- Benzofuroacridine and benzothienoacridine as new donor moieties for emission color management of thermally activated delayed fluorescent emitters
-
A benzofuran and acridine merged moiety, 5,5-dimethyl-5,13-dihydrobenzofuro[3,2-c]acridine (BFAc), and a benzothiophene and acridine combined moiety, 5,5-dimethyl-5,13-dihydrobenzothieno[3,2-c]acridine (BTAc), were developed as strong donor moieties of th
- Kang, Yu Jin,Yun, Ju Hui,Han, Si Hyun,Lee, Jun Yeob
-
p. 4573 - 4580
(2019/04/25)
-
- Anthracene derivatives and organic electroluminescent device comprising the same
-
The present invention relates to anthracene derivatives which are represented by chemical formula 1 and have high brightness and improved lifespan properties by being included in a light emitting layer, and to an organic electroluminescent device comprising the same.COPYRIGHT KIPO 2017
- -
-
Paragraph 0079-0085
(2017/10/21)
-
- Synthesis of N -Aryl and N -Heteroaryl γ-, δ-, and ?-Lactams Using Deprotometalation-Iodination and N -Arylation, and Properties Thereof
-
Xanthone, thioxanthone, fluorenone, benzophenone, 2-benzoylpyridine, dibenzofuran, and dibenzothiophene were deprotonated using a base prepared in situ from MCl 2 ·TMEDA (M = Zn or Cd; TMEDA = N, N, N ′, N ′-tetramethylethylenediamine) and lithium 2,2,6,6-tetramethylpiperidide in a 1:3 ratio, as demonstrated by subsequent iodolysis. The different aryl halides were involved as partners in the N -arylation of pyrrolidin-2-one. In the presence of copper(I) iodide and tripotassium phosphate, and using dimethyl sulfoxide as solvent, the reactions could be performed in yields ranging from 40 to 70%. Most of the products were tested for their antimicrobial, antifungal, antioxidant, and cytotoxic (MCF-7) activity.
- Amara, Rim,Bentabed-Ababsa, Ghenia,Hedidi, Madani,Khoury, Joseph,Awad, Ha?an,Nassar, Ekhlass,Roisnel, Thierry,Dorcet, Vincent,Chevallier, Floris,Fajloun, Ziad,Mongin, Florence
-
p. 4500 - 4516
(2017/09/26)
-
- Novel heterocyclic compounds and organic light-emitting diode including the same
-
The present invention relates to a heterocyclic compound represented by chemical formula A, and an organic light-emitting device containing the same. The ring A, R11-R14, W, X, Y, and Z are the same as defined in the present specification. According to the present invention, the heterocyclic compound exhibits long lifespan and low voltage driving properties when used as a material for phosphorescent hosts.COPYRIGHT KIPO 2017
- -
-
Paragraph 0337-0342
(2017/08/29)
-
- DIBENZOFURAN AND DIBENZOTHIOPHENE DERIVATIVES AND ORGANIC LIGHT-EMITTING DEVICES CONTAINING THEM
-
A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; R1 is a substituent; n is 0 or a positive integer; Ar1 independently in each occurrence is an arylene group; R2 is a substituent; R3 is a substituent; R4 is an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.
