502161-03-7Relevant articles and documents
Heterocyclic compound and organic light emitting device comprising same
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Paragraph 0224-0225; 0228; 0238-0239, (2020/10/20)
A heterocyclic compound is represented by Formula 1 below. An organic light-emitting device includes a first electrode, a second electrode and an organic layer between the first electrode and the second electrode. The organic layer includes the heterocyclic compound. Organic light emitting devices including the heterocyclic compound of Formula 1 exhibit high efficiency, low voltages, high brightness, and long lifespans.
Synthesis and photophysical properties of fluorescent dyes based on triphenylamine, diphenylamine, diphenyl sulfone or triphenyltriazine derivatives containing an acetylene linkage group
Ahn, Sung-Ok,Choi, Jae-Hong,Kim, Kyung-Won,Kwon, Su-Hyeon,Lee, Byung-Jun,Lee, Ju-Hong
, (2020/06/22)
In this study, ten fluorescent dyes were prepared based on three different kinds of central moiety, such as triphenylamine, diphenylsulfone or triphenyltriazine, which was coupled to either carbazole or naphthalimidinyl group via an acetylene linkage group. N-n-Butyl-carbazole, N-phenyl-carbazole or N-n-butyl-naphthalimide was coupled to the individual central moiety of triphenylamine, diphenyl sulfone, 2,4,6-triphenyl-1,3,5-trazine or diphenylamine using a Sonogashira coupling reaction in the final step. All dyes were confirmed their chemical structure by 1H NMR, GC-Mass and elemental analyses. The absorption properties and thermal stabilities of the fluorescent dyes were examined. Density Functional Theory (DFT) and Time-Dependent DFT calculations were carried out, in addition to geometry simulation, by using the Gaussian 09 program. In terms of fluorescence properties in this series, two dyes based on diphenyl sulfonyl and three dyes based on triphenylamine substituted by 1–3 of N-n-butyl-carbazole exhibited a blue emission, whereas three dyes based on triphenylamine substituted by 1–3 of N-n-butyl-naphthalimide were observed by a red emitter which can be attributable to both effects the bathochromic shifts in absorption maxima and larger Stokes shifts. In case of corresponding 2,4,6-triphenyl-1,3,5-trazine central moiety coupled to a carbazole ring, a green fluorescence was emitted. Results revealed that the fluorescence of the dyes is affected by the electron-donating strength of the acetylene linkages involved in the π-conjugation systems of the dyes.
A process of preparing fluorene-carbazole compoound for hole transfer layer of organic electronic device
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, (2017/01/05)
The present invention relates to a preparation method of a fluorene-carbazole compound for hole transfer layer. In the case of manufacturing a novel compound having high thermal stability for hole injection layer or hole transfer layer according to the present invention, formation of powder during sublimation and purification is easy, and a novel material for a hole injection layer or a hole transfer layer, which can overcome a problem of mask clogging caused by flocculation, can be produced at reduced costs with high yield. In the present invention, the preparation method of a fluorene-carbazole compound comprises a step of making a reaction between a compound represented by chemical formula 2 and a compound represented by chemical formula 3. The fluorene-carbazole compound of the present invention is represented by chemical formula 1.COPYRIGHT KIPO 2016