ORGANIC COMPOUNDS ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTID DEVICE HAVING THE COMPOUNDS

The present invention relates to an organic compound in which an imidazole or thiazole moiety serving as an electron acceptor is connected via an aromatic linker to an indenofluorene-substituted triarylamine moiety serving as an electron donor. The organic compound, since it contains both electron d...

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Bibliographic Details
Main Authors SHIN IN AE, KIM JUN YUN, BAE SUK YOUNG
Format Patent
LanguageEnglish
Korean
Published 05.06.2019
Subjects
ADHESIVES
CHEMISTRY
DYES
ELECTRICITY
HETEROCYCLIC COMPOUNDS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC CHEMISTRY
PAINTS
POLISHES
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Summary:The present invention relates to an organic compound in which an imidazole or thiazole moiety serving as an electron acceptor is connected via an aromatic linker to an indenofluorene-substituted triarylamine moiety serving as an electron donor. The organic compound, since it contains both electron donor and electron acceptor moieties in a single molecule, allows electric charges to move easily, thereby increasing luminance efficiency. Also, since a nitrogen atom that is a part of the electron donor is connected to an indenofluorene ring, which is a condensed aromatic ring with a solid structure, the 3D structure of the molecule is limited. Thus, the organic compound of the present invention may be used as a delayed fluorescence dopant emitting a blue light of high chromatic purity. The organic compound of the present invention may be applied to organic light-emitting devices, such as an organic light-emitting diode, a display device, and a lighting device, to lower the driving voltage thereof while increasing luminance efficiency and chromatic purity thereof. 본 발명은 전자주개(electron donor)로 기능하는 인데노플루오렌(indenofluorene)으로 치환된 트리 아릴 아민 모이어티에 전자받개(electron acceptor)로 기능하는 이미다졸(imidazole) 또는 티아졸(thiazole) 모이어티가 방향족 연결기(linker)를 통하여 연결된 유기 화합물에 관한 것이다. 하나의 분자 내에 전자주개와 전자받개 모이어티를 모두 포함하고 있어, 분자 내에서 전하가 쉽게 이동하여 발광 효율이 향상될 수 있다. 또한, 전자주개의 일부분인 질소 원자는 견고한 구조를 가지는 축합 방향족 고리인 인데노플루오렌 고리와 연결되어 있기 때문에, 분자의 3차원 입체구조가 제한된다. 따라서 본 발명의 유기 화합물은 고색순도의 청색을 발광하는 지연 형광 도펀트로 사용될 수 있다. 본 발명의 유기 화합물을 적용하여 구동 전압이 낮으면서, 발광 효율 및 색 순도가 우수한 유기발광다이오드, 표시장치 및 조명 장치와 같은 유기발광장치에 활용될 수 있다.
Bibliography:Application Number: KR20170160427