JP2018035124A5 - - Google Patents

Claims (10)

The compound which has a structure represented by the following general formula ( 2 ).

[In General Formula (2), A ¹ represents a substituted or unsubstituted diarylboryl group. At least one of R ^{1 to} R ⁵ independently represents a substituted or unsubstituted diarylboryl group, and at least two of R ^{1 to} R ⁵ each independently represents a structure represented by the following general formula (11). The Hammett's σp represents a negative substituent, and the remaining R ^{1 to} R ⁵ each independently represent a hydrogen atom or a Hammett's σp is a substituent of 0 or more. However, among R ^{1 to} R ⁵ , Hammett having a structure represented by the following general formula (11) having a negative σp is a combination of R ¹ and R ⁴ , R ² and R ^3. Or a combination of R ³ and R ⁴ . ]

[In General Formula (11), R ^{21 to} R ²⁸ each independently represents a hydrogen atom or a substituent. ] 2. The compound according to claim 1 , wherein all substituents having a positive Hammett σp existing in the molecule of the compound represented by the general formula ( 2 ) are substituted or unsubstituted diarylboryl groups. . The compound according to claim 1 or 2 , wherein R ¹ or R ^{3 in} the general formula (2) is a substituted or unsubstituted diarylboryl group. Among R ^{1 to} R ^{5 in} the general formula (2), Hammett having a structure represented by the general formula (11) is a combination of R ¹ and R ⁴ in which σp is a negative substituent. The compound according to any one of claims 1 to 3 , wherein: The compound according to any one of claims 1 to 4 , wherein the substituted or unsubstituted diarylboryl group has a structure represented by the following general formula (10).

[In General formula (10), R < ¹¹ > -R < ²⁰ > represents a hydrogen atom or a substituent each independently. R ¹¹ and R ¹² , R ¹² and R ¹³ , R ¹³ and R ¹⁴ , R ¹⁴ and R ¹⁵ , R ¹⁵ and R ¹⁶ , R ¹⁶ and R ¹⁷ , R ¹⁷ and R ¹⁸ , R ¹⁸ and R ¹⁹ , R ¹⁹ And R ²⁰ may be bonded to each other to form a cyclic structure. ] The compound according to claim 5 , wherein at least one of R ^{11 to} R ¹⁵ and at least one of R ^{16 to} R ^{20 in} the general formula (10) is an alkyl group. 7. The compound according to claim 5, wherein R ¹¹ , R ¹³ , R ¹⁵ , R ¹⁶ , R ¹⁸ , and R ^{20 in the} general formula (10) are alkyl groups. The luminescent material containing the compound of any one of Claims 1-7 . The organic light emitting element characterized by including the compound of any one of Claims 1-7 . The organic light-emitting device according to claim 9 , which emits delayed fluorescence.