79 results about "Cucurbituril" patented technology

The invention relates to the technical field of nuclear waste treatment, in particular to a cucurbituril-based supramolecular organic framework material as well as a preparation method and application thereof. A construction unit of the supramolecular organic framework material is constructed by taking cucurbit [8] uril (CB8) as a subject and terephthalyl viologen ligand 1, 1 ''-(1, 4-phenylene) bis ([4, 4 '-bipyridyl]-1-onium) salt (PBV. 2X) as an object through the bonding effect of the subject and the object; in the molecular structure of the supramolecular organic framework material, the construction units are staggered and stacked in parallel in the space, and NO3 <-> is located at the gap of the adjacent CB8. The supramolecular organic framework material disclosed by the invention has high structural stability and cationic framework characteristics, and a rigid framework and a pyridine conjugated system of CB8 endow the material with excellent chemical / irradiation stability, so that the material shows ultrahigh removal rate on ReO4 <-> / TcO4 <-> in extreme environments (strong acid, strong alkali and high irradiation).

The invention discloses a fluorescent probe for targeting mitochondrial ferric ions as well as preparation and application of the fluorescent probe. The fluorescent probe is prepared by reacting cucurbit [7] uril with (E)-4-(4-(dimethylamino) styryl)-1-(3-(triphenylphosphonium) propyl) pyridine-1-onium bromide according to a molar ratio of 1: 1. The fluorescent probe can be used for detecting Fe < 3 + > ions, and has the characteristics of simple preparation method, convenience in operation, high sensitivity, high selectivity, low cost and rapidness in detection.

The invention discloses tea aroma congealed fat balsam which is prepared from the following components in percentage by mass: 15 to 25 percent of wax substance, 60 to 70 percent of oil and grease, 8 to 10.5 percent of essence, 4 to 8 percent of pigment, 0.1 to 2 percent of cyclodextrin sustained-release material, 0.05 to 0.5 percent of preservative and 0.05 to 0.5 percent of antioxidant. According to the balsam, the cucurbituril modified cyclodextrin compound is added as a slow-release material, so that the fragrance retention time of the balsam is longer, and meanwhile, the color is bright and lasting due to the addition of the modified pigment.

The application provides a cucurbituril fluorescent probe and a preparation method and application thereof, and a qualitative and quantitative detection method of melamine, and belongs to the field of substance detection. The application provides a cucurbituril fluorescent probe, which comprises cucurbit[8]uril (CB[8]) and rhodamine, and the rhodamine is included in the cavity of the cucurbit[8]uril. The application contains the rhodamine in the cavity of CB[8] through host-guest non-covalent interaction, and aims at detecting melamine; the probe has high sensitivity, simple operation and the characteristics of rapid detection.

The invention provides a preparation method and application of a cucurbit [6] uril-based supramolecular fluorescent probe material. The fluorescent probe material is experimented in a reaction kettle by adopting a solvothermal synthesis method, and a novel supramolecular assembly fluorescent probe is successfully prepared by taking cucurbit [6] uril (CB [6]) as a main body and 3-amino isonicotinic acid as a structure inducer. The invention has the advantages of simple synthesis method, cheap raw materials, high detection sensitivity, strong anti-interference capability, fast response speed and the like. The supramolecular assembly is of great significance for monitoring water pollution.

The invention discloses an application of fat-soluble ring-opened cucurbituril in specific recognition of organic compounds in organic solvents, the fat-soluble ring-opened cucurbituril is composed of glycoluril tetramer and terminal aromatic ring, the terminal aromatic ring is modified by phosphate side chain, and the terminal aromatic ring has good solubility in various organic solvents; according to the invention, the C-shaped adjustable cavity of the fat-soluble ring-opened cucurbituril is matched with the size of a guest molecule, and is matched with hydrogen bonds, pi-pi interaction and the like, so that efficient molecular recognition of organic matters in an organic solvent is realized; the application of the supramolecular macrocyclic main body in organic solvents is expanded by utilizing fat-soluble ring-opening cucurbituril, and the supramolecular macrocyclic main body is expected to be applied to the fields of medicine, chemical industry, environment and the like.

