Organic compound, organic optoelectric diode, and display device

1. An organic optoelectronic device, comprising:

an anode and a cathode facing each other,

an emission layer between the anode and the cathode, and

an auxiliary layer between the emission layer and the anode,

wherein the auxiliary layer includes:

a first auxiliary layer that is adjacent to the anode, and

a second auxiliary layer that is adjacent to the emission layer,

wherein the second auxiliary layer includes an organic compound represented by Chemical Formula 1:

wherein, in Chemical Formula 1,

L 1 to L 3 are independently a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heterocyclic group, or a combination thereof,

R 1 to R 7 are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted C6 to C30 aryl group, a halogen, a cyano group, a hydroxyl group, an amino group, a nitro group, or a combination thereof,

R 4 to R 7 are independently present or adjacent two are linked to each other to provide a ring, and

at least one of R 2 and R 3 is a group represented by Chemical Formula 2,

wherein, in Chemical Formula 2,

X is O, S, SO 2 , or SiR c R d , and

adjacent two of R 8 to R 15 are linked to each other to provide a ring represented by one of Chemical Formulae 2-A to 2-C,

wherein, in Chemical Formulae 2-A to 2-C,

* is a linking point,

R 8 to R 15 not providing a ring, R 16 to R 23 , and R c to R d are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 arylamine group, a halogen, a cyano group, a hydroxyl group, an amino group, a nitro group, or a combination thereof, or are a linking point with L 2 or L 3 of Chemical Formula 1.

2. The organic optoelectronic device of claim 1 , wherein Chemical Formula 2 is one of substituted or unsubstituted groups listed in Group 1:

[Group 1]

wherein, in Group 1,

* is a linking point,

X is O, S, SO 2 , or SiR c R d , and

R c and R d are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted C6 to C30 aryl group, a halogen, a cyano group, a hydroxyl group, an amino group, a nitro group, or a combination thereof.

3. The organic optoelectronic device of claim 1 , wherein X is O or S.

4. The organic optoelectronic device of claim 1 , wherein R 2 is the group represented by Chemical Formula 2, and

R 1 and R 3 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted quarterphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthryl group, or a combination thereof.

5. The organic optoelectronic device of claim 1 , wherein L 1 to L 3 are independently a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group, or a combination thereof.

6. The organic optoelectronic device of claim 5 , wherein L 1 to L 3 are independently a single bond, a substituted or unsubstituted m-phenylene group, or a substituted or unsubstituted p-phenylene group.

7. The organic optoelectronic device of claim 1 , wherein the organic compound is one of compounds listed in Group 2:

[Group 2]

8. A display device comprising the organic optoelectronic device of claim 1 .

9. The organic optoelectronic device of claim 1 , wherein X is O, SO 2 , or SiR c R d .

10. The organic optoelectronic device of claim 1 , wherein the organic compound is neither of Compound A-32 or Compound A-56: