Tri-, Tetra- and Pentamers of 9,9′-Spirobifluorenes through Fullortho-Linkage: High Triplet-Energy Pure Hydrocarbon Host for Blue Phosphorescent Emitter
摘要:
4,4'-Dibromo-9,9'-spirobifluorene was first synthesized, and from this intermediate, three fully ortho-linked tri-, tetra-, and pentamers of 9,9'-spirobifluorenes were constructed. The full ortho-linkage impedes the pi conjugation of fluorene units, and guarantees their high triplet energies (Er = 2.80 eV). A device with the trimer as the first pure hydrocarbon host material for blue phosphor Flrpic shows a maximum current efficiency of 25 cd/A.
[EN] MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES<br/>[FR] MATIÈRES POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES
申请人:MERCK PATENT GMBH
公开号:WO2016078738A1
公开(公告)日:2016-05-26
The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.
[EN] MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES<br/>[FR] MATÉRIAUX POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES
申请人:MERCK PATENT GMBH
公开号:WO2017016632A1
公开(公告)日:2017-02-02
The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.
CONDENSED CYCLIC COMPOUND, COMPOSITION INCLUDING THE SAME, AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE CONDENSED CYCLIC COMPOUND
申请人:Samsung Electronics Co., Ltd.
公开号:US20190221746A1
公开(公告)日:2019-07-18
A condensed cyclic compound represented by Formula 1:
wherein, in Formula 1, X
11
, X
12
, and R
11
to R
24
are the same as described in the specification.