PYRROMETHENE BORON COMPLEX, LIGHT EMITTING ELEMENT USING SAME, DISPLAY DEVICE, LIGHTING DEVICE, COLOR CONVERSION COMPOSITION, COLOR CONVERSION FILM, COLOR CONVERSION SUBSTRATE, LIGHT SOURCE UNIT AND DISPLAY
申请人:Toray Industries, Inc.
公开号:US20210336145A1
公开(公告)日:2021-10-28
A pyrromethene-boron complex that can be used as a red light fluorescent material with improved emission efficiency and color purity is provided. A pyrromethene-boron complex represented by the following general formula (1) and satisfying at least one of (A) and (B) is provided:
wherein, in the formula, X and R
1
to R
9
are selected from predetermined groups, at least one of four pairs of R
1
and R
2
, R
2
and R
3
, R
4
and R
5
, and R
5
and R
6
has a ring structure represented by any one of the following general formulas (2A) to (2D):
wherein, in the formulas, R
101
, R
102
and R
201
to R
204
have the same meaning as R
1
to R
7
in the general formula (
1
), Ar is a substituted or unsubstituted aromatic hydrocarbon ring, or a substituted or unsubstituted aromatic heterocycle, R
101
and R
102
may form a ring, and * indicates a connection with the pyrromethene skeleton.