1644 results about "Alkyl substitution" patented technology

To provide a salt which allows a resist pattern having good CD uniformity (CDU) to be produced, and a resist composition containing the same.SOLUTION: The salt is represented by formula (I) [where Q1 and Q2 each represent a fluorine atom or a perfluoroalkyl group; R1 and R2 each represent a hydrogen atom, a fluorine atom or a perfluoroalkyl group; z represents an integer of 0-6; X1 and X2 each represent -CO-O-, -O-CO-, -O-CO-O- or -O-; L1 represents a single bond or a substituted / unsubstituted hydrocarbon group; A1 represents an optionally substituted lactone ring; L2 represents a single bond or an alkanediyl group; R3 represents an aliphatic hydrocarbon group having an iodine atom, wherein a hydrogen atom contained in the group may be substituted with a fluorine atom or an alkyl group; and Z+ represents an organic cation].SELECTED DRAWING: None

The present invention discloses a method for detecting and applying C1-C2-alkyl-substituted phenol isomers, which relates to the technical field of environmental detection and includes: selecting a corresponding sample pretreatment process to prepare a test sample according to the petroleum content range in the sample; under a mobile phase of methanol-5.0-6.5 mmol / L ammonia water, using LC-MS to detect the test sample to obtain the concentration of the first component and the standardized concentrations of co-eluted 3,5-dimethylphenol and 2,6-dimethylphenol; under a mobile phase of acetonitrile-4.0-10.0 mmol / L ammonia water, using LC-MS to detect the test sample to obtain the concentration of 3,5-dimethylphenol, or the standardized concentrations of co-eluted 3,5-methylphenol and 3-ethylphenol, or the standardized concentrations of co-eluted 2,6-dimethylphenol and 2,4-dimethylphenol; under a mobile phase of methanol-5.0-6.5 mmol / L ammonia water or acetonitrile-4.0-10.0 mmol / L ammonia water, using LC-MS to separately detect the calibration samples of the co-eluted components, and calculate the conversion factor of the co-eluted components and the concentration of the other component. The present invention realizes the accurate quantification of phenol and 12 C1-C2-alkyl-substituted phenol isomers.

The present invention discloses a characterization method and application of C0-C2-alkyl-substituted phenols, relating to the technical field of environmental detection. The method includes: selecting a corresponding sample pretreatment process to prepare a test sample according to the petroleum content range in the sample; detecting the test sample by LC-MS under a mobile phase system of methanol-5.0-6.5 mmol / L ammonia water to obtain the concentration of the first component and the normalized concentrations of co-eluted 3,5-dimethylphenol and 2,6-dimethylphenol; detecting the test sample by LC-MS under a mobile phase system of methanol-7.0-11.5 mmol / L ammonia water to obtain the concentration of 3,5-dimethylphenol; detecting calibration samples of 3,5-dimethylphenol and 2,6-dimethylphenol respectively by LC-MS under a mobile phase system of methanol-5.0-6.5 mmol / L ammonia water, calculating a conversion factor, and obtaining the concentration of 2,6-dimethylphenol; and obtaining the contents of 13 single components of C0-C2-alkyl-substituted phenols based on the concentrations of the first component, 3,5-dimethylphenol and 2,6-dimethylphenol. The present invention realizes the quantitative characterization of 13 single components of C0-C2-alkyl-substituted phenols.

The invention discloses an environment-friendly organic silicon intumescent fireproof coating for a transformer substation or a converter station as well as a preparation method and application of the environment-friendly organic silicon intumescent fireproof coating. The coating comprises the following raw materials in parts by mass: 30-60 parts of organic silicon resin, 30-45 parts of an intumescent flame retardant, 5-10 parts of modified glass powder, 2-20 parts of an inorganic filler, 2-10 parts of an auxiliary agent and 5-25 parts of a curing agent. The intumescent flame retardant takes a phosphazene compound as a gas source and an acid source; the phosphazene compound is prepared by carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and melamine or dicyandiamide; the modified glass powder is prepared by mixing a plurality of glass powder with the melting point of 350-700 DEG C and then modifying by adopting a silane coupling agent. According to the invention, the high-temperature resistance of the organic silicon resin coating is improved through formula design, so that the service life of the steel in a high-temperature scene is prolonged, the performance reliability of fire-fighting equipment of a transformer substation or a converter station is improved, and the purpose of high-temperature resistance is achieved.

