44 results about "Coronene" patented technology

A combination of a substrate selected from silicon, silicon carbide or a metal and a grapheme precursor having the following properties: (a) an aromatic structure that forms the basis of the graphene structure, said aromatic structure being selected from the group consisting of: benzene, naphthalene, pyrene, anthracene, chrysene, coronene, and phenanthrene, or a cyclic or acyclic structures which can be converted to aromatic structures and (b) functional groups that can react with each other to form additional aromatic structures.

The present invention describes organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and polyacenes, with variety of dienophiles containing at least one heteroatom and in some cases two heteroatoms bonded to aromatic moiety, such as, thioxomalonates, azodicarboxylates, thialdehyde, acylnitroso and N-sulfinylamides. The Diels-Alder adducts are prepared by a simple, one step cycloaddition reaction of the polycyclic aromatic compounds, such as, pentacene, or other fused aromatic compounds, with heterodienophiles. The Diels-Alder adducts according to the present invention all form soluble adducts with pentacene and can be converted back to pentacene by retro-Diels-Alder reaction at moderate (60-250° C.) temperatures both in bulk, in solution or as thin-films.

The application discloses a method for preparing coronene compounds, the method comprising the following steps: (1) pre-treating a catalyst containing SAPO molecular sieves; (2) loading a raw material containing acyclic olefins into a reactor , contacting and reacting with the pretreated catalyst in step (1), to obtain the coronene compound; wherein, the pretreatment is to activate the catalyst. The method does not require expensive raw materials, complicated operations, and is suitable for large-scale production.

A method for preparing coronene compounds from acyclic olefins, characterized in that the method comprises: loading the reaction raw materials into a reactor, contacting and reacting with a catalyst comprising activated silica-alumina molecular sieves to obtain the coronets Benzene compounds; wherein, the reaction raw materials include acyclic olefins. The method has mild preparation conditions, easy operation and simple process; the raw materials used are low in cost and easy to obtain, and are suitable for large-scale production.

The invention relates to a method for preparing coronene compounds from alcohol raw materials. The method of the present invention comprises the following steps: contacting and reacting raw materials containing alcohol compounds and catalysts in a reactor to obtain coronene compounds; wherein, the catalysts include silicon-aluminum molecular sieves that have undergone activation treatment.

The invention relates to coronene compound containing thioether in lateral chain and the preparation method thereof. The structural formula of the compound is shown in the descriptiopn: R refers to alkyl. In the method, ring trimerization- ferric trichloride coronene method, namely 2- (4'- bromophenyl) ethanol is taken as raw material, through hydroxyl bromo, thioether is formed, palladium-catalyzed is selected for direct coupled reaction, so as to obtain diphenylacetypene ramification, under the catalysis of cobalt carbonyl, corresponding hexaphenylbenzene is produced by trimerization cyclization. Anhydrous ferric trichloride is oxidized in methylene dichloride and nitromethane, then reduction is performed by using iodine and sodium borohydride system, and after drying, THF (tetrahydrofuran) is used for recrystal. The synthetic method provided by the invention is simple, is high in yield, and can be extensively used in organic LBD, field-effect tubes and solar batteries.

The invention discloses a preparation method of coronene. The preparation method comprises the following steps: coupling reaction: subjecting 1 equivalent of compound shown in a formula I and 4.2-5.6 equivalent of compound shown in a formula II to coupling reaction and converting a reaction product to a compound shown in a formula III; ring closing reaction: subjecting the compound shown in the formula III to ring closing reaction in the presence of acid and converting a reaction product to coronene shown in a formula IV, wherein the formulas I, II, III and IV are shown in the specification. The preparation method has the beneficial effects that the preparation method is simple in process and is easy to operate; the required raw materials are available and are low in costs; therefore the preparation method is suitable for large-scale production.

The present invention relates to a 1, 5, 9-trisubstituted coronene compound and a synthesis method thereof. The structural formula of the compound is shown in img file = 'dest _ path _ image 001. TIF 'wi = '109 'he = '108', wherein R represents H, C1-C18 alkyl, phenyl, 4-methylphenyl, 4-methoxy phenyl, benzyl, cyclohexyl, 4-trifluoromethylphenyl, thiophene, furan and the like. According to the technical scheme of the invention, the easily prepared 1, 5, 9-triamido triphenylene is subjected to diazotization and halogenation reaction to obtain the tri-halogenated triphenylene. After that, the tri-halogenated triphenylene is subjected to Sonogashira reaction with various alkynes to generate atriyne-triphenylene compounds. Finally, through the metal-catalyzed reaction and the cyclization reaction under the effect of an organic base, various 1, 5, 9-trisubstituted coronene compounds, novel in structure, can be obtained. According to the technical scheme of the invention, raw materials are easy for mass preparation. Meanwhile, the synthesis step is relatively short and the operation is convenient. The obtained trisubstituted coronene compound is good in thermal stability and chemical stability, and the trisubstituted coronene emits the relatively strong fluorescence within the range of 420-550 nm according to the fluorescence emission spectrum of the trisubstituted coronene compound. Therefore, the trisubstituted coronene is an excellent fluorescent material for preparing UV ultraviolet charge-coupled devices (UV-CCD) and organic light-emitting diodes (OLEDs), and has a wide application prospect in the field of electronic materials.

The invention relates to a 1, 5, 9-triazanaphthalene coronene compound and a synthetic method thereof. The compound has a structural formula as shown in the description, wherein R represents any one of hydrogen, alkyl, aryl, heterocyclic aryl, trifluoromethyl and perfluoroalkyl. The synthetic method disclosed by the invention comprises the following steps of: utilizing cheap 2, 3- dichloronitrobenzene which is easy to obtain as a raw material to prepare trinitro type substances; reducing the trinitro type substances so as to obtain triamine type substances; enabling the triamine type substances to react with acyl chloride or anhydride so as to obtain triamide type compounds; and cyclizing the triamide compounds so as to obtain substituted 1, 5, 9-triazanaphthalene coronene compounds in novel structures. The synthetic method is few in synthetic steps, mild in reaction conditions, convenient to operate and high in yield. The fluorescence emission spectrum of the triazanaphthalene coronene compound in an organic solvent has stronger fluorescence within the range of 420-550nm; the triazanaphthalene coronene compound has favorable heat stability and chemical stability, and can be used for preparing luminescent materials of organic light-emitting diodes and organic semiconductor materials.

Provides is a nano supramolecular assembly body of a fully methylated beta-cyclodextrin modified coronene derivative. A chemical formula of a construction unit of the assembly body is C184H248N6O70, a chemical structural formula of the assembly body is shown in the description, the supramolecular assembly body is established through intermolecular pi-pi interaction, the assembly body is a nanoscale and clubbed aggregate in morphological size. The nano supramolecular assembly body has the advantages that the preparation method of the nano supramolecular assembly body of the fully methylated beta-cyclodextrin modified coronene derivative is simple and convenient, the yield is high, the assembly body has good fluorescent properties; the supramolecular assembly body has good selectivity to nitro aroma compounds, has low detection limit to a polynitro explosive compound 2,4,6-trinitrophenol and has the wide application prospect in the field of fluorescence sensing detection.