Organic electroluminescent material and organic optoelectronic device

1. A compound of the following chemical formula (I):

wherein: in the chemical formula (I),

X 1 to X 2 are independently selected from O, S,

 and substituted or unsubstituted methylene, and a substituent is selected from hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl;

X 3 is selected from O, S, substituted or unsubstituted methylene, substituted or unsubstituted methylene, and substituted or unsubstituted silylene, and a substituent is selected hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl; and

R 1 to R 17 are independently selected from hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl.

2. The compound according to claim 1 has the following chemical structure (II):

3. The compound according to claim 1 , wherein:

X 3 is selected from

4. The compound according to claim 2 , wherein:

X 3 is selected from

5. The compound according to claim 1 , wherein:

X 1 is selected from

 and

X 2 is selected from O, S, and dimethyl-substituted methylene (—C(CH 3 ) 2 —).

6. The compound according to claim 2 , wherein:

X 1 is selected from

 and

X 2 is selected from O, S, and dimethyl-substituted methylene (—C(CH 3 ) 2 —).

7. The compound according to claim 1 , wherein:

C 6 to C 30 aryl is selected from phenyl and naphthyl.

8. The compound according to claim 2 , wherein:

C 6 to C 30 aryl is selected from phenyl and naphthyl.

9. The compound according to claim 1 , comprising a compound selected from the following:

10. The compound according to claim 1 , wherein:

an energy difference between a lowest singlet excited slate S 1 and a lowest triplet excited state T 1 of the organic electroluminescent compound is configured to be ΔEst, wherein ΔEst≦0.30 eV.

11. The compound according to claim 10 , wherein:

the energy difference between the lowest singlet excited state S 1 and the lowest triplet excited state T 1 of the organic electroluminescent compound is configured to be ΔEst, wherein ΔEst≦0.02 eV.

12. An organic optoelectronic device, comprising:

an anode;

a cathode; and

one or more organic thin film layers disposed between the anode and the cathode,

wherein at least one of the one or more organic thin film layers includes one or more organic electroluminescent compounds each having the following chemical formula (I):

wherein; in the chemical formula (I),

X 1 to X 2 are independently selected from O, S,

 and substituted or unsubstituted methylene, and a substituent is selected from hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl;

X 3 is selected from O, S, substituted or unsubstituted methylene, substituted or unsubstituted methylene, and substituted or unsubstituted silylene, and a substituent is selected hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl; and

R 1 to R 17 are independently selected from hydrogen, deuterium, C 1 to C 30 alkyl, C 1 to C 30 heteroatom-substituted alkyl, C 6 to C 30 aryl, and C 2 to C 30 heteroaryl.

13. The organic optoelectronic device according to claim 12 , wherein:

the one or more organic electroluminescent compounds are heat activated delayed fluorescence (TADF) materials.

14. The organic optoelectronic device according to claim 12 , wherein:

the at least one of the one or more organic thin film layers disposed between the anode and the cathode is a light-emitting layer, wherein the light-emitting layer includes the one or more organic electroluminescent compounds.

15. The organic optoelectronic device according to claim 14 , wherein:

the one or more organic electroluminescent compounds are used as a dopant material, a co-doping material, and a host material in the light-emitting layer.

16. The organic optoelectronic device according to claim 12 , wherein:

the one or more organic thin film layers further include at least one of a hole transport layer, a hole injection layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

17. The organic optoelectronic device according to claim 16 , wherein:

at least one of the hole transport layer, the hole injection layer, the electron blocking layer, the hole blocking layer, the electron transport layer, and the electron injection layer includes the one or more organic electroluminescent compounds.

18. The organic optoelectronic device according to claim 16 , wherein:

the one or more organic thin film layers further include the hole transport layer disposed between the light-emitting layer and the anode.

19. The organic optoelectronic device according to claim 16 , wherein:

the one or more organic thin film layers further include the hole transport layer and the electron transport layer,

wherein the hole transport layer is disposed between the light-emitting layer and the anode, and

the electron transport layer is disposed between the light-emitting layer and the cathode.

20. The organic optoelectronic device according to claim 16 , wherein:

the one or more organic thin film layers further include the hole transport layer, the electron transport layer, the electron injection layer, the hole injection layer, the electron blocking layer, and the hole blocking layer,

wherein the electron blocking layer, the hole transport layer and the hole injection layer are disposed between the light-emitting layer and the anode, and

the hole blocking layer, the electron transport layer and the electron injection layer are disposed between the light-emitting layer and the cathode.