The invention relates to the technical field of fibers, and discloses an ultrahigh-moisture-absorption anti-static polyester fiber and a preparation method thereof. The preparation method comprises the following steps: carrying out nucleophilic substitution reaction on 1, 2-benzisothiazolin-3-one and methacryloyl chloride to obtain modified benzisothiazolinone; the preparation method comprises the following steps: carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and allylamine, and then carrying out nucleophilic substitution reaction on the phosphonitrilic chloride trimer and melamine again to obtain modified cyclophosphazene; the preparation method comprises the following steps: mixing gamma-methacryloxypropyltrimethoxysilane with aluminum zinc oxide for reaction, and mixing the obtained modified aluminum zinc oxide with modified benzisothiazolinone and modified cyclophosphazene for copolymerization in the presence of an initiator to obtain a flame-retardant antibacterial additive; mixing the flame-retardant antibacterial additive, calcium carbonate and polyethylene glycol terephthalate, performing melt spinning, and performing acid treatment to obtain modified polyester fibers; dipping the modified polyester fiber in a finishing liquid containing modified chitosan to obtain the ultrahigh-moisture-absorption anti-static polyester fiber.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a phenylboronic acid-based P / N / B-containing halogen-free flame retardant, a preparation method thereof and application of the phenylboronic acid-based P / N / B-containing halogen-free flame retardant in epoxy resin. The preparation method comprises the following steps: by taking diphenyl hypophosphorous chloride as a basis, preparing a flame-retardant intermediate through nucleophilic substitution reaction between diphenyl hypophosphorous chloride and an aldehyde group-containing phenolic compound, then reacting a phenylboronic acid structure with 3-amino-1, 2-propylene glycol to obtain an amino group-containing phenylboronic acid compound, and finally reacting the phenylboronic acid compound with 3-amino-1, 2-propylene glycol to obtain the amino group-containing phenylboronic acid compound. And finally, carrying out a Schiff base reaction on the flame-retardant intermediate and an amino-containing phenylboronic acid compound to obtain the halogen-free flame retardant containing phosphorus, nitrogen and boron elements. The flame retardant provided by the invention can significantly improve the flame retardant property and mechanical property of epoxy resin. A flame-retardant epoxy resin prepared based on the flame retardant; the influence on Tg of an epoxy resin cured product is small, the smoke suppression and char formation performance and the mechanical performance of the cured product can be remarkably improved, and meanwhile, the flame retardant has excellent flame retardant efficiency; the limit oxygen index of the flame-retardant epoxy resin can reach 31%; the vertical combustion grade is V-0 or above, and the carbon residue amount can reach 18% or above.

The invention provides an anti-aging flame-retardant epoxy resin coating and a preparation process thereof, and belongs to the technical field of coating preparation. The preparation process comprises the following steps: preparing the flame-retardant additive; preparing a coated modified black phosphorus nanosheet; preparing modified hollow glass beads; preparing the epoxy resin coating. The preparation method comprises the following steps: dissolving 3, 4-dihydroxy benzaldehyde and 2-amino-4-methylphenol in absolute ethyl alcohol, carrying out a heating reflux reaction, carrying out dehydration condensation on an aldehyde group in the 3, 4-dihydroxy benzaldehyde and an amino group in the 2-amino-4-methylphenol to generate an imine bond-containing intermediate, respectively dissolving the intermediate and phosphonitrilic chloride trimer, and carrying out a reaction to obtain the phosphonitrilic chloride trimer. The preparation method comprises the following steps: firstly, adding phosphonitrilic chloride into an intermediate, then mixing for reaction, enabling phenolic hydroxyl groups in the intermediate and phosphonitrilic chloride trimer to be subjected to nucleophilic substitution reaction to generate the flame-retardant additive containing phosphorus and a Schiff base structure, and the flame-retardant additive has relatively good compatibility with an epoxy resin matrix, is not easy to separate out and can effectively improve the flame-retardant property of the epoxy resin coating.