The invention belongs to the technical field of pharmaceutical chemistry, radiopharmaceutical chemistry and clinical nuclear medicine, and particularly relates to a rotaxane protection-based radioactive halogen labeled compound as well as a preparation method and application thereof. A rotaxane protection-based radioactive halogen labeled compound comprises: a macrocyclic compound having a cavity, the macrocyclic compound comprising one of cyclodextrin, cucurbituril, calixarene and pillararene; a radioactive halogen-labeled compound: the radioactive halogen-labeled position is located in the cavity of the macrocyclic compound; and the end-capping group is positioned at the opening end of the cavity, is connected to two ends of the radioactive halogen-labeled compound and is used for preventing the radioactive halogen-labeled compound from sliding out of the cavity. The rotaxane protection-based radioactive halogen labeled compound provided by the invention has good in-vivo stability, and solves the problem of poor in-vivo stability caused by dissociation of radioactive halogen and a tracer agent in the existing radioactive halogen labeled compound.

A capture complex comprising: a cucurbituril compound having formula (I), wherein n is 5, 6, 7, 8, or 10; and for each cucurbituril unit, R 1 is selected from hydrogen, halogen, optionally substituted -(C1-C6)alkyl, optionally substituted -(C1-C6)haloalkyl, or -OH; and at least one guest molecule, wherein the complex is configured to selectively and reversibly adsorb CO2.

The invention provides a specific probe for detecting perfluorinated compounds in a water body and a detection method thereof, and belongs to the technical field of detection. The probe provided by the invention is a compound formed by cucurbituril and fluorescein; the detection method provided by the invention comprises the following steps: adding a cucurbituril and fluorescein conjugate into a to-be-detected water sample containing the perfluorinated compounds, carrying out equilibrium reaction for a period of time, and then detecting the fluorescence response intensity in the water body so as to quantitatively evaluate the concentration of the specific perfluorinated compounds in the water sample. Compared with the prior art, the probe equipment provided by the invention is small in size, convenient to carry, capable of simultaneously detecting multiple samples and short in reaction time; the whole material of the probe is green and harmless, and chemical agents such as sulfate which easily cause secondary pollution are not used; other impurity removal and enrichment small columns and complex masking agents do not need to be used. In addition, the detection method provided by the invention has a lower detection limit, the sensitivity and convenience of novel perfluorinated compound detection are remarkably improved, and the application range is wider.

The invention belongs to the field of preparation of organic-inorganic hybrid materials, and relates to a preparation method and application of cucurbit [n] uril-gold nanoparticles. Through a simple one-pot synthesis method, chloroauric acid, silver nitrate, a reducing agent and cucurbit [n] uril are added for co-reduction to prepare hollow gold nanoflowers; the gold nanospheres with different sizes are prepared by regulating and controlling the input amount of cucurbit [n] uril. The gold nanoparticle hybrid material shows excellent hydrogen evolution side reaction inhibition capability in the application of electro-catalysis CO2 reduction, and the CO selectivity is obviously improved.

The invention relates to a carbon dioxide separation membrane as well as a preparation method and application thereof. The carbon dioxide separation membrane is prepared from cucurbit [7] uril CB [7] and a dual-network hydrogel polymer matrix, the dual-network hydrogel polymer matrix is formed by carrying out ultraviolet polymerization on a first network monomer and a second network monomer; the first network monomer is 2-acrylamide-2-methyl propane sulfonic acid (AMPS); and the second network monomer is N, N-dimethylacrylamide DMAAm (N, N-dimethylacrylamide). The CB [7] inherent nanopore channel and an additional channel formed by the CB [7] and a polymer chain interface cooperatively construct an efficient CO2 transmission path, and meanwhile, the CO2 permeability and CO2 / CH4 selectivity of the membrane are improved; the separation membrane is simple in preparation method and stable in performance, and has a wide application prospect in the field of carbon dioxide separation such as biogas upgrading.