- -
-
Page/Page column 30; 31
(2017/09/27)
-
- COMPOUND AND ORGANIC ELECTROLUMINESCENT ELEMENT
-
PROBLEM TO BE SOLVED: To provide a novel compound that is high in band gap and T1 energy, has excellent electrical stability/thermal stability, and can be used also for a hole transport layer of an organic EL element, and to provide an organic EL element that comprises a hole transport layer comprising the compound, and has a longer life and high luminous efficiency. SOLUTION: The present invention provides a compound represented by formula (1) [where X1 to X4 each independently represent H, or a specific dibenzofuran; at least one of X1 to X4 is a specific dibenzofuran; R1 to R6 each independently represent H, a substituted/unsubstituted alkyl group or halogen group; Y is a substituted/unsubstituted an aromatic cyclic group]. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
- -
-
Paragraph 0137-0139
(2017/05/26)
-
- An electroluminescent compound and an electroluminescent device comprising the same
-
The present invention relates to organic light emitting compounds represented by chemical formula 1-1 to chemical formula 1-2. An organic electroluminescent device using the same has excellent light emitting efficiency and can be driven at low voltage, thereby having improved power efficiency and long life characteristics.COPYRIGHT KIPO 2015
- -
-
Paragraph 0415-0421; 0635-0641
(2020/09/12)
-
- An electroluminescent compound and an electroluminescent device comprising the same
-
The present invention relates to an organic light emitting compound represented by chemical formula 1, and an organic electroluminescent device comprising the same. The organic light emitting compound according to the present invention increases PL quantu
- -
-
Paragraph 0321-0325
(2016/10/08)
-
- Novel aromatic amine compounds for organic light-emitting diode and organic light-emitting diode including the same
-
The present invention relates to an organic light emitting compound represented by the chemical formula A or the chemical formula B and an organic light emitting diode comprising the same, wherein A1 to A3, X, Y, and Z are the same as defined in the specification.COPYRIGHT KIPO 2016
- -
-
Paragraph 0393-0398
(2016/10/10)
-
- HOLE TRANSPORT MATERIAL
-
PROBLEM TO BE SOLVED: To provide a compound large in band gap, excellent in electrical stability and thermal stability and capable of being used for a hole transport material of an organic EL element, and an organic EL element having long life and high luminous efficacy and having a hole transport material containing the compound. SOLUTION: There is provided a compound represented by the formula (1). In the formula (1), R1 to R4 are each independently H, a substituted or unsubstituted alkyl group or a halogen group, R1 to R4 may exist each independently single or plurality, and may be same or different when exist plurality, X1 and X2 are each independently substituted or unsubstituted aromatic cyclic group, Z1 and Z2 are each O or S, and n is an integer of 1 to 8. COPYRIGHT: (C)2016,JPOandINPIT
- -
-
Paragraph 0126-0127
(2018/10/03)
-
- Novel heteroleptic iridium complexes
-
Novel phosphorescent heteroleptic iridium complexes with phenylpyridine and dibenzo-containing ligands are provided. The disclosed compounds have low sublimation temperatures that allow for ease of purification and fabrication into a variety of OLED devices.
- -
-
Paragraph 0105
(2013/06/05)
-
- General copper-catalyzed transformations of functional groups from arylboronic acids in water
-
A simple and general copper-catalyzed method has been developed for transformations of various functional groups (i I, i N3, i SO2R, i OH, i NH2, and i NO 2) on aromatic rings from arylboronic acids in water under air. The protocol uses cheap and readily available inorganic salts (KI, NaN3, NaSO2R, NaOH, NaNO2) and aqueous ammonia as the functional-group sources, simple Cu2O/NH3 as the catalyst system, environmentally friendly water as the solvent, and oxygen in air as the oxidant. Importantly, the copper catalyst system in water was recyclable. This study should provide a useful strategy for interconversions of the functional groups on aromatic rings.
- Yang, Haijun,Li, Yong,Jiang, Min,Wang, Junmei,Fu, Hua
-
experimental part
p. 5652 - 5660
(2011/06/23)
-
- Regioselective haloaromatization of 1,2-bis(ethynyl)benzene via halogen acids and PtCl2. Platinum-catalyzed 6-π electrocyclization of 1,2-bis(1′-haloethenyl)benzene intermediates
-
Treatment of 1,2-bis(ethynyl)benzene (1) with aqueous HX (X = Br, I) in hot 3-pentanone (100-105 °C, 2 h) afforded 1,2-bis(1′-haloethenyl)benzene species 2-Br and 2-I in 98% and 95% yields, respectively. The hydrochlorination of endiyne 1 failed to proceed at elevated temperature but was implemented efficiently by PtCl2 (5 mol %) in hot 3-pentanone (100 °C, 2 h) to give 1,2-bis(1′-chloroetheny)benzene 2-Cl in 80% yield. In the presence of PtCl2 (5 mol %), these halides 2-Cl, 2-Br, and 2-I were subsequently converted to 1-halonaphthalenes 3-Cl, 3-Br, and 3-I in the mother solution via sequential 6-π electrocyclization and dehalogenation reactions. PtCl2 (5 mol %) also effected direct haloaromatization of endiyne 1 with HX (X = Cl, Br, I) and gave 1-halonaphthalenes 3-Cl, 3-Br, and 3-I in 64-71% yields. This investigation reports the scope and the regioselectivity of haloaromatization of various enediynes catalyzed by PtCl2.
- Lo, Ching-Yu,Kumar, Manyam Praveen,Chang, Hsu-Kai,Lush, Shie-Fu,Liu, Rai-Shung
-
p. 10482 - 10487
(2007/10/03)
-
