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.

An organic electroluminescence device including: a cathode; an anode; and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and the first host material and the second host material are different compounds.

##STR00001##

An organic compound is disclosed comprising: a first chemical moiety with a structure of formula I

##STR00001##

and two second chemical moieties, independently from another with a structure of formula II,

##STR00002##

wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

An organic compound is disclosed comprising: a first chemical moiety with a structure of formula I

##STR00001##

and two second chemical moieties, independently from another with a structure of formula II,

##STR00002##

wherein the first chemical moiety is linked to each of the two second chemical moieties via a single bond.

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer. L.sub.101 is a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms. Ar.sub.101 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. mx is 0, 1, 2, 3, 4, or 5.

##STR00001##

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer. L.sub.101 is a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms. Ar.sub.101 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. mx is 0, 1, 2, 3, 4, or 5.

##STR00001##

An organic electroluminescence device includes: an anode; a cathode; a first emitting layer; and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains, as a first host material, a first compound that has at least one group represented by a formula (11) below and that is represented by a formula (1) below, the second emitting layer contains, as a second host material, a second compound represented by one of formulae (2-1A) to (2-4A) below, and the first emitting layer and the second emitting layer are in direct contact with each other.

##STR00001## ##STR00002##

An organic electroluminescence device includes: an anode; a cathode; a first emitting layer; and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains, as a first host material, a first compound that has at least one group represented by a formula (11) below and that is represented by a formula (1) below, the second emitting layer contains, as a second host material, a second compound represented by one of formulae (2-1A) to (2-4A) below, and the first emitting layer and the second emitting layer are in direct contact with each other.

##STR00001## ##STR00002##

A composition contains an organic compound and an anthracene compound different from the organic compound, the anthracene compound having a hydrogen atom at at least one of positions 9 and 10, in which the concentration of the anthracene compound is 100 ppm or less. Additionally, a long-lived organic light-emitting device includes an organic compound layer containing a reduced concentration of the anthracene compound.