The invention relates to a supramolecular polypeptide coupled drug as well as a preparation method and application thereof. The supramolecular polypeptide coupled drug comprises a conjugate and an anti-tumor functional unit, wherein the conjugate is formed by sequentially connecting tumor targeting peptide, an enzyme response connexon and cucurbit [7] uril, and the anti-tumor functional unit is loaded onto the cucurbit [7] uril through non-covalent host-guest interaction. In the supramolecular polypeptide coupled drug, an anti-tumor functional unit is loaded on cucurbit [7] uril through non-covalent host-guest interaction, chemical modification of small-molecular drugs in a traditional method is avoided, and cucurbit [7] uril as a carrier can be compatible with various small-molecular hydrophobic drugs; due to the introduction of the tumor targeting peptide, the efficient enrichment of the medicine in tumor tissues can be realized; the unique design of the enzyme response connexon can realize rapid and efficient release of the anti-tumor functional unit in tumor cells.

The invention discloses a cucurbit [5] uril-based framework material as well as a preparation method and application thereof, and belongs to the crossing field of supramolecular chemistry and functional materials. The preparation method comprises the following steps: dissolving potassium salt and cucurbit [5] uril in distilled water; then adding a 3, 3 '-disulfo-[1, 1'-biphenyl]-4, 4 '-dicarboxylic acid ligand, and stirring to obtain a mixed solution; the mixed solution is subjected to a heating reaction, then cooling, filtering and drying are conducted, and the cucurbit [5] uril-based framework material is obtained, and the chemical formula is C396H360K18N180O198S18. Through coordination of an organic ligand containing a sulfonic acid group and metal ions, in combination with non-covalent interaction of hydrogen bonds, Van der Waals force and the like, and through optimal regulation and control of a material ratio, pH and temperature, a honeycomb three-dimensional porous framework structure with high stability is successfully constructed. By utilizing the fluorescence characteristic and the structural characteristic, the efficient recognition of Fe < 3 + > and Pb < 2 + > heavy metal ions and norfloxacin antibiotics in a water body can be realized. The problems that in the prior art, when heavy metal ions and antibiotics in water are detected, operation is tedious, and cost is high are solved.

The application discloses a ternary supramolecular nanoparticle based on a cyclodextrin-opened cucurbituril double host, which is prepared by adding an organic solvent containing a guest hydrophobic pyridine-pyrrole boron derivative and a hydrophobic adamantyl disulfide modified antitumor drug into an aqueous solution of water-soluble cyclodextrin-opened cucurbituril, and then performing ultrasonic treatment, standing, self-assembly through host-guest interaction between molecules, dialysis in the dark, filtration and drying, so as to obtain the ternary supramolecular nanoparticle. The ternary supramolecular nanoparticle has the advantages of mild preparation conditions, simple operation, uniform size and good stability, and can significantly improve the water solubility of the hydrophobic drugs BP and AD-SS-D. The application realizes a significant synergistic effect of photodynamic therapy and chemotherapy, can effectively induce cancer cell apoptosis and inhibit the migration of the cancer cells, and has low toxicity to normal cells, and provides a safe and efficient novel nanoparticle drug delivery platform for multifunctional synergistic antitumor treatment.

The invention provides a phase-change composite material for an oil-based drilling fluid as well as a preparation method and application of the phase-change composite material. The phase-change composite material for the oil-based drilling fluid comprises a phase-change basic substance, an amination modified porous material, modified asphalt and macrocyclic compound molecule cucurbituril [n]. The preparation method comprises the following steps: mixing NaNO3, KNO3 and LiNO3, heating, cooling and crushing to obtain a phase change basic substance; carrying out modification treatment on expanded graphite and / or montmorillonite to obtain an amination modified porous material; the preparation method comprises the following steps: adding macrocyclic compound molecule cucurbituril [n] into an aqueous solution of an amination modified porous material to obtain a first suspension, preparing a phase change basic substance into a solution, adding the solution into the first suspension to obtain a second suspension, and calcining the second suspension to obtain a first phase change composite material; and dissolving the modified asphalt in petroleum ether to obtain a third suspension, dispersing the first phase-change composite material in the third suspension, freezing, performing vacuum filtration, and drying to obtain the phase-change composite material for the oil-based drilling fluid.

