The present disclosure relates to organic electroluminescent compounds, and a host material, an electron buffer material, an electron transport material and an organic electroluminescent device comprising the same. By using the organic electroluminescent compounds of the present disclosure, the organic electroluminescent device secures fast electron current properties by intermolecular stacking and interaction, and thus, it is possible to provide the organic electroluminescent device having low driving voltage and/or excellent luminous efficiency and/or efficient lifespan properties.

There is provided herein a compound of formula I, wherein R.sup.1, R.sup.2, R.sup.3 Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4, R.sup.4, R.sup.5 and R.sup.6 are as defined herein, which compounds are useful in the treatment of autoimmune and/or fibrotic diseases, including interstitial lung diseases, such as idiopathic pulmonary fibrosis and sarcoidosis.

##STR00001##

There is provided herein a compound of formula I, wherein R.sup.1, R.sup.2, R.sup.3 Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4, R.sup.4, R.sup.5 and R.sup.6 are as defined herein, which compounds are useful in the treatment of autoimmune and/or fibrotic diseases, including interstitial lung diseases, such as idiopathic pulmonary fibrosis and sarcoidosis.

##STR00001##

Described herein are 1,2-dioxetanes that are useful as chemiluminescent probes, diagnostic agents, and imaging agents. Also described herein are compositions containing such compounds and methods of using the same.

Described herein are 1,2-dioxetanes that are useful as chemiluminescent probes, diagnostic agents, and imaging agents. Also described herein are compositions containing such compounds and methods of using the same.

Provided is a compound of Formula 1:

##STR00001## wherein: X and Y are independently O, S, or CZ1Z2; Ring A is a benzene or naphthalene ring; A1 to A4 are independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, or a substituted or unsubstituted: alkyl, cycloalkyl, aryl, or heterocyclic group; R1 to R6, Z1, and Z2 are independently a substituted or unsubstituted: alkyl, aryl, or heterocyclic group; n1 to n3, m, and l are 0 or 1 and n1+n2+n3 is ≥2; a1 and a2 are 1 to 4; a3 is 1 to 3; a4 is 1 to 6; and when a1 to a4 are each 2 or higher, structures in the parenthesis are the same or different, provided that when Ring A is naphthalene, m is 0, and when l is 1, Ring A is a benzene ring,
and an organic light-emitting device comprising the compound.

Provided is a compound of Formula 1:

##STR00001## wherein: X and Y are independently O, S, or CZ1Z2; Ring A is a benzene or naphthalene ring; A1 to A4 are independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, or a substituted or unsubstituted: alkyl, cycloalkyl, aryl, or heterocyclic group; R1 to R6, Z1, and Z2 are independently a substituted or unsubstituted: alkyl, aryl, or heterocyclic group; n1 to n3, m, and l are 0 or 1 and n1+n2+n3 is ≥2; a1 and a2 are 1 to 4; a3 is 1 to 3; a4 is 1 to 6; and when a1 to a4 are each 2 or higher, structures in the parenthesis are the same or different, provided that when Ring A is naphthalene, m is 0, and when l is 1, Ring A is a benzene ring,
and an organic light-emitting device comprising the compound.

A compound, a composition for an organic optoelectronic device, an organic optoelectronic device, and a display device, the compound being represented by Chemical Formula 1:

##STR00001##

A compound, a composition for an organic optoelectronic device, an organic optoelectronic device, and a display device, the compound being represented by Chemical Formula 1:

##STR00001##

A mixture of carbazole and triazine derivatives that can be thermally evaporated from one crucible to fabricate thin films for electroluminescent devices is disclosed.