- Novel organic compounds for organic light-emitting diode and organic light-emitting diode including the same
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The present invention relates to an organic light emitting compound represented by formula A and an organic light emitting diode including the same. Substituents A1 to A4, R1 to R17, X, Y, a, b, m, n, p, L1, and L2 are identical to as defined in the detailed description.
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- Deuterated organic compounds for organic light-emitting diode and organic light-emitting diode including the same
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The present invention relates to an organic electroluminescent compound represented by chemical formula A and an organic light emitting device comprising the same. Substituents Y, Ar2 , L3 , K, p and x are as defined in the description of the invention. [Chemical A] (by machine translation)
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- An electroluminescent compound and an electroluminescent device comprising the same
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The present invention relates to an organic luminescent compound represented by chemical formula 1 and an organic electroluminescent device including the same. The organic luminescent compound according to the present invention has excellent luminous efficiency and lifetime properties of material, and thus, enables the manufacturing of an organic electroluminescent device having excellent luminous efficiency while having power efficiency and long lifetime properties. [Chemical formula 1].
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- New reductive rearrangement of: N-arylindoles triggered by the grubbs-stoltz reagent et3sih/kotbu
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N-Arylindoles are transformed into dihydroacridines in a new type of rearrangement, through heating with triethylsilane and potassium tert-butoxide. Studies indicate that the pathway involves (i) the formation of indole radical anions followed by fragmentation of the indole C2-N bond, and (ii) a ring-closing reaction that follows a potassium-ion dependent hydrogen atom transfer step. Unexpected behaviors of 'radical-trap' substrates prove very helpful in framing the proposed mechanism.
- Allison, Mark,Arokianathar, Jude N.,Dimitrova, Daniela,Kolodziejczak, Krystian,Leach, Stuart G.,Murphy, John A.,Parkinson, John A.,Poole, Darren L.,Smith, Andrew J.,Tuttle, Tell,Young, Allan
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p. 3719 - 3726
(2020/04/20)
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- Carbazole derivatives and organoelectro luminescent device using the same
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PURPOSE: A carbazole derivative is provided to drive an organic electroluminescent device at low voltage and to improve brightness when the derivative is used in an organic layer of the organic electroluminescent device, thereby improving economic efficiency. CONSTITUTION: A carbazole derivative is denoted by chemical formula 1. An organic electroluminescent device comprises a first electrode, a second electrode, and one or more organic layers between the first and second electrodes. The organic layers contain the carbazole derivative of chemical formula 1. The organic layers are selected among a hole injection layer, a hole transport layer, a functional layer with hole injecting and transporting functions, a light emitting layer, an electrode transport layer, and an electron injection layer. The light emitting layer contains one or more host compounds and one or more dopant compounds. The host compound is a carbazole derivative of chemical formula 1.
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- Heterocyclic com pounds and organic light-emitting diode including the same
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The present invention relates to a novel heterocyclic compound and an organic electroluminescent device comprising the same. The heterocyclic compound is represented by the following Chemical Formula 1, and the organic electroluminescent device including the heterocyclic compound has excellent driving voltage, luminous efficiency, and lifespan properties. Chemical Formula 1. (by machine translation)
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- Heterocyclic compound and organic light emitting device including the same
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Provided are a heterocyclic compound and an organic light-emitting device including the same. The heterocyclic compound may be represented by Formula 1: in the Formula 1, A1, X2, Y1, Y2, m1, m2, R10,R20, R30, b10, b20 and b30 are same as described in the description.
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Paragraph 0521; 0526-0529
(2020/07/15)
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- Thermally-activated delayed fluorescence material and preparation method and application thereof
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The invention relates to a thermally-activated delayed fluorescence material and a preparation method and application thereof. The energy level difference between the singlet state and the triplet states of the thermally-activated delayed fluorescence material is small, so the thermally-activated delayed fluorescence material can be used as an organic light-emitting layer material of an OLED device and can improve the efficiency of the device. The fluorescence material has a molecular structural formula as described in the specification. In the molecular structural formula, R is selected frommethyl, ethyl, propyl, butyl and amyl groups.
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Paragraph 0017; 0037; 0041
(2020/11/12)
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- Photoelectric conversion element, imaging device, optical sensor, and method of using photoelectric conversion element
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The present invention provides a photoelectric conversion element having a photoelectric conversion film which exhibits excellent photoelectric conversion efficiency and responsiveness, an imaging device, an optical sensor, and a method of using a photoelectric conversion element. In the photoelectric conversion element of the invention, a photoelectric conversion material contains at least one selected from the group consisting of a compound represented by General formula (1), a compound represented by General formula (2), and a compound represented by General formula (3).