The disclosures herein relate to cucurbituril compounds and methods and compositions for reducing the amount of a toxin in a patient by administering to the patient an effective amount of the cucurbituril compound. Also provided are methods and compositions for preventing or treating an overdose from a toxin that has been ingested by a patient.

The application discloses a phenylpyridine salt derivative G, a room-temperature phosphorescent supramolecular gel and a preparation method and application thereof. The preparation method of the room-temperature phosphorescent supramolecular gel comprises the following steps: taking Cucurbit[8]uril (CB[8]) as a host, a phenylpyridine salt derivative containing a urea-based pyrimidone (UPy) quadruple hydrogen bond site as a guest, self-assembling a supramolecular assembly phosphorescent material in a 1:2 molar ratio in an aqueous solution; and introducing the assembly into a polyvinyl alcohol (PVA) matrix to obtain a humidity-responsive room-temperature phosphorescent supramolecular gel. The assembly and the supramolecular gel both present phosphorescent emission at room temperature. Under the dual constraints of macrocycle limitation and multiple hydrogen bonds on the phosphorescent molecules, the phosphorescent intensity and lifetime of the supramolecular gel are greatly enhanced compared with the assembly. Meanwhile, the phosphorescent intensity and the light-emitting color of the supramolecular gel change with the water content of the gel or the environmental humidity, realizing a visual response from green to blue, and the supramolecular gel can be applied to humidity sensing, anti-counterfeiting and information encryption.

The invention provides a well wall stabilizer for drilling fluid as well as a preparation method and application thereof. The invention provides a well wall stabilizer for drilling fluid. The raw materials of the stabilizer comprise cucurbituril and cyclodextrin, the cucurbituril is an annular cage compound formed by connecting 2n methylene bridges with n glycolurils, and n is selected from 5-20. Wherein cucurbituril is called Q [n] for short. The invention provides a preparation method of a stabilizer. The preparation method of the stabilizer comprises the step of mixing water, cucurbituril, an alkali supply agent, cyclodextrin, a surfactant, organic silanol and a salt bridging agent to obtain the stabilizer. The invention provides the drilling fluid well wall stabilizer prepared from cucurbituril and cyclodextrin, the prepared drilling fluid well wall stabilizer is used in drilling fluid, the rolling dispersion recovery rate of the drilling fluid can reach 65% or above, and the membrane efficiency of the drilling fluid can reach 17% or above.

The application belongs to the technical field of biological medical materials and radiation medicine, and particularly relates to a bismuth-chloride cluster-cucurbit[6]uril-based supramolecular framework material and a preparation method and application thereof. 10 ] 4‑ Anion clusters) as a building unit and cucurbit[6]uril (CB[6]) are fused and co-constructed through host-guest interaction to prepare a supramolecular framework material. The structure and physicochemical properties of the compound are determined through single crystal structure testing and various spectroscopic characterizations, and the application of the compound as a radiotherapy sensitizer is studied. The results of in-vitro and in-vivo biological experiments prove that the material can be used for inhibiting the growth of various cancer cells by significantly sensitizing radiotherapy.

The invention relates to the technical field of welding, and particularly discloses a water-soluble soldering flux and a preparation method thereof. The water-soluble soldering flux comprises the following raw materials in parts by weight: 6-12 parts of a borate covalent activator; 3 to 8 parts of cucurbituril hydrate; 0.01 to 2 parts of a corrosion inhibitor; 1-3 parts of a modified graphene quantum dot solution; 1-5 parts of a cyclic ether solvent; 0.5 to 2 parts of a metal organic framework material containing sulfydryl; 68 to 88.5 parts of deionized water; the modified graphene quantum dot solution is obtained by modifying graphene quantum dots through dioctadecyl dimethyl ammonium chloride. According to the soldering flux, the water-soluble soldering flux is combined with the cyclic ether solvent, so that the problem of later-stage water residue after decomposition and volatilization of an activating agent in the early stage of welding can be effectively solved, the problems of pseudo soldering, bubble defects and the like of welding spots are reduced, and the strength and reliability of the welding spots are effectively improved.