The invention belongs to the technical field of OLEDs, and provides a polycyclic compound containing triphenyl silicon and a polyalkyl substituent group and an organic electroluminescent device containing the polycyclic compound. The structural general formula of the polycyclic compound is as shown in formula I in the specification. Benzofuran with higher electronegativity is introduced to a ring structure composed of nitrogen atoms and boron atoms, triphenyl silicon is introduced to the para-position of boron, and the synergistic effect of benzofuran and triphenyl silicon can significantly enhance the multiple resonance of a light-emitting core and reduce vibration relaxation. Due to simultaneous use of the benzofuran and the triphenyl silicon, the problems of vibration relaxation increase, spectrum widening and the like caused by introduction of the polyalkyl substituent are remarkably improved, the luminous efficiency of the material is remarkably improved, and the color purity is improved, so that the requirement of BT.2020 wide color gamut display standard on a luminescent spectrum is met. I

This disclosure relates to the use of di(alkyl substituted phenyl)amine antioxidants as additives in lubricant compositions having good oxidation properties in engine crankcase applications, especially in compression ignited engine and or spark ignited engine applications, where the antioxidant comprises from 0 to 10 mass% mono-C9-alkyl substituted diphenyl amine, and 90 to 100 mass% di-C9-alkyl substituted phenyl amines based upon the weight of the mono- and di-C9-alkyl substituted phenyl amines, preferably where tri-C9-alkyl substituted phenyl amines are minimized and ortho substituted di-C9-alkyl substituted phenyl amines are minimized.

The invention relates to the technical field of biogenic amine detection, in particular to a dicyanoethylene-based fluorescent material as well as a preparation method and application thereof. After the biogenic amine is in contact with the glass surface fluorescent probe, due to the nucleophilic characteristic of the biogenic amine, the biogenic amine can be subjected to nucleophilic substitution reaction with a probe molecule dicyanovinyl group to generate an imine chemical structure. As the electron-withdrawing capability of dicyanoethylene is stronger than that of imine, the intramolecular charge transfer effect of probe molecules is greatly reduced, so that blue shift of absorption and luminescence properties of the probe molecules is caused, and after the fluorescent probe is loaded on the surface of glass, the fluorescence intensity of the fluorescent probe is improved. The formed dicyanoethylene-based fluorescent material provides a solution for the technical problem that the existing biogenic amine detection mode is inconvenient.

The invention relates to the technical field of dispersing agents, and particularly discloses a high-concentration water-based graphene dispersing agent. The high-concentration water-based graphene dispersing agent is prepared from the following raw materials in parts by weight: 25 to 30 parts of a modified nonionic surfactant, 8 to 12 parts of sodium lignin sulfonate, 0.4 to 0.8 part of a de-foaming agent and 90 to 100 parts of de-ionized water, the modified nonionic surfactant is prepared by the following steps: carrying out dehydration esterification reaction on 1-pyrene butyric acid and N-hydroxysuccinimide, carrying out nucleophilic substitution reaction on the obtained product and polyethylene glycol monododecyl ether to obtain modified 1-pyrene butyric acid, and finally polymerizing the modified 1-pyrene butyric acid and n-butyl acrylate. The method is easy to operate, graphene does not need to be subjected to oxidation reduction, the integrity of a graphene sheet layer can be completely kept, and the performance of the graphene can be fully exerted; the prepared graphene dispersing agent realizes efficient dispersing effect, excellent stability and environment-friendly safety characteristics, and provides solid technical support for wide application of graphene in multiple fields.

The invention relates to an organic molecule, in particular for the application in optoelectronic devices. According to the invention, the organic molecule includes or consists of a structure represented by Formula IwhereinR1 is selected from the group consisting of hydrogen and C6-C12-aryl, which is optionally substituted with one or more C1-C6-alkyl substituents, andRa is at each occurrence independently selected from the group consisting of: hydrogen, deuterium, N(R5)2, OR5, Si(R5)3, B(OR5)2, B(R5)2, OSO2R5, CF3, CN, F, Br, I, C1-C40-alkyl, C1-C40-alkoxy, C1-C40-thioalkoxy, C2-C40-alkenyl, C2-C40-alkynyl, C6-C60-aryl, and C2-C57-heteroaryl.

