30 results about "Cryptand" patented technology

The invention discloses alkali-sensitive ring opening cucurbituril. A structural formula of the alkali-sensitive ring opening cucurbituril is shown. The alkali-sensitive ring opening cucurbituril hasthe advantages that the alkali-sensitive ring opening cucurbituril can be used as a supermolecular medicine carrier and is provided with large ring cryptand with inner cavities, the ring rigidity of large rings can be reduced by means of ring opening, and accordingly the alkali-sensitive ring opening cucurbituril is extremely high in host-guest bonding capacity; the alkali-sensitive ring opening cucurbituril is excellent in alkali sensitivity, contains carboxylic acid groups and can be used as the medicine carrier to be widely applied to medicine delivery paths, and the water solubility and the stability of insoluble medicines can be greatly improved; the alkali-sensitive ring opening cucurbituril can be used as an alkali-sensitive carrier, medicines can be released in alkaline environments such as small intestines in human bodies, accordingly, effects of releasing the medicines in a sustained and controlled manner can be realized, and irritation of the medicines on gastric mucosas canbe prevented.

The invention relates to the technical field of lithium battery ternary electrode material system electrolyte solution, and in particular, relates to a high-nickel ternary system lithium ion power battery electrolyte solution. The high-nickel ternary system lithium ion power battery electrolyte solution comprises an organic solvent, an electrolyte lithium salt, a functional additive and a flame retardant additive; the functional additive is at least one of O-succinimide-1,3-dimethylpropylurea hexafluorophosphate or [2.2.2]-cryptand and potassium monohexadecyl phosphate; the flame retardant additive is diglycol oxycyclophosphamide; with the total mass of the electrolyte solution as the standard, the addition amount of the functional additive is 0.5-1.5%, and the addition amount of the flameretardant additive is 1-3.5%. The high-nickel ternary system lithium ion power battery electrolyte solution has the advantages of high electrical conductivity and good battery cycling performance.

The present invention relates to π-conjugated fluoroionophores, methods for their preparation, and their use and a method for determining an alkali ion.

Fluoroionophoric compounds of the general formula I are described

Ionophore-π-Linker-Fluorophore  (I)

wherein

the Ionophore is an anilino containing crown ether or cryptand with one or more anilino donor moieties as electron donors, forming a stable complex with an alkali metal ion

the π-Linker is an aromatic or heteroaromatic conjugative linking moiety, and the Fluorophore is an electron acceptor moiety.

Variation of the ionophoric unit offers a broad spectrum of detectable K⁺ and Na⁺-concentrations, ranging from high concentration around 800 mM down to very low concentrations around 3 mM.

The fluoroionophores have great potential for application in fluorescent optode system based blood analyzing equipment for methods and kits for the determination of K⁺ and Na⁺ concentrations in biological systems, either in vitro or in vivo, using embodiments of the disclosed fluoroionophores.

The invention relates to a complete chemical synthesis method for realizing lasso polypeptide and analogues thereof through the support of multiple anchor points. The support of multiple anchor points is preferably selected from a cryptand-ion liquid compound. The trend of a polypeptide chain is controlled through the limitation and guiding of the connecting point, so as to form a topological lasso structure. The synthesis method provided by the invention is easily automated; the marketing of the lasso polypeptide drugs becomes possible; the complete chemical synthesis of the lasso polypeptide and analogues thereof is firstly realized; the domestic and overseas blank of the chemical synthesis of the lasso polypeptide at present can be filled up; the method has significance in chemically synthesizing the polypeptide and researching and developing the polypeptide drug.

The invention relates to a [2+4]N heterocyclic cryptand and a preparation method thereof, for a example, reactant dibromobutane. The compound has the advantages that the synthesis method is simple, coordination sites are multiple, the cavity size is adjustable, and the like; and the compound has higher potential application values in the aspects of complex synthesis and molecule recognition. The invention relates to preparation of [2+4]N heterocyclic cryptand and can extend to preparation of related derivatives of the [2+4]N heterocyclic cryptand. The preparation method comprises the following three steps: by taking 1,4-dibromobutane as a raw material, carrying out alkyl substitution reaction, synthesis of Schiff base, and reduction by using a simple and economic method through rotary evaporation, recrystallization and other technologies, so as to prepare pure [2+4]N heterocyclic cryptand. The excellent coordination capacity of the N heterocyclic cryptand is primarily determined, therefore, the [2+4]N heterocyclic cryptand has higher potential application values in the aspect of molecule or ion recognition.