The application relates to the field of welding technology, and particularly discloses a water-soluble flux and a preparation method thereof. The water-soluble flux comprises the following raw materials in parts by weight: 6-12 parts of a borate ester covalent activator; 3-8 parts of cucurbituril hydrate; 0.01-2 parts of an inhibitor; 1-3 parts of a modified graphene quantum dot solution; 1-5 parts of a cyclic ether solvent; 0.5-2 parts of a metal-organic framework material containing mercapto groups; and 68-88.5 parts of deionized water. The modified graphene quantum dot solution is obtained by modifying graphene quantum dots with dioctadecyldimethylammonium chloride. The flux of the application can effectively solve the problem of water residue in the later stage after the activator is decomposed and volatilized in the early stage of welding by combining the water-soluble flux with the cyclic ether solvent, thereby reducing the problems of virtual welding, bubble defects and the like of the welding points, and effectively improving the strength and reliability of the welding points.

The invention relates to a medicinal salt of a cucurbituril derivative, and a crystal form and application thereof. Specifically, the invention provides pharmaceutically acceptable salts, crystal forms and preparation methods of the compound shown in the formula 1, and the corresponding salts have good stability and can be better used for clinical treatment.

The invention relates to the technical field of biological analysis and detection, in particular to a cucurbituril derivative for drug detection, a preparation method and application of the cucurbituril derivative, a detection probe containing the cucurbituril derivative, a drug for treating acute poisoning of drugs and a drug detection method. On the basis of retaining the original supramolecular recognition characteristic of cucurbituril, the derivative introduces an o-cyanobenzaldehyde (CNBA) functional group; the obtained compound can realize high-efficiency covalent capture on common drugs and metabolites thereof (such as primary amine groups in molecules of methylamphetamine and metabolites thereof, 3, 4-methylenedioxy methylamphetamine, ketamine and metabolites thereof, fluazinone and metabolites thereof, phencyclohexylpiperidine, cathinone and the like); therefore, rapid and high-sensitivity visual detection of the target object is realized, and the method can be used for antagonistic treatment of acute poisoning caused by related drugs and metabolites.

The application belongs to the technical field of oil exploitation, and relates to a secondary cross-linking polymer gel system, in particular to a secondary cross-linking cucurbituril hybrid polymer gel system for preventing channeling of a tight oil reservoir. The cucurbituril hybrid polymer comprises the following raw materials: acrylamide, cucurbituril acrylate, N-vinyl imidazole and 2-acrylamido-dodecyl sulfonic acid. The cucurbituril hybrid polymer can be made into a polymer gel, and the polymer gel has good effects of reducing filtration loss and slowing down the damage of filtration loss liquid to a matrix. Then, the primary weak cross-linking gel enters the deep part of the oil reservoir, and slowly forms the secondary cross-linking gel, and the secondary cross-linking gel has good stability under high-temperature and high-salt conditions.

An approach using supramolecular gated self-immolative chemistry for the control of covalent bond scission through noncovalent host-guest interactions via an ethylenediamine-based self-immolative entity (SIE) in combination with a bioorthogonal cucurbituril-meditated host-guest system. The entity engages in supramolecular complexation with cucurbit[7]uril (CB) host molecules, which effectively masks its reactivity and prevents premature initiation of the self-immolative cyclization–elimination cascade. The introduction of a competitive guest molecule, such as 1-adamantylamine, triggers the removal of the supramolecular CB capping group from the CB-SIE complex, revealing the nascent self-immolative structure. This decomplexation initiates a rapid cyclization-elimination cascade that releases the loaded cargo molecules from the complex