The invention relates to the field of medicine synthesis, and particularly discloses a preparation method of abesilib and an intermediate thereof. The invention relates to an abesiril intermediate, which is 4-chloro-5-fluoro-2-(methylsulfonyl) pyrimidine (IV) and 4-fluoro-6-(5-fluoro-2-(methylsulfonyl) pyrimidine-4-yl)-1-isopropyl-2-methyl-1H-benzo [d] imidazole (V). The invention further provides a preparation method of the abesiril intermediate. And carrying out nucleophilic substitution reaction on the abesilib intermediate V and 5-[(4-ethyl piperazine-1-yl) methyl] pyridine-2-amine to prepare the abesilib. According to the preparation method, the raw materials are cheap and easy to obtain, the reaction selectivity of functional groups is high, ectopic impurities generated by a halogen atom competition reaction are effectively avoided, meanwhile, introduction of heavy metal palladium can be reduced, and therefore the cost is reduced. The synthetic route is simple, the atom economy is high, the controllability in production is high, and the method is suitable for industrial production.

The invention discloses a quaternary ammonium salt modified linalool derivative as well as preparation and application thereof. The structure of the quaternary ammonium salt modified linalool derivative is shown as a formula (I). The quaternary ammonium salt modified linalool derivative is prepared by carrying out nucleophilic substitution reaction on linalool and benzyltrimethylammonium chloride. The derivative can be applied to water-based disinfectants or antibacterial daily necessities. The derivative has good water solubility and bactericidal activity. Through the synergistic interaction of the quaternary ammonium salt group and the linalool mother nucleus, the disinfection and sterilization capacity of the linalool derivative is remarkably improved compared with that of independent quaternary ammonium salt or linalool, and the linalool derivative particularly has a better disinfection and killing effect on pathogens of a quaternary ammonium salt-resistant disinfectant. # imgabs0 #

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a halogen-free flame retardant containing a Schiff base structure, a preparation method of the halogen-free flame retardant and application of the halogen-free flame retardant in epoxy resin. An intermediate is prepared through nucleophilic substitution reaction between an aldehyde group-containing phenolic compound and an acyl chloride compound, and a halogen-free flame retardant containing phosphorus and nitrogen elements and a Schiff base structure is obtained through Schiff base reaction between the intermediate and 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane. The flame retardant combines a Schiff base structure, phosphorus and silicon elements, and has the advantages of good thermal stability, significantly improved char yield, excellent flame retardant effect and significantly improved mechanical properties. The modified epoxy resin is further used for modifying the epoxy resin to prepare the flame-retardant epoxy resin; under the condition that the influence on the thermal performance of an epoxy resin cured product is small, the charring performance and the mechanical performance of the epoxy resin cured product can be remarkably improved, and the flame-retardant efficiency is excellent.

The invention relates to a compound, a composition, an organic optoelectronic device, and a display device. The compound is represented by Chemical Formula 1, where X1 and X2 are each independently NRa, O, S, Se, or Te, any one of R1 to R10 is a group represented by Chemical Formula A, the remaining ones of R1 to R10 and Ra are each independently hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted amine group, a substituted or unsubstituted silyl group, a cyano group, or a halogen, and R1 to R10 and Ra are each independently present, or adjacent two of R1 to R10 and Ra are linked to form a ring.

The present invention relates to the field of oil exploitation and oilfield chemical materials, particularly to a fatty alcohol copolymer and a surfactant composition, a preparation method therefor, and a use thereof. The copolymer has a chemical structure represented by formula (1), wherein R is selected from substituted or unsubstituted C14-C70 alkyl and substituted or unsubstituted C14-C70 alkenyl, a substituent for the substitution is selected from at least one of hydroxyl, halogen, cyano, nitro, and amino, x is selected from a positive integer of 20-50, and y is selected from a positive integer of 20-40. In the present invention, the surfactant comprising the fatty alcohol copolymer has the characteristics of good high-temperature resistance and salt resistance and low oil / water interface tension.

