Benzothiophene derivative and organic electroluminescence device making use of the same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMitsunori Ito, Mineyuki Kubota, Chishio Hosokawa
Life of this patent
Estimating the term…
Abstract
A benzothiophene derivative that having novel structure and an electroluminescence device which comprises a cathode, an anode and an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises the benzothiophene derivative described in claim 1 singly or as a component of a mixture. An electroluminescence device emitting blue light, exhibiting a great efficiency of light emission and having a long life can be obtained by using the derivative.
Claims10
A benzothiophene derivative represented by following general formula (1):
- (A)h-(X)k—(B)m-L-(C)n—(Y)p-(D)q (1)
- wherein
- X represents a substituted or unsubstituted pyrene residue group;
- A and D each independently represent hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 1 to 50 ring carbon atoms, a substituted or unsubstituted alkyl or alkylene group having 1 to 50 carbon atoms or a substituted or unsubstituted alkenyl or alkenylene group having 1 to 50 carbon atoms;
- B and C each independently represent a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 1 to 50 ring carbon atoms, a substituted or unsubstituted alkyl or alkylene group having 1 to 50 carbon atoms or a substituted or unsubstituted alkenyl or alkenylene group having 1 to 50 carbon atoms;
- Y represents a substituted or unsubstituted condensed cyclic group and/or condensed heterocyclic group having 5 to 50 ring carbon atoms;
- L represents a substituted or unsubstituted benzothiophenylene group;
- k represents an integer of 1 to 3;
- h and q each represent an integer of 0 to 4;
- m and n each represent an integer of 0 to 5;
- and
- p represents an integer of 0 to 3.
Dependencies are inferred from the claim text.