The utility model discloses an ethanol washing device for preparing a cucurbituril compound, which comprises a conical funnel, a dropping pipe arranged on the lower side of the conical funnel, a beaker arranged on the outer part of the lower side of the dropping pipe, and filter paper arranged on the inner part of the upper side of the conical funnel, a sealing sleeve is arranged at the lower side position of the dripping pipe, a connecting pipe is arranged at the right upper side position of the dripping pipe, a sealing plug is arranged at the inner side position of the connecting pipe, and the operation of sealing and compacting the filter paper effectively blocks a hole between the filter paper and the inner wall of the conical funnel; and the gap possibly exists at the communication part of the dripping pipe and the conical funnel. And for the washing process of the cucurbituril compound, only liquid effectively filtered by the filter paper can enter the dripping pipe, so that the filtering integrity is greatly improved. The impurities are intercepted on the filter paper to the greatest extent, so that the purity of the washed cucurbituril compound is ensured.

The invention discloses an S-doped Ru2P / Ru difunctional electrocatalyst derived from cucurbituril [6] as well as a preparation method and application of the S-doped Ru2P / Ru difunctional electrocatalyst. Belongs to the technical field of HER catalysts. The invention relates to a cucurbituril [6]-derived S-doped Ru2P / Ru bifunctional electrocatalyst, which is a bifunctional electrocatalyst Ru2P / Ru-S-CBC obtained by taking cucurbituril [6] as a carrier, introducing RuCl3, 4, 4 '-sulfodiphenol and hexachlorocyclotriphosphazene as construction units, growing a poly (cyclotriphosphazene-co-4, 4'-sulfodiphenol) polymer coating on the surface of the cucurbituril [6] in situ and carrying out pyrolysis. The electrocatalyst prepared by the invention shows excellent electrocatalytic HER and hydrazine oxidation activity in an alkaline electrolyte, provides a premise for replacing an oxygen evolution reaction with a HzOR reaction, and also realizes low-energy-consumption and high-stability electrochemical hydrogen production.

The utility model discloses a cucurbituril adsorption device based on solid state acetylene adsorption, which comprises a box body, the box body introduces mixed gas to the internal position through a gas inlet at the left end position, and the box body discharges the adsorbed gas through a gas outlet at the right end position. A plurality of insertion holes are formed in the front end position of the box body, threaded holes are formed in the rear end positions of the insertion holes, rollers are connected to the inner position of the box body in a sleeved mode, when flowing air enters the inner position of the box body, the rollers rotate when the flowing air makes contact with a fixing plate, the rollers rotate with a rotating shaft as the circle center shaft, and the rotating shaft is driven by the rotating shaft to rotate. The circulation direction of gas is disordered through the fixing plate by rotation of the roller, so that the gas is uniformly distributed when entering the inner position of the drawer box, the gas is prevented from being concentrated in a certain part, the cucurbituril filler can be fully utilized, and the overall adsorption efficiency is improved.

This invention discloses a method for rapid separation and detection of berberine and epiberberine based on ion mobility mass spectrometry. The specific steps are as follows: berberine and epiberberine in the sample to be tested are mixed with cucurbituril [8] and magnesium ions to form a ternary complex; the obtained ternary complex is ionized using an electrospray ionization source; different complex ions are separated using nitrogen as the drift gas in the ion mobility mode; the separated ions are detected by tandem mass spectrometry; qualitative analysis of berberine and epiberberine is achieved based on the triple information of characteristic mass-to-charge ratio, mobility value and collision cross section; and quantitative analysis of berberine and epiberberine is achieved by external standard method or internal standard method. This invention uses cucurbituril [8] as a chiral auxiliary reagent and magnesium ions as a metal complexing agent, and uses ion mobility-mass spectrometry to distinguish berberine isomers, which can rapidly, with high resolution and high accuracy, separate and detect berberine and epiberberine.

The disclosures herein relate to cucurbituril compounds and methods and compositions for reducing the amount of a toxin in a patient by administering to the patient an effective amount of the cucurbituril compound. Also provided are methods and compositions for preventing or treating an overdose from a toxin that has been ingested by a patient.