The invention discloses a metal supported activated carbon catalyst for efficiently preparing aquacide dichloride and application of the metal supported activated carbon catalyst. The catalyst is prepared by taking activated carbon as a carrier, loading Lewis acid active components such as aluminum ions, zinc ions, iron ions, copper ions and the like through an impregnation method, and carrying out vacuum pyrolysis activation treatment at 300-600 DEG C. The catalyst synergistically catalyzes a nucleophilic substitution reaction of a pyridine derivative and alkyl halide in an aprotic polar solvent such as acetonitrile or nitrobenzene, and synthesis of diquat dichloride can be realized under the conditions that the temperature is 100-180 DEG C and the pressure is 1-3 MPa. In a reaction system, the mass ratio of the pyridine derivative to the catalyst to the solvent is 1: (0.01-0.05): (5-8), and real-time monitoring and regulation are performed through an online infrared spectrum, a liquid chromatograph and a gas chromatograph-mass spectrometer. The purity of the product is more than 99% after the product is subjected to filtration, recrystallization with an ethanol-water mixed solvent and vacuum drying. The catalyst provided by the invention has the characteristics of high activity, strong stability and recoverability, obviously improves the atom economy of the reaction, simplifies the production process, reduces the energy consumption and pollution, and is suitable for large-scale industrial production.

The invention provides a non-aqueous electrolyte and a lithium ion battery thereof. The non-aqueous electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, wherein the additive comprises a compound A as shown in a formula I and a compound B as shown in a formula II. Wherein R1, R2, R3 and R4 are respectively and independently selected from hydrogen, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C2-C12 alkenyl and substituted or unsubstituted C2-C12 alkynyl, n is a natural number from 1 to 5, and M is alkali metal. The non-aqueous electrolyte provided by the invention contains two additives, namely the compound A and the compound B, and through the synergistic effect of the two additives, the increase of high-temperature storage internal resistance can be reduced, and the high-temperature storage performance of the lithium ion battery can be improved. # imgabs0 #

The invention discloses a high-selectivity catalyst. The catalyst is prepared from the following raw materials: a phosphine-containing ligand, a transition metal compound and an organic solvent, the structural formula of the phosphine-containing ligand is shown in the following formula: # imgabs0 #, wherein n is an integer in the range of 2-10; r1, R2 and R3 are the same or different, and R1, R2 and R3 are selected from one or a combination of more of C2-C9 alkyl, aryl, substituted alkyl and substituted aryl. The chromium catalyst containing the phosphorus ligand and the organic aluminum compound are adopted as a double-catalysis system for ethylene polymerization, ethylene oligomerization can be achieved, high selectivity to 1-hexene and 1-octene is achieved, and the catalytic activity is high. A double-center catalytic system is adopted, on the basis of ensuring catalytic activity, generation of solid polymers is reduced, scaling of equipment and pipelines in the production process is avoided, and long-term continuous production is achieved.

The invention belongs to the technical field of photoelectric materials, and provides a nitrogen-containing heterocyclic compound and an organic electroluminescent element containing the nitrogen-containing heterocyclic compound. A nitrogen-containing heterocyclic compound having a structure # imgabs0 # represented by formula (1), in which X is selected from O or S, R1-R16 are each independently selected from hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C30 aryl, and substituted or unsubstituted C3-C30 heteroaryl, and in the formula (1), R1-R16 are each independently selected from hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C6-C30 aryl, or substituted or unsubstituted C6-C30 heteroaryl, r1 to R16 independently exist, or two adjacent R1 to R16 are connected to form a ring. The organic electroluminescent element prepared by using the compound can realize reduced driving voltage and durable service life, and the organic electroluminescent element has better performance.

