Provided is an organic light emitting device comprising a light emitting layer comprising a compound of Chemical Formula 1 and a compound of Chemical Formula 2:
wherein:
Ar
1
, Ar
2
, Ar
4
and Ar
5
are each independently a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing N, O or S;
Ar
3
is hydrogen, or a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing N, O or S;
L
1
to L
3
are each independently a single bond or a substituted or unsubstituted C
6-60
arylene;
L
4
to L
6
are each independently a single bond or a substituted or unsubstituted C
6-60
arylene or C
2-60
heteroarylene containing N, O or S;
L
7
is a substituted or unsubstituted C
6-60
arylene;
R
1
is hydrogen, deuterium, or a substituted or unsubstituted C
6-60
aryl or C
2-60
heteroaryl containing one or of N, O and S;
a is 0 to 7.
Palladium-Catalyzed Annulation of 2,2′-Dibromobiphenyls with Alkynes: Synthesis of Functionalized Phenanthrenes and Dibenzochrysenes
作者:Gaoqiang Li、Feng Xu、Jun Ma、Yan Qiao、Jingxuan Tu、Sha Liu
DOI:10.1055/s-0034-1378726
日期:——
A palladium-catalyzed annulation process of 2,2′-dibromobiphenyls with alkynes for the synthesis of functionalized phenanthrenes has been realized. The methodology provides an efficient approach to dibenzochrysene derivatives starting from simple reactants in two steps.
report an efficient one‐step annulative π‐extension reaction of alkynes that provides access to diarylphenanthrenes and related nanographene precursors. In the presence of a cationic palladium/o‐chloranil catalyst system and dibenzosiloles or dibenzogermoles as π‐extending agents, a variety of diarylacetylenes are transformed successfully into 9,10‐diarylphenanthrenes in a single step with good functional‐group
A palladium-catalyzed decarbonylative annulation of 2-arylbenzoic acids with internal alkynes via C(sp2)–H activation has been developed. A series of phenanthrenes were produced in moderate to good yield with good functional group tolerance. The mechanism study indicated that the C(sp2)–H activation should be the rate-determining step during the reaction.
Provided is an organic light-emitting device including: a first electrode; a second electrode provided to face the first electrode; and a first organic material layer and a second organic material layer provided between the first electrode and the second electrode, in which the first organic material layer includes a compound of Formula 1:
wherein L1 to L3 are each independently a direct bond or a substituted or unsubstituted arylene group; and Ar1 to Ar3 are each independently a hydrogen, deuterium, or a substituted or unsubstituted aryl or heterocyclic group;
and the second organic material layer includes a compound represented by of Formula 2:
wherein L4 is a direct bond, or a substituted or unsubstituted arylene or divalent heterocyclic group; and Ar4 is a substituted or unsubstituted aryl, phosphine oxide or heterocyclic group.