108 results about "Squaric acid" patented technology

There is disclosed squaraine compounds of formula I:

wherein each of Y₁ and Y₂ is independently chosen from an optionally substituted amino group and an optionally substituted aryl group. Also described are organic optoelectronic devices comprising a Donor-Acceptor heterojunction that is formed from one or more of the squaraine compounds. A method of making the disclosed device, which may include one or more sublimation step for depositing said squaraine compound, is also disclosed.

The present invention addresses the problem of providing an optical filter having exceptional transmittance characteristics in which the drawbacks of conventional near-infrared-cutting filters and other optical filters are overcome, and light scattering is minimal even during light absorption. This optical filter is characterized by containing a squarylium compound and a compound for absorbing or quenching fluorescence. This optical filter preferably contains a near-infrared absorbing dye that contains a squarylium compound (A), and at least one compound (B) selected from the group consisting of a phthalocyanine compound (B-1), and a cyanine compound (B-2).

The invention discloses a hypochlorite ion fluorescence probe, and a synthetic method and an application thereof. The synthetic method comprises the following steps: 1, adding 3,4-dihydroxy-3-cyclobutene-1,2-dione (squaric acid) and 3-N,N-diethylamino phenol to a solvent which is a mixed solution comprising toluene and n-butanol, carrying out a heating reflux reaction for 8-12h, filtering, washing the obtained reaction precipitate with methanol, and drying to obtain an intermediate squaric acid dye, wherein the molar ratio of 3,4-dihydroxy-3-cyclobutene-1,2-dione (squaric acid) to 3-N,N-diethylamino phenol is 1:1.8-2.2; and 2, carrying out the heating reflux reaction of the squaric acid dye and a Lawesson reagent in a solvent toluene under the protection of nitrogen for 6-24h, carrying out reduced pressure distillation to remove the solvent, and carrying out silica gel column chromatography to obtain the fluorescence probe. The probe has a simple synthetic process, has a very high selectivity and a very high sensitivity to hypochlorite ions, and has a good application prospect.

The invention discloses a mono-sulfo squarylium dye fluorescence probe for detecting mercury ions and a preparation method thereof as well as application thereof. The preparation method comprises the following steps of: proportionally mixing oxo squarylium essence and a Lawesson's reagent, dissolving the mixture in methylbenzene, performing backflow reaction for 1.5-4 hours under the protection of inert gas after the mixture is dissolved, cooling the reaction mixture to room temperature, decompressing and distilling the reaction mixture to remove a solvent and obtain a rough product; and performing silica gel column chromatography separation on the rough product to obtain the mono-sulfo squarylium dye fluorescence probe. The mono-sulfo squarylium dye fluorescence probe provided by the invention is high in stability and can quickly, sensitively and specially detect low-concentration mercury ions; a synthesis method is simple; and the production cost is low.

The invention relates to water-soluble near infrared luminescent quinoline squaraine dye, of which the molecular structural general formula is shown on the figure. The method for preparing the water-soluble near infrared luminescent quinoline squaraine dye comprises that: firstly, 2-methylquinoline is subjected to bromination, sulfonation, nitration and acylation and reacts with acetonitrile and iodo-acid or iodo-ester to generate quinoline quaternary ammonium salt; and secondly, the quinoline quaternary ammonium salt is mixed with squaric acid, and the mixture is subjected to azeotropic distillation and dehydration, vacuum distillation and silica gel column chromatography and recrystallization through ethanol to obtain the water-soluble quinoline squaraine dye. The dye is applied in the fields of development of novel medicines, fluorescence labeling, probes, biological immunoassay, biological immunodetection and the like. The fluorescence-emission wavelength of the water-soluble quinoline squaraine dye is near infrared, so that the water-soluble quinoline squaraine dye has superior penetrability on environments and biological tissues and reduces self absorption and background absorption, and the sensitivity of fluorescence analysis can reach 10<-10> mol/L. The preparation method is simple and easy, has low cost and good economic benefit and is suitable for industrialized production.