The invention relates to the technical field of chemical synthesis, and particularly discloses an alpha methyl beta phosphonate compound and a synthesis method thereof.The alpha methyl beta phosphonate compound is obtained by directly oxidizing the alpha position of aryl ketone into carbon positive and combining the carbon positive with diethyl phosphite anions under the alkaline condition by using hydrogen peroxide and iodine as oxidizing agents. The alpha methyl substituted beta phosphate ester compound can be generated by a one-step method. The method is suitable for synthesizing compounds of phosphoric acid (methyl, ethyl, propyl and the like) with different alkyl substitutes (methyl, ethyl, propyl and the like) at carbonyl alpha positions. According to the method, the alpha-methyl substituted beta phosphate compound can be synthesized only by using commercial cheap and easily available aryl ketone as a raw material, using hydrogen peroxide and iodine as oxidants and using diethyl hypophosphite as a phosphine source, and reacting in the DMSO solvent at 100 DEG C for 12 hours, so that the target product can be obtained, and the yield is excellent. Compared with previously reported methods, the method does not need low-temperature operation, is simple to operate, adopts a one-pot method, does not need a metal catalyst, and all raw materials are common bulk chemicals.

The invention discloses a conjugated polymer based on alkyl substituted phenyl and a preparation method and application thereof, and belongs to the technical field of high polymer materials. The structural formula of the conjugated polymer provided by the invention is shown as a formula (I): # imgabs0 #, in the formula (I), X1 to X4 are respectively and independently H or R, and at least one of X1 to X4 is R. Alkyl substituted phenyl is used as an intermediate unit, 3, 4-ethylenedioxythiophene is used as an electron donating unit, a benzene ring is introduced, so that a fused ring structure exists in a rigid coplane in a molecule, the charge mobility is enhanced, and alkyl with a specific substitution number and substitution position is combined, so that the charge mobility is improved. According to the conjugated polymer, the electron distribution and the conjugated chain length of the conjugated polymer can be adjusted, the conjugated polymer with good electrochromic properties such as low bandwidth, wide light absorption range, short response time, good optical transmittance and good stability is obtained, and the conjugated polymer has wide application in preparation of electrochromic materials or electrochromic devices.

This disclosure relates to the use of di(alkyl substituted phenyl)amine antioxidants as additives in lubricant compositions having good oxidation properties in engine crankcase applications, especially in compression ignited engine and or spark ignited engine applications, where the antioxidant comprises from 0 to 10 mass% mono-C9-alkyl substituted diphenyl amine, and 90 to 100 mass% di-C9-alkyl substituted phenyl amines based upon the weight of the mono- and di-C9-alkyl substituted phenyl amines, preferably where tri-C9-alkyl substituted phenyl amines are minimized and ortho substituted di-C9-alkyl substituted phenyl amines are minimized.

The invention discloses a high-resolution mass spectrometry detection method for chromatography co-outflow of 2, 4-dimethylphenol and 2, 6-dimethylphenol and application, and relates to the technical field of environmental detection.The method comprises the steps that according to the petroleum content range in a sample, a corresponding sample pretreatment process is selected to prepare a sample; the method comprises the following steps: under an acetonitrile-5-8.0 mmol / L ammonia water mobile phase system, detecting and collecting primary mass spectrum full scanning (MS1) and selective ion secondary mass spectrum (MS2) data of a standard sequence sample, a conversion factor calibration sample and a sample by utilizing LC-HRMS (Liquid Chromatography-High Resolution Mass Spectrometry); according to MS1 data, standard concentrations of co-effluent components 2, 4-dimethylphenol and 2, 6-dimethylphenol and concentrations of other 11 phenols and alkyl substituted phenols are calculated; according to the MS2 data, the concentration of 2, 4-dimethylphenol is calculated; and according to the MS1 data, calculating a conversion factor of the co-effluent component, and further calculating the concentration of 2, 6-dimethylphenol. The detection limit of the method is lower than 1.0 microgram / L, and the sensitivity of the method is 1-2 orders of magnitude higher than that of a standard HJ744-2015 (derivatization-GC-MS method) phenolic compound testing method.

