Polyvinyl pyrrole host material, luminescent layer comprising the same, and organic electroluminescent device comprising the luminescent layer
AssigneeSamsung Mobile Display Co., Ltd.
InventorsJong-Jin Park, Byoung-Ki Choi, Tae-Yong Noh, O-Hyun Kwon, Myeong-Suk Kim, Yu-Jin Kim, Sang-Heon Hyun
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Abstract
Provided are a polyvinyl pyrrole host material emitting highly efficient phosphorescence, a luminescent layer using the material, and an organic electroluminescent display device. The polyvinyl pyrrole host material shows highly efficient luminescence having improved energy transfer, and thus is useful for an organic electroluminescent display device and other various light emitting devices.
Claims20
A polyvinyl pyrrole host material represented by Formula 1:
- where R1, R2, R3, and R4 are each independently a hydrogen, a halogen atom, a carboxyl group, an amino group, a nitro group, a cyano group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C7-C30 arylalkyl group, a substituted or unsubstituted C5-C30 heteroaryl group, or a substituted or unsubstituted C3-C30 heteroarylalkyl group, and two of these can be fused to form a fusion ring of 5 to 7 circles, and n is an integer from 10 to 10,000.
A luminescent layer for a light emitting device, the luminescent layer comprising:
- a dopant;
- and
- a host material doped with the dopant, the host material represented by Formula 1:
- where R1, R2, R3, and R4 are each independently a hydrogen, a halogen atom, a carboxyl group, an amino group, a nitro group, a cyano group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C7-C30 arylalkyl group, a substituted or unsubstituted C5-C30 heteroaryl group, or a substituted or unsubstituted C3-C30 heteroarylalkyl group, and two of these can be fused to form a fusion ring of 5 to 7 circles, and n is an integer from 10 to 10,000.
An organic electroluminescence device, comprising:
- a first electrode;
- a second electrode;
- and
- a luminescent layer interposed between the first electrode and the second electrode, the luminescent layer comprising:
- a dopant;
- and
- a host material doped with the dopant, the host material represented by Formula 1:
- where R1, R2, R3, and R4 are each independently a hydrogen, a halogen atom, a carboxyl group, an amino group, a nitro group, a cyano group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C20 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C7-C30 arylalkyl group, a substituted or unsubstituted C5-C30 heteroaryl group, or a substituted or unsubstituted C3-C30 heteroarylalkyl group, and two of these can be fused to form a fusion ring of 5 to 7 circles, and n is an integer from 10 to 10,000.
Dependencies are inferred from the claim text.