9 results about "Cucurbituril" patented technology

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 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 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.

The application discloses a preparation method of cucurbituril-based rare earth supramolecular hydrogel, and belongs to the technical field of chemical synthesis. The method utilizes the synergistic effect of 3-amino 2,7-naphthalene disulfonic acid monosodium salt organic ligand and rare earth metal ions, and designs and synthesizes 13 kinds of supramolecular hydrogels with similar properties. The preparation method of the cucurbituril-based rare earth supramolecular hydrogel has the characteristics of simple operation, low energy consumption and short synthesis time. By using the organic ligand 3-amino 2,7-naphthalene disulfonic acid monosodium salt, the ordered arrangement of the five-membered cucurbituril is promoted, the system plays a double role of 'counter anion' and 'bridging', and the amino group in the ligand points to the straight channel, so that a large number of water molecules are connected in the one-dimensional channel through the hydrogen bond effect between the amino groups on the 3-amino 2,7-naphthalene disulfonic acid monosodium salt, and a final gel structure is formed. Due to the existence of non-covalent connection, the foundation is laid for the application in the aspects of stimulus response and self-healing ability of substances.

This invention discloses a method for preparing a seven-membered cucurbita supramolecular cocrystal solvent and its application. The invention uses a seven-membered cucurbita as a hydrogen bond acceptor and malic acid as a hydrogen bond donor to prepare a seven-membered cucurbita supramolecular cocrystal solvent. This solvent can be used to extract camptothecin from Camptotheca acuminata fruit, and the extracted camptothecin can be determined by HPLC. This seven-membered cucurbita supramolecular cocrystal solvent is a green extraction solvent that does not use organic solvents when extracting active ingredients from plants, while the extracted active ingredients retain their intrinsic activity. The preparation method is simple, the extraction efficiency is high, and efficient, green extraction is achieved.

Disclosure herein relates to, inter alia, inventive cucurbituril compounds and novel methods of preparing thereof using a glycoluril compound having the formula (II), a glycoluril compound having the formula (II′), a glycoluril bis-ether of formula (III), a glycoluril dimer of formula (IV), a glycoluril tetramer compound of formula (V), and Sodium 4,4′-(1,4-phenylenebis(oxy))bis(butane-1-sulfonate, which result in significantly improved purity and yield of the intermediates and of the final products.

A kind of cucurbituril [7]-cyclodextrin cascade assembly supramolecular system for specifically detecting trivalent gold and preparation method.The present application utilizes coumarin modified diphenyl-24 crown-8 guest (G), CB [7] and sulfobutyl-β-cyclodextrin (SBE-β-CD) co-assembly, constructs the first CB [7] mediated molecular slip, cascade assembly limit pseudo [5] wheel supramolecular complex (system) in aqueous solution.The present application is based on the host-guest interaction and electrostatic interaction of G, CB [7] and SBE-β-CD, successfully prepared the supramolecular complex with green fluorescence, morphology adjustable cascade assembly fluorescence enhancement.Au 3+ And crown ether group, the combination of which can be used as an excellent gold ion special probe on solution and solid PVA film.

The invention features a hot melt composition including from 5% by weight to 50% by weight of a thermoplastic polymer, from 10% by weight to 70% by weight of a tackifying agent, from 5% by weight to 45% by weight of a plasticizer, and from 0.5% by weight to 10% by weight of cucurbituril.