The invention belongs to the technical field of chemical production, and particularly relates to an ionic liquid catalyst for synthesizing long-chain alkylbenzene as well as a preparation method and application of the ionic liquid catalyst. The ionic liquid catalyst is a mixed multi-acidic ionic liquid catalyst and mainly comprises two ionic liquids with different properties. Wherein the cation of at least one ionic liquid is derived from a hydrohalide or quaternary ammonium salt of an amine substituted by an alkyl group, and the other ionic liquid is an acidic ionic liquid. The ionic liquid catalyst can be applied to the reaction of long straight-chain olefin or mixed olefin raw materials and benzene to synthesize long-chain alkylbenzene, the reaction condition is mild, the product conversion rate is high, and the monoalkylbenzene selectivity is good. The catalyst has excellent raw material compatibility and recycling performance.

The invention relates to the technical field of adsorption materials, and discloses a post-modified imine-COF adsorbent and a preparation method and application thereof, the adsorbent comprises the following structural units: a COF skeleton, which is a two-dimensional or three-dimensional porous skeleton formed by an aromatic aldehyde monomer and an amino monomer through a Schiff base reaction; the imine group is formed in a COF skeleton through a post-modification reaction, and the imine group is-C = NR, r is selected from one or more of a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted heterocyclic group and a hydrogen atom. The adsorbent retains excellent structural characteristics of the COF material, realizes high density and uniform distribution of functional groups, and avoids interference of functional monomers on crystal nucleation and growth, so that the adsorption performance of the adsorbent is improved, and the adsorbent can efficiently capture rare earth when being applied to a rare earth-containing solution.

The invention relates to a compound of formula (I) wherein X is selected from the group consisting of-O-(CH2) n-wherein n is 0 to 4, R1 and R2 are independently selected from the group consisting of C11-C25 alkyl groups, SP is a spacer, in particular selected from the group consisting of saturated C4-C8 alkyl groups, unsaturated C4-C8 alkyl groups and substituted or unsubstituted C6 aromatic compounds, in particular substituted C6 aromatic compounds are alkyl substituted C6 aromatic compounds, Y is a heteroatom, n is 0 to 4, and R1 and R2 are independently selected from the group consisting of C11-C25 alkyl groups, SP is a spacer, in particular selected from the group consisting of saturated C4-C8 alkyl groups, unsaturated C4-C8 alkyl groups, and substituted or unsubstituted C6 aromatic compounds, in particular substituted C6 aromatic compounds are alkyl substituted C6 aromatic compounds. L is a peptide synthesis linker, in particular selected from the group consisting of-O-and-NH-, L is a peptide synthesis linker, and m is 0 or 1, in particular m is 1.

The purpose of the present invention is to provide a light-emitting element having excellent luminous efficiency and durability life. The present invention is a compound represented by general formula (1). (In general formula (1), R1, R2, and R5 to R8 are each independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heteroaryl group. And R3 and R4 each represents a carbon atom having a substituent. R3 and R4 may be bonded to each other. And L is an unsubstituted arylene group with the carbon atom number of 6-20. > # imgabs0 #

The invention discloses a phase transfer catalyst of metal ion complexing crown ether for efficiently preparing aquacide dichloride and application of the phase transfer catalyst. The catalyst is prepared by taking crown ethers as 18-crown-6 and dicyclohexyl-18-crown-6 ether and complex ions as lewis acid active components such as potassium ions, lithium ions, cobalt ions, copper ions and the like through a direct chemical method. The catalyst synergistically catalyzes a nucleophilic substitution reaction of a pyridine derivative and alkyl halide in an aprotic polar solvent such as acetonitrile or nitrobenzene, and synthesis of diquat dichloride can be realized under the conditions of 60-140 DEG C, normal pressure and no oxygen. The mass ratio of the pyridine derivative to the catalyst to the solvent in a reaction system is 1: (0.001-0.05): (5-8), and real-time monitoring and regulation are performed through an online infrared spectrum, a liquid chromatograph and a gas chromatograph-mass spectrometer. The purity of the product is more than 99% after the product is subjected to filtration, recrystallization with an ethanol-water mixed solvent and vacuum drying. The catalyst provided by the invention has the characteristics of high activity, strong stability and recoverability, obviously improves the atom economy of the reaction, simplifies the production process, reduces the energy consumption and pollution, and is suitable for large-scale industrial production.