The invention relates to an anion exchange membrane loaded with a cryptand unit and a preparation method of the anion exchange membrane and belongs to the technical field of anion exchange membranes for fuel cells. The anion exchange membrane is a polyphosphazene material containing the cryptand unit and is of a structure shown as a formula (1) or a formula (2). The anion exchange membrane loadedwith the cryptand unit is obtained by reacting [2,2,2]-cryptand having an alkylhydroxyl branch with polydichlorophosphazene to obtain the polyphosphazene material loaded with the cryptand unit and finally conducting film formation in a mold and ion exchange. The provided anion exchange membrane loaded with cryptand polyphosphazene does not involve groups such as quaternary phosphonium and quaternary ammonium which are used by most anion exchange membranes, so that the problem of degradation in a strong alkali environment is avoided, and the anion exchange membrane has the advantages of high ion conductivity and good alkali stability.

The invention discloses an electrolyte based on organic sulfur redox couple. The electrolyte is characterized by comprising the organic sulfur redox couple and crown ether or cryptand. A reduction state component of the organic sulfur redox couple is organic sulfur salt, and an oxidation state component of the organic sulfur redox couple is organic disulphide corresponding to the organic sulfur salt. The invention further discloses a preparation method of the electrolyte, and application of the electrolyte in preparing of a solar cell or a fuel cell or a lithium ion cell or a super capacitor. A metal cation formed by the crown ether or the cryptand in a complexing mode is adopted by the electrolyte to serve as a positive ion of the reduction state component of the organic sulfur redox couple, and activity, stability and electrochemical reversibility of a redox reaction are good. Diffusion speed is high, ion transport in the electrolyte is utilized, and the method is simple in synthesis preparation process and low in cost, and has good application prospects in dye sensitization nano solar cells.

The invention discloses a rare earth dysprosium cryptand fluorescent complex and a preparation method thereof. The complex has a chemical structural formula as shown in a formula (I) in the description, wherein the chemical structural formula of the complex MO is as shown in a formula (II) in the description. The molar extinction coefficient of the rare earth dysprosium cryptand fluorescent complex provided by the invention can be increased by about 4 times (80000M<-1>cm<-1>) compared with that of the existing product, the rare earth dysprosium cryptand fluorescent complex is suitable for being used as a fluorescent dye molecule to mark nucleic acid, protein and other biomolecules, and the detection sensitivity and accuracy can be improved; and the preparation method disclosed by the invention is relatively simple in process and high in product yield, and has a very good application prospect.

The invention discloses a preparation method of a nucleophilic phosphorene compound, and belongs to the field of chemical medicine preparation. Phosphorene (RP) is a monovalent phosphorus compound with a six-electron structure. As a phosphorus analogue of carbene, phosphorene is always an important organophosphorus reagent. Due to the instability of free phosphorene, chemists synthesize Lewis acidand Lewis alkali complexes of phosphorene by utilizing the dual characteristics of phosphorene molecules. The two types of complexed phosphorene are higher in stability and easier to regulate and control in reactivity, especially nucleophilic phosphorene coordinated by Lewis alkali. According to the invention, the nucleophilic phosphorene compound can be obtained with high yield by using the hydride of precursor phosphorus to react with alkali at low temperature in the presence of crown ether/cryptand. The obtained target product can be used as a catalyst for various catalytic reactions.

A purification method is disclosed for a predetermined water-insoluble extractant present in a liquid phase composition that additionally contains one or more additional extractants, synthesis reaction starting materials, and reaction byproducts dissolved as solutes in an organic diluent. An ion-containing compound is admixed with the composition to form an extractant/ion complex in the organic diluent phase that has an affinity for a new phase that is greater than the affinity for the first-named phase. The predetermined extractant/ion complex is separated from the diluent by using the new phase affinity, and the extractant/ion complex is preferably although not necessarily recovered. The extractant/ion complex is separated into extractant and ion. The extractant is recovered. Exemplary extractants include polyethers, crown ethers, crown thioethers, calixarenes, polyamines, cryptands, porphyrins and the like.

A photochemical hole burning medium is composed of a material in which a rare earth complex and a reducing agent is dispersed in a solid matrix. The rare earth complex may be at least one complex selected from the group consisting of a europium (III) crown ether complex, a europium (III) polyether complex, and a europium (III) cryptand complex.

The invention discloses a potassium ion detection kit and relates to the technical field of biology. The potassium ion detection kit comprises a reagent R1 and a reagent R2, wherein the reagent R1 isprepared from the following components of a buffer solution, a cryptand, phosphoenolpyruvate, adenosine diphosphate, alpha-ketoglutaric acid, reductive coenzyme I, magnesium chloride, propylene glycol-monomethyl ether and 4-methyl phenylboric acid; and the reagent R2 is prepared from the following components of the buffer solution, glutamate dehydrogenase, pyruvate kinase, lactic dehydrogenase, albumin bovine serum, calcium chloride and the propylene glycol-monomethyl ether. According to the potassium ion detection kit, the stability of the potassium ion detection kit can be improved on the premise of not affecting the accuracy and the analysis sensitivity.