The invention relates to a squarylium type chemical sensor for colorimetric identification of a copper ion and a preparation method thereof, belonging to the field of chemical analysis and testing. The squarylium type chemical sensor is provided with a symmetric 2, 3, 3-trimethyl-indole squarylium compound and is prepared by the following steps of: mixing a 2, 3, 3-trimethyl-indole ring compound and squaric acid with a molar ratio of 2:1, adding mixture into a three-necked flask, adding mixed solvent of toluene and n-butanol with a volume ratio of 1:1, performing heating, mixing and back-flowing for 2-24 hours, and separating water produced in reaction with a water separator; stopping heating, cooling to the room temperature, depressurizing and evaporating to remove part of the solvent, and filtering to obtain green solid; and repeatedly washing the obtained green solid with ethyl acetate, drying at 60 DEG C, and recrystallizing with ethanol solvent to obtain pure green crystals. When the squarylium compound is applied in identification of the copper ions, the color can change in addition to changes in the absorption spectrum, the characteristics are obvious, and detection of the copper ions can be facilitated.

An organic photosensitive optoelectronic device comprising at least one Donor-Acceptor heterojunction formed from a squaraine compound of formula I:

wherein each of Ar¹ and Ar² is independently chosen from an optionally substituted aromatic group. The organic optoelectronic device described herein may also comprise a Donor-Acceptor heterojunction that is formed from at least two different squaraine compounds. A method of making the disclosed device, which may include at least one sublimation step for depositing the squaraine compound, is also disclosed.

The invention discloses a metal-organic framework material for separating xenon and krypton and a method for separating xenon and krypton. The metal-organic framework material is good in stability andhigh in adsorptive separation selectivity, the preparation method is simple, and the preparation cost is low. The general structural formula of the metal-organic framework material is [M(C4O4(OH)2).3H2O or [M(C4O4)].2.5H2O, wherein M is metal ions, and transition metal ions or alkaline earth metal ions and squaric acid form a 3D network structure through coordinate bonds or intermolecular actingforce. A preparation method comprises the steps as follows: (1) inorganic salt, squaric acid, alkali and deionized water are mixed in proportion, and the obtained mixture is put in a reactor for a hydrothermal reaction after being stirred to be dissolved, wherein the inorganic salt comprises chlorate, nitrate, acetate, carbonate, sulfate or perchlorate of metal ions; (2) after the hydrothermal reaction, a product is washed with deionized water multiple times, vacuum drying is performed, and the metal-organic framework material is obtained. The metal-organic framework material is used as an adsorbent to perform adsorptive separation on mixed gas containing xenon and krypton.

The present invention relates to a new kind of infrared absorbing squaraine cyanine dye as one new kind of compound containing quinoxalinone heterocycle in its structure. It has absorption wavelength of 700-1100 nm. It is prepared through condensation of squaric acid and quinoxalinone as precursor compound. It may be used in laser protection, fluorescent labeling, photoelectronic functional material and other fields.

A soluble fluorescent dicyan dye is prepared by condensing compound (2) with compound (3), by squaric acid and inducing squaric acid bridged ring into linear conjugate polymethin chain. In the structural formula, X is S, CH2 or C(CH3)2; R1 and R2 are selected from any kind of C1-C6 alkyl or (CH2)kSO3H separately; k=1-6; R3 is H or C1-C6 alkyl; R4 is H or CH2COOH; n is 1,2 or 3. It has excellent light stability.

The invention provides benzpyrole squaric acid cyanine dye. The general formula of the structure of the benzpyrole squaric acid cyanine dye is shown in the description, wherein X is one of Br, Cl and I, and R is one of the following structures shown in the description. The benzpyrole squaric acid cyanine dye provided by the invention has good stability and large absorption strength, can be applied in matching reagents of a 5-classified hematology analyzer to be used as dye of nucleated red blood cells, and can also be applied to fluorescent marks and other life science research fields.

The invention discloses a fluorescent dye having phenazine condensed structure, of which the structural formula is represented as one of the formulas (I) to (IV). The fluorescent dye having phenazinecondensed structure is prepared through steps of: reactions of cyclohexanedione condensation, sodium borohydride reduction, Vilsmeier formylation and the like are carried out to obtain an intermediatecompound; and then reactions with 4-subsituent amino-2-nitrosophenol, benzophenone acid, trans-4-subsituent amino-salicylaldehyde and the like compounds are carried out. Compared with classical fluorescent dyes (e.g. rhodamine, oxazine, squaric acid, anthocyanin dyes), the fluorescent dye in the invention has high photo-stability, is near-infrared in fluorescence emission wavelength of 635-829 nm, and has large Stokes shift capable of reaching 122 nm and high fluorescence quantum yield capable of reaching 0.43. The fluorescent dye can be applied to fields such as luminescent materials, bio-fluorescence probes, multicolor fluorescence imaging, etc.

