A compound of formula (I): wherein R
1
in each occurrence is independently H or a substituent; R
2
in each occurrence is independently a substituent; p in each occurrence is 0, 1, 2, 3 or 4 and Y is a ligand, with the proviso that at least one R
1
is a substituent or at least one p is at least 1.
COMPOUND, COMPOSITION AND ORGANIC LIGHT-EMITTING DEVICE
申请人:Cambridge Display Technology Limited
公开号:US20170005277A1
公开(公告)日:2017-01-05
A compound of formula (I)
wherein X is O or S; each A is a LUMO-deepening substituent; R
5
and R
6
are independently in each occurrence a substituent; x independently in each occurrence is 0, 1, 2, 3 or 4; y independently in each occurrence is 0, 1 or 2, and each z is independently 0 or 1 with the proviso that at least one z is 1. The compound may be used as a host for a phosphorescent light-emitting material in an organic light-emitting device.
CONJUGATED POLYMERS CONTAINING SPIROBIFLUORENE UNITS AND THE USE THEREOF
申请人:Becker Heinrich
公开号:US20070265473A1
公开(公告)日:2007-11-15
The present invention relates to novel conjugated polymers comprising spirobifluorene units and their use in optoelectronic devices, preferably in, for example, displays based on polymeric organic light-emitting diodes.
A polymer comprising a repeat unit of formula (I): wherein R
1
in each occurrence is independently H or a substituent, and the two groups R
1
may be linked to form a ring; R
2
in each occurrence is independently a substituent; Ar
1
in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents; R
3
in each occurrence is independently a substituent; each n independently is 0, 1, 2 or 3 with the proviso that at least one n=1; and each m is independently 0 or 1. The polymer may be a light-emitting
103
of an organic light-emitting device.