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- Dark blue electroluminescent compound and preparation method and application thereof
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The invention discloses a dark blue electroluminescent compound and a preparation method and application thereof, and the compound is 2-(4-(9, 9-dimethylacridin-10(9H)-yl)-2, 5-diR2-based phenyl)-1-(4-R1-based phenyl)-1H-phenanthroimidazole. The preparation method of the compound is easy to operate and high in yield, the compounds exhibit dark blue fluorescence, half-width is less than 60 nm, thenon-doped OLED device prepared by taking the material as a luminescent material produces dark blue emission, a starting voltage is 3.3 V, the maximum brightness is greater than 20,000 cd.m, the external quantum efficiency is still greater than 3% when the brightness is up to 10,000 cd.m, and the material is a dark blue light material with excellent performance.
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- Near-Infrared BODIPY-Acridine Dyads Acting as Heavy-Atom-Free Dual-Functioning Photosensitizers
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Boron dipyrromethene (BODIPY) dyes represent a particular class within the broad array of potential photosensitizers. Their highly fluorescent nature opens the door for theragnostic applications, combining imaging and therapy using a single, easily synthesized chromophore. However, near-infrared absorption is strongly desired for photodynamic therapy to enhance tissue penetration. Furthermore, singlet oxygen should preferentially be generated without the incorporation of heavy atoms, as these often require additional synthetic efforts and/or afford dark cytotoxicity. Solutions for both problems are known, but have never been successfully combined in one simple BODIPY material. Here, we present a series of compact BODIPY-acridine dyads, active in the phototherapeutic window and showing balanced brightness and phototoxic power. Although the donor–acceptor design was envisioned to introduce a charge transfer state to assist in intersystem crossing, quantum-chemical calculations refute this. Further photophysical investigations suggest the presence of exciplex states and their involvement in singlet oxygen formation.
- Deckers, Jasper,Cardeynaels, Tom,Penxten, Huguette,Ethirajan, Anitha,Ameloot, Marcel,Kruk, Mikalai,Champagne, Beno?t,Maes, Wouter
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p. 15212 - 15225
(2020/10/19)
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- Method for preparing 9,9-dimethyl acridine
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The invention belongs to the technical field of organic synthesis and in particular relates to a method for preparing 9,9-dimethyl acridine. The method provided by the invention comprises the following steps: mixing 2-(2-(phenyl amino) phenyl) propane-2-alcohol and a hydrogen type molecular sieve based catalyst in an organic solvent, carrying out a reaction for 2-4 hours at 20-50 DEG C, carrying out solid-liquid separation so as to obtain a liquid phase, and removing the organic solvent in the liquid phase, so as to obtain the 9,9-dimethyl acridine. The method has the advantages of being gentle in reaction condition, simple and convenient in operation, green and environment-friendly and high in product yield and is applicable to large-scale industrial production and application, and the catalyst can be recycled and repeatedly used.
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Paragraph 0023-0025; 0028-0029; 0032-0033; 0036-0039; 0042
(2019/10/01)
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- N - aryl - hydrogel arc [tin [tin] light-emitting electroluminescent device as a component of
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wherein Ar is C3-C25 aryl in which at least one aromatic ring atom is nitrogen; X is O, S or CR9R10; R1, R2, R3, R4, R5 and R6 independently are hydrogen, deuterium, C1-C12 alkyl, C4-C12 aryl or C2-C12 alkenyl; R7 and R8 independently are hydrogen, deuterium, C1-C12 alkyl, C4-C12 aryl or C2-C12 alkenyl or R7 and R8 groups attached to a nitrogen atom are joined by a single bond, O, S or CR11R12 to form a single nitrogen-containing substituent; R9 and R10 independently are hydrogen, deuterium, C1-C12 alkyl, C4-C12 aryl or C2-C12 alkenyl; and R11 and R12 independently are hydrogen, deuterium, C1-C12 alkyl, C4-C12 aryl or C2-C12 alkenyl; provided that Ar does not contain an aromatic ring attached to the tricyclic nucleus which contains more than two aromatic ring nitrogen atoms.
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- A benzhydryl radical based on the room temperature of the organic light-emitting material and using the material preparation of organic electroluminescent device
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A benzhydryl radical based on the stability of the organic light-emitting material at room temperature and using the material preparation of the organic electroluminescent device, which belongs to the field of organic light-emitting technology. The present invention in the preparation of the organic light-emitting material, the center of the common characteristic is the carbon free radical, is composed of two C - C covalent bond and a C - N to form a covalent bond. Stability is the light-emitting free radical material in the application of the key nature, connected to the electronic group conducive to stable free radical, in this invention through the nitrogen-containing heterocyclic carbazole, indole, dimethyl acridine and the like in the electronic group to the nitrogen atom is connected directly to the benzyl group, to obtain a stable benzhydryl radical, its stability and PTM, compared with the TTM is greatly improved, and has a room temperature fluorescent. The preparation of the material of the organic electroluminescent device using double thread condition exciton light-emitting, can avoid the traditional organic electroluminescent device in the use of the triplet state exciton, the maximum external quantum efficiency of the device is 0.66%.
