR00001##

The invention relates to an organic molecule, comprising or consisting of Formula A:

##STR00001## wherein M.sup.TADF represents a TADF moiety, M.sup.NRCT represents a near-range charge transfer (NRCT) emitter moiety, and L represents a divalent bridging unit that links M.sup.TADF and M.sup.NRCT and is linked to M.sup.TADF and to M.sup.NRCT via a single bond each. Furthermore, the present invention relates to the use of such organic molecule as a luminescent emitter in an optoelectronic device.

The invention provides organoboron precursors and facile photoirradiation and/or heating methods of making corresponding elimination products. Some elimination products are polycyclic aromatic molecules wherein a number of aromatic CC moieties have been replaced by a BN moiety to form azaborine compounds with interesting properties such as electronic, photophysical, luminescent, as well as chemical properties. Examples of polymer films that were doped with such compounds are shown wherein irradiated portions of the polymer film luminesce. The invention further provides methods of producing photoluminescence and electroluminescence, and uses of the compounds of the invention in luminescent probes, sensors, electroluminescent devices, hydrogen storage materials, optoelectronic materials, and bioactive molecules.

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.

##STR00001##

Provided is a color conversion composition showing excellent chromaticity durability, containing Component (A), Component (B), and Component (C), where Component (A) is a luminescent material, Component (B) is a binder resin, and Component (C) is a salt of an organic acid and at least one transition metal selected from the group consisting of Sc, V, Mn, Fe, Co, Cu, Y, Zr, Mo, Ag, and lanthanoids.

The present invention includes novel borazarophenanthrene compounds, which may be used as hosts for phosphorescent emitters, charge transporters or emitters in OLEDs.

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

Platinum, palladium, and gold complexes suitable for use as phosphorescent emitters or as delayed fluorescent and phosphorescent emitters having one of the following structures:

##STR00001## ##STR00002##

There is provided a compound having Formula I, Formula II, Formula III, Formula IV, Formula V, or Formula VI:

##STR00001## ##STR00002##

An organometallic compound represented by Formula 1:

M(L.sub.11).sub.n1(L.sub.12).sub.n2Formula 1 wherein, in Formula 1, M is a third row transition metal, L.sub.11 is a ligand represented by Formula 2, n1 is 1 or 2, and when n1 is two, two groups L.sub.11 are identical to or different from each other, L.sub.12 is an organic ligand, n2 is 0, 1, 2, or 3, and when n2 is two or more, two or more of groups L.sub.12 are identical to or different from each other:

##STR00001## wherein, in Formula 2, groups and variables are the same as described in the specification.