860435-39-8Relevant academic research and scientific papers
POLYCYCLIC AROMATIC DERIVATIVE COMPOUNDS AND ORGANIC LIGHT-EMITTING ELEMENTS USING THE SAME
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Paragraph 0204; 0210-0212, (2020/06/30)
PROBLEM TO BE SOLVED: To provide: organic light-emitting compounds used in organic layers of organic light-emitting elements and capable of realizing efficient and long-lasting organic light-emitting elements; and organic light-emitting elements comprising the same. SOLUTION: An organic light-emitting compound is such that Q1 to Q3 are linked by linkers Y and X at specific positions, where Q1 to Q3 are identical to or different from each other and each independently a substituted or unsubstituted C6-50 aromatic hydrocarbon ring or a substituted or unsubstituted C2-50 heteroaromatic ring; each of the linkers Y is one selected from among N-R1, CR2R3, O, S, Se and SiR4R5; the multiple linkers Y are identical to or different from each other; and X is one selected from among B, P and P=O. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT
POLYCYCLIC AROMATIC COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICES USING THE SAME
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Paragraph 0123-0124, (2020/06/29)
Disclosed are polycyclic aromatic compounds that can be employed in various organic layers of organic electroluminescent devices. Also disclosed are organic electroluminescent devices including the polycyclic aromatic compounds. The organic electroluminescent devices are highly efficient and long lasting and have greatly improved luminous efficiency.
ORGANIC ELECTROLUMINESCENT DEVICE
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Paragraph 0128-0129, (2020/12/30)
Disclosed is an organic electroluminescent device that employs a compound represented by Formula A-1 or A-2: and a compound represented by Formula B: The organic electroluminescent device has excellent luminescent properties such as high color purity and long lifetime.
A facile synthesis of indolo[3,2,1-jk]carbazoles via palladium-catalyzed intramolecular cyclization
Lv, Jun,Liu, Qiancai,Tang, Jie,Perdih, Franc,Kranjc, Kristof
supporting information, p. 5248 - 5252 (2012/10/30)
A new efficient synthesis of indolo[3,2,1-jk]carbazoles by the palladium-catalyzed cyclization of N-(2-bromoaryl)carbazoles is described. The reaction involves intramolecular C-C bond formation, coupled with the cleavage of a C-X bond and a C-H bond on carbazole ring. Substitutions on N-aryl core with either electron-donating or electron-withdrawing groups are introduced, and different reaction factors for cyclization are evaluated.
Highly fluorescent solid-state asymmetric spirosilabifluorene derivatives
Lee, Sang Ho,Jang, Bo-Bin,Kafafi, Zakya H.
, p. 9071 - 9078 (2007/10/03)
A series of four asymmetrically aryl-substituted 9,9′-spiro-9- silabifluorene (SSF) derivatives, 2,2′-di-tert-butyl-7,7′-diphenyl- 9,9′-spiro-9-silabifluorene (PhSSF), 2,2′-di-tert-butyl-7,7′- dipyridin-2-yl-9,9′-spiro-9-silabifluorene (PySSF), 2,2′-di-tert- butyl-7,7′-dibiphenyl-4-yl-9,9′-spiro-9-silabifluorene (BPhSSF), and 2,2′-di-tert-butyl-7,7′-bis(2′,2″-bipyridin-6-yl)-9, 9′-spiro-9-silabifluorene (BPySSF) are prepared through the cyclization of the corresponding 2,2′-dilithiobiphenyls with silicon tetrachloride. These novel spiro-linked silacyclopentadienes (siloles) form transparent and stable amorphous films with relatively high glass transition temperatures (Tg = 203-228°C). The absorbance spectrum of each compound shows a significant bathochromic shift relative to that of the corresponding carbon analogue as a result of the effective σ*-π* conjugation between the σ* orbital of the exocyclic Si-C bond and the π* orbital of the oligoarylene fragment. Solid-state films exhibit intense violet-blue emission (λPL = 398-415 nm) with high absolute photoluminescence quantum yields (ΦPL = 30-55%).