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- ORGANIC COMPOUND, AND ORGANIC LIGHT-EMITTING DIODE AND ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE INCLUDING THE SAME
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An organic compound is represented by the Formula below, and an organic light-emitting diode and an organic light-emitting diode display device include the organic compound.
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- CARBAZOLE-BASED COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE INCLUDING THE SAME
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This invention relates to a compound for an organic electroluminescent device represented by Chemical Formula 1 below and to an organic electroluminescent device including the same. The organic electroluminescent device including the compound is improved in thermal stability and light emission efficiency. When this compound is used as a hole transport layer material, the triplet energy of phosphorescent light emitting material in the organic electroluminescent device is increased, thus improving the efficiency of the organic electroluminescent device.
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Paragraph 0097; 0098; 0099
(2017/08/14)
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- COMPOUND, ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME AND DISPLAY INCLUDING THE ORGANIC LIGHT EMITTING DIODE
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The present invention relates to a compound, an organic light emitting diode including the same and a display device including the organic light emitting diode, which provides the compound for the organic photoelectron diode represented by chemical below formula 1.COPYRIGHT KIPO 2016
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- Copper catalyzed coupling of protecting group free and sterically hindered 2-bromobenzyl tertiary alcohols with phenols and anilines: Facile synthesis of xanthenes and dihydroacridines
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A simple and efficient method for the synthesis of xanthenes and dihydroacridines containing a quaternary carbon atom at the 9th-position, is presented. Significantly, the protocol facilitated the smooth participation of sterically hindered and protecting group free 2-bromobenzyl tertiary alcohols in cross coupling reactions with phenols and anilines, under copper-catalysis. The Lewis acid mediated intramolecular C-C bond formation enabled the formation of a quaternary carbon atom at the 9th-position. Remarkably, this two-step protocol required a single column purification technique.
- Mahendar, Lodi,Satyanarayana, Gedu
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p. 20588 - 20597
(2016/03/04)
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- Delay fluorescent compound and using the same and display device having the organic light-emitting diode (by machine translation)
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The present invention provides a delay fluorescent compound and the use of the compound of the organic light-emitting diode and the display device, the delay fluorescent compound is a type 1 or type 2 delay fluorescent compound : [formula 1] ; [Formula 2] . (by machine translation)
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- Anthraquinone-based intramolecular charge-transfer compounds: Computational molecular design, thermally activated delayed fluorescence, and highly efficient red electroluminescence
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Red fluorescent molecules suffer from large, non-radiative internal conversion rates (kIC) governed by the energy gap law. To design efficient red thermally activated delayed fluorescence (TADF) emitters for organic light-emitting diodes (OLEDs), a large fluorescence rate (kF) as well as a small energy difference between the lowest singlet and triplet excited states (ΔEST) is necessary. Herein, we demonstrated that increasing the distance between donor (D) and acceptor (A) in intramolecular-charge-transfer molecules is a promising strategy for simultaneously achieving small ΔEST and large kF. Four D-Ph-A-Ph-D-type molecules with an anthraquinone acceptor, phenyl (Ph) bridge, and various donors were designed, synthesized, and compared with corresponding D-A-D-type molecules. Yellow to red TADF was observed from all of them. The kF and ΔEST values determined from the measurements of quantum yield and lifetime of the fluorescence and TADF components are in good agreement with those predicted by corrected time-dependent density functional theory and are approximatively proportional to the square of the cosine of the theoretical twisting angles between each subunit. However, the introduction of a Ph-bridge was found to enhance kF without increasing ΔEST. Molecular simulation revealed a twisting and stretching motion of the N-C bond in the D-A-type molecules, which is thought to lower ΔEST and kF but raise kIC, that was experimentally confirmed in both solution and doped film. OLEDs containing D-Ph-A-Ph-D-type molecules with diphenylamine and bis(4-biphenyl)amine donors demonstrated maximum external quantum efficiencies of 12.5% and 9.0% with emission peaks at 624 and 637 nm, respectively.
- Zhang, Qisheng,Kuwabara, Hirokazu,Potscavage, William J.,Huang, Shuping,Hatae, Yasuhiro,Shibata, Takumi,Adachi, Chihaya
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supporting information
p. 18070 - 18081
(2015/02/19)
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- MODULATION OF K2P CHANNELS
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Disclosed herein inter alia are compositions and methods useful in the treatment of diseases, for example pain, neurodegeneration, or mood disorders, and for modulating the activity of a K2P channel.