The invention refers to a polyalkyl fluorene conjugated polymer whose construction consists of 9,9' double substituted fluorene construction unit and diaryl substituted cubic acid or maleic amino one. The conjugated polymer is used as the luminescent material and can be applicable to make electroluminescent devices.

The present invention relates to amphiphilic squaraine dyes of the general formula (1) as shown below Formula (1) wherein, R¹=—(CH₂—CH₂—O)_n—CH₃, n=4-8, or —(CH₂)_n—CO₂X, n=3-6, X=H, succinamide and R²=—CH₃ or —(CH₂—CH₂—O)_n—CH₃, n=4-8 and pharmaceutically acceptable derivatives thereof, for use as near infrared fluorescence probes in photodynamic diagnostic and biological, biochemical and industrial applications.

An active material for organic image sensors, where the active material is a squaraine-based active material or a thiophene-based active material. A photoelectric conversion layer containing the active material, which is a squaraine-based active material or a thiophene-based active material. An organic image sensor containing the photoelectric conversion layer containing the active material.

The invention discloses a preparation method for a porous carbon material electrode for a counter electrode of a dye-sensitized solar cell. A porous carbon counter electrode which is prepared from a metal organic framework coordination compound under different carbonization conditions, and a squaric acid organic dye-sensitized TiO<2> porous thin film are assembled together; and the middle part is poured with a redox electrolyte to obtain the dye-sensitized solar cell taking the porous carbon material as the counter electrode. Photoelectric conversion efficiency of different cells can be obtained from different carbonization conditions, so that the photoelectric performance of the dye-sensitized solar cell can be optimized consequently; and meanwhile, the preparation method has the advantages of simple process, low cost, large area, no pollution and the like, so that the application of the dye-sensitized solar cell can be facilitated.

The invention relates to mulin acetate comprising substituted squaric acid, and an application thereof. The invention belongs to the field of chemical medicine. A mulin acetate compound comprising substituted squaric acid, a pharmaceutically acceptable salt thereof, a solvate thereof, an isomer thereof, a prodrug thereof, or a prodrug of salt thereof have a structural general formula represented by the formula (I). The MIC values of the compound against staphylococcus aureus and strepococcus equi are higher by 20-30 times than the antibacterial effect of a reference product of tiamulin in market. The mulin acetate comprising substituted squaric acid is a high-efficiency antibacterial medicine.

The invention relates to a squaric acid polymer, and particularly relates to a poly-squaric acid conjugated polymer; the polymer has good dissolving stability, good matching between an absorption spectrum and a solar spectrum, and is applicable to polymer polymer solar cells. The invention also relates to a preparation method of the poly-squaric acid conjugated polymer and an application of the polymer. The technical solution schemes of the invention are that: 1) a large aromatic side chain, such as alkoxyphenyl, alkoxyphenyl methylene, alkoxybiphenyl methylene, and the like, is introduced onnitrogen atoms of pyrrole so as to reduce the accumulation between polymer molecular chains, to increase the dissolving stability of the polymer, and to improve the processing performance; 2) mesogenic fragments are introduced on nitrogen atoms of pyrrole so as to increase the local orderliness of the polymer.

The invention relates to the field of preparation of a UTSA-280 adsorbent material, particularly relates a method for synthesizing and forming UTSA-280 adsorbent materials on a large scale, and particularly relates to a method for preparing UTSA-280 MOFs materials in batches by regulating reaction raw materials and regulators. The materials are subjected to molding granulation by additives. The method comprises the following steps: adding NH3*H2O into a squaric acid supersaturated aqueous solution to promote dissolution of squaric acid, adding a calcium nitrate aqueous solution into the formedsquaric acid aqueous solution, maintaining stirring in the process of adding the calcium nitrate aqueous solution, and obtaining a strip-shaped UTSA-280 crystal with high crystallization degree at room temperature. Compared with addition of the original NaOH, the rate of promoting dissolution of the squaric acid by the NH3*H2O is higher, the adding amount is convenient and accurate to control, and the method is a method capable of synthesizing the UTSA-280 with high crystallization degree efficiently and rapidly.

The present invention provides filters for an electronic display device comprising a squarylium compound represented by the general formula (I): wherein X represents a nitrogen atom or an oxygen atom; Q represents a carbon atom, a nitrogen atom, an oxygen atom or a sulfur atom; and R1, R2, R3, R4, R5, R6 and m are as defined in the specification. The filters for an electronic display device of the present invention can selectively shield the light having such a wavelength that reduces the color purity, and thereby can provide clear images.