Described herein are molecules for use in organic light emitting diodes. Example molecules comprise at least one moiety A and at least one moiety D. Values and preferred values of the moieties A and D are described herein. The molecules comprise at least one atom selected from Si, Se, Ge, Sn, P, or As.

A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.

The present invention generally relates to photon upconversion nanocapsules for 3D printing and other applications. For example, one aspect is generally related to nanocapsules that contain an upconversion material. Light, such as laser light, focused on a region of liquid containing nanocapsules may be upconverted by the upconversion material to produce wavelengths sufficient to cause polymerization of a polymerizable entity to occur. However, in contrast, although other regions may receive some light, that light may not be of sufficient focus or intensity to be upconverted, and thus, the polymerizable entity in those regions would generally not polymerize. In such a fashion, the extent of polymerization can be controlled, for example, by controlling where light is applied to the liquid. The light could be focused at arbitrary regions within the liquid, thus allowing true 3D-printing to occur. In addition, some embodiments of the invention generally relate to systems and methods for making or using such nanocapsules containing upconversion materials, products produced using such materials, kits including such materials, or the like.

A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.

A compound of Ir(L.sub.A).sub.m(L.sub.B).sub.3-m, having a structure of Formula I,

##STR00001##

is provided. In Formula I, moieties A and B are each either a monocyclic ring or a polycyclic fused ring system; X.sup.1 to X.sup.4 and Z.sup.1 to Z.sup.4 are C or N; Y is a single atom linker, which can be substituted; each R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is hydrogen or a General Substituent; m is 1 or 2; at least one of R.sup.1, R.sup.2, and R.sup.3 comprises at least one first electron-withdrawing group; and at least one of R.sup.4 and R.sup.5 comprises at least one second electron-withdrawing group. Formulations, OLEDs, and consumer products containing the compound are also provided.

An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an interlayer arranged between the first electrode and the second electrode, wherein the interlayer comprises an emission layer; a first compound represented by Formula 1; and a second compound represented by Formula 2:

##STR00001##

wherein ring CY.sub.11 to ring CY.sub.14, ring CY.sub.23, and ring CY.sub.24 are each independently a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group; E.sub.1 is a group represented by Formula 1A; k1 is an integer from 1 to 5; n11 is an integer from 1 to 3; n12 is an integer from 0 to 3; X.sub.21 is N or C(R.sub.21a), X.sub.22 is N or C(R.sub.22a), X.sub.23 is N or C(R.sub.23a), and at least one of X.sub.21 to X.sub.23 is N; and the remaining substituents are as defined herein.

Provided are a composition including a coloring agent having a structure represented by Formula (1), an organic solvent, and a curable compound, in which a solubility of the coloring agent having a structure represented by Formula (1) in propylene glycol methyl ether acetate at 25° C. is 100 mg/L or less; a compound having a structure represented by Formula (4-1); a film formed of the composition; a near-infrared cut filter; a pattern forming method; a laminate; a solid-state imaging element; an infrared sensor; an image display device; a camera module; and a novel compound.

(Dye).sub.n-L.sup.1  (1)

In Formula (1), L.sup.1 represents an n-valent linking group, n represents an integer of 2 to 10, where in a case where n is 2, L.sup.1 may be a single bond, and Dye's each independently represent a coloring agent structure having a maximal absorption wavelength in a wavelength range of 650 nm to 2,000 nm.

A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.

A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A novel light-emitting element is provided. A light-emitting element with a favorable lifetime is provided. A light-emitting element with favorable emission efficiency is provided. An organic compound having a substituted or unsubstituted benzonaphthofuran skeleton, a substituted or unsubstituted carbazole skeleton, and a substituted or unsubstituted amine skeleton is provided. Alternatively, a light-emitting element that uses the hole-transport material is provided.

An object of the present invention is to provide a resin composition which can be detected both by X-ray radiation and by fluorescence or phosphorescence, and a molded article obtained from the resin composition. The present invention provides a resin composition containing a light-emitting substance and a radiopaque substance; in which the light-emitting substance is a near-infrared fluorescent material or a phosphorescent material. a radiopaque substance of the resin composition is any one of barium sulfate, bismuth oxide, bismuth subcarbonate, calcium carbonate, aluminum hydroxide, tungsten, zinc oxide, zirconium oxide, zirconium, titanium, platinum, bismuth subnitrate, and bismuth. A molded article can be obtained by processing any one of the resin compositions described above.