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- SPIROBIFLUORENE COMPOUNDS FOR LIGHT EMITTING DEVICES
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Novel spirobifluorene compounds for light emitting devices where the spirobifluorene ring system comprises at least one acridine-type substituent.
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- NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Organic electroluminescent compounds comprising a triphenylene conjugated to a five-ring fused heterocyclic system, as depicted in formula 1 are provided. Also provided is an organic electroluminescent device comprising these compounds. The organic electroluminescent compounds disclosed herein exhibit good luminous efficiency and excellent material life. They can be used to manufacture OLED devices very superior in terms of operating life and which consume less power due to improved power efficiency.
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- NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Provided are organic electroluminescent compounds of a fused pentacyclic structure of general formula I, and an organic electroluminescent device using said compounds. Since the organic electroluminescent compounds exhibit good luminous efficiency and lifespan, they may be used to manufacture OLED devices which have a superior operational lifetime and also have low power consumption due to the improved power efficiency of the compounds.
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- Detection of explosives via photolytic cleavage of nitroesters and nitramines
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The nitramine-containing explosive RDX and the nitroester-containing explosive PETN are shown to be susceptible to photofragmentation upon exposure to sunlight. Model compounds containing nitroester and nitramine moieties are also shown to fragment upon exposure to UV irradiation. The products of this photofragmentation are reactive, electrophilic NOx species, such as nitrous and nitric acid, nitric oxide, and nitrogen dioxide. N,N-Dimethylaniline is capable of being nitrated by the reactive, electrophilic NOx photofragmentation products of RDX and PETN. A series of 9,9-disubstituted 9,10-dihydroacridines (DHAs) are synthesized from either N-phenylanthranilic acid methyl ester or a diphenylamine derivative and are similarly shown to be rapidly nitrated by the photofragmentation products of RDX and PETN. A new (turn-on) emission signal at 550 nm is observed upon nitration of DHAs due to the generation of fluorescent donor-acceptor chromophores. Using fluorescence spectroscopy, the presence of ca. 1.2 ng of RDX and 320 pg of PETN can be detected by DHA indicators in the solid state upon exposure to sunlight. The nitration of aromatic amines by the photofragmentation products of RDX and PETN is presented as a unique, highly selective detection mechanism for nitroester- and nitramine-containing explosives and DHAs are presented as inexpensive and impermanent fluorogenic indicators for the selective, standoff/remote identification of RDX and PETN.
- Andrew, Trisha L.,Swager, Timothy M.
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p. 2976 - 2993
(2011/06/21)
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- 3-piperidyl-4-oxoquinazoline derivatives and pharmaceutical compositions comprising the same
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3-piperidyl-4-oxoquinazoline derivatives are provided, which is represented by the formula (I): wherein R represents an amino group or a cyclic amino group such as dibenzoazepine, each of which is substituted with a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or the like, n is an integer of 1 to 3, R3and R4independently represents a hydrogen atom, a lower alkyl group, or the like, or a pharmaceutically acceptable salt thereof. Compounds (I) of the present invention have excellent MTP-inhibitory activity. Thus, these compounds not only inhibit formation of LDL that is a cause of arteriosclerotic diseases but also regulate TG, cholesterol, and lipoproteins such as LDL in the blood and regulate cellular lipids through regulation of MTP activity. They can also be used as a new type of preventive or therapeutic agents for hyperlipemia or arteriosclerotic diseases. Furthermore, they can be used as therapeutic or preventive agents for pancreatitis, obesity, hypercholesterolemia, and hypertriglyceridemia.
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- Modified Tetrahelicene Systems, III: Doubly ortho-Bridged Triphenylamine Derivatives
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The heterocyclic (2a, b, 19, 3b-f, and 9a-c) as well as the carbocyclic naphthanthracene derivatives (21-23), which can be represented by the skeleton types A and B (table 2), are helically distorted in the stereochemical ground state.They racemize so fast, however, that their free enthalpies of racemization (ΔG* * 21 (88) kcal(kJ)/mol) could be determined by standard DNMR methods.Only derivatives of compound type 3 with relatively large bridge Y (3a, Y = C(CH3)2, 3g', Y = S) exhibit higher racemization barriers (ΔG*160 = 24 (100.4) and 28.4 (119) kcal(kJ)/mol), which had to be evaluated by classical equilibration procedures.With the results obtained in this way the working hypothesis has been confirmed, according to which for compounds A and B enlargement of the bridges Y and/or X, as well as diminution of the center Z - in holding the periphery constant - should lead to an increase of nonbonding interactions in the planar transition state and therefore to an increase of the racemization barrier.It has furthermore been shown with numerous substitution products of compound type 1 that here frequently accidental coincidences of the 1H NMR signals of diastereotopic and also constitutopic groups do occur.
- Hellwinkel, Dieter,Schmidt, Werner
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p. 358 - 384
(2007/10/02)
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