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160results about How to "High molar extinction coefficient" patented technology
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Dimer dye of sanjie-chuanjing in use for DVD-R atn high speed, and synthesis method
InactiveCN1563201AHigh molar extinction coefficientIncrease burning speedMethine/polymethine dyesRecord carrier materialsOrganic solventOrganic chemistry
A trimethenyl cream dyestuff binary compound used for high power speed DVD-R light disc and its preparing method are disclosed by the present invention. the solubility of abovesaid binary compound in organic solvent is excellent and mole extinction coefficient is big so it can raise writing in speed of light disc when it is used as recording media of DVD-R light disc.
Owner:EAST CHINA UNIV OF SCI & TECH
New green synthesizing process for ketocoumaran compound
The invention discloses a new green synthesizing process for a ketocoumaran compound. The synthesizing process comprises the following steps: in the absence of a solvent, performing condensation reaction of a mandelic acid compound and hydroquinol under the action of a little amount of acid catalyst to obtain a full condensed intermediate, wherein the acid catalyst is selected from one of 10 to 37 percent concentrated hydrochloric acid, 60 to 98 percent concentrated sulfuric acid, fuming sulfuric acid, 80 to 98 percent phosphoric acid, polyphosphoric acid, p-toluenesulfonic acid, trifloromethanesulfonic acid, benzoic acid, ammonium acetate, ammonium chloride, KF, TiC14, NiCl2, CuSO4, Cu(OAc)2, ZnCl2, AlCl3, Fe(NO3)3, FeCl3 and SnCl2; and performing oxidation reaction of full condensed intermediate under the action of an oxidant to obtain a final product ketocoumaran compound. The synthesizing process of the invention is simple, and has low energy consumption and little environmental pollution.
Owner:ZHEJIANG UNIV OF TECH
Hypocrellin derivative containing long-chain quaternary ammonium salt, and preparation method and application thereof
InactiveCN105541647ARaw materials are easy to getLow costOrganic compound preparationPhotodynamic therapySolubilityQuaternary ammonium cation
The invention discloses a hypocrellin derivative containing a long-chain quaternary ammonium salt, and a preparation method and an application thereof. The structural general formula of the derivative is represented by formula (1) or formula (2) shown in the description. In the formula (1) and the formula (2), X is N, O or S; m is not lower than 2 and not greater than 20, n is not lower than 0 and not greater than 10, p is not lower than 1 and not greater than 2, and m, n and p are positive integers; R1, R2 and R3 are C1-C20 alkyl groups respectively; HA is hypocrellin A; and HB is hypocrellin B. Hypocrellin is modified with long-chain quaternary ammonium salt for the first time, so the water solubility and the biocompatibility of the hypocrellin are enhanced; and the derivative has good oil and water amphipathicity, can effectively combine negatively charged species in organisms, and especially has very good nucleophilicity to tumor cells. The hypocrellin derivative containing a long-chain quaternary ammonium salt can be directly dissolved in normal saline to prepare a preparation medicine, so the medicinal effect of the derivative is improved, and development of hypocrellin medicines for treating cancers and preventing cancer viruses is possible.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in dye-sensitized solar cell
InactiveCN101544845AHigh molar extinction coefficientAchieve ultra-efficientLight-sensitive devicesSolid-state devicesSpectral responseOrganic dye
The invention provides a pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in a dye-sensitized solar cell. The pure organic dye belongs to molecules of a D-phi-A structure. Segments of a donor, a phi conjugated system and a receptor are properly adjusted and controlled respectively to form the pure organic dye with wide spectral response and high molar extinction coefficient. The absorption spectrum of the pure organic dye is over 570 nanometers already close to the absorption of ruthenium dye; and when the pure organic dye is applied to the dye-sensitized solar cell, the photoelectric conversion efficiency of more than 10 percent is obtained, so the dye is the current most efficient and stable pure organic dye.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Wide-band-gap copolymer acceptor material based on perylene diimide and preparation method thereof
ActiveCN110229315AImprove solubilityGood absorption spectrumSolid-state devicesSemiconductor/solid-state device manufacturingOrganic solar cellSolar light
The invention discloses a wide-band-gap copolymer acceptor material based on perylene diimide and a preparation method thereof, belonging to the technical field of solar cell materials. The terpolymerorganic solar cell acceptor material based on perylene diimide, porphyrin and thiophene is a random copolymer organic solar cell acceptor material having a D-A structure, and has a general structuralformula as shown in a formula I which is described in the specification. The random copolymer organic solar cell acceptor material having the D-A structure can further be as shown in a formula II anda formula III. The wide-band-gap copolymer acceptor material based on perylene diimide provided by the invention has the advantages of simple molecular structure, a few and simple preparation steps,usage of cheap and easily-available raw materials for synthesis, and good visible light absorption range and a absorption strength. Perylene diimide copolymer molecules in the invention can be processed by using a solution method and have good solar light capturing ability and thermal stability, so the material is an ideal material for an all-polymer organic solar cell.
Owner:XIANGTAN UNIV
Synthesis and application of o-hydroxy-containing Schiff base type visible light photosensitizer with conjugated structure
InactiveCN101602819AHigh molar extinction coefficientInitiation efficiency is highImino compound preparationChemical structureUv vis absorbance
The invention relates to synthesis and application of o-hydroxy-containing Schiff base type visible light photosensitizer with a conjugated structure. A photosensitizer plays important roles of absorbing light and performing light action. The peak value of UV-visible absorption reaches over 390 nm, the half-peak width is about 100 nm, so that the visible light photosensitizer completely meets the requirement of visible light absorption and can be used for visible light polymerization. A general formula of a chemical structure of the visible light photosensitizer is shown as right, wherein compounds in the molecular structural formula (I) representA:R1, R3:H, R2:OCH3, OCH2CH3, OCH2CH2CH3, OCH2CH2CH2CH3, N(CH3)2, N(CH2CH3)2, N(CH2CH2CH3)2, N(CH2CH2CH2CH3)2, N(Ph)2; B:(R1:H, OCH3, R2,R3:OCH3). The o-hydroxy-containing Schiff base type visible light photosensitizer with the conjugated structure is performed chemical modification to ensure that the peak value of the UV-visible absorption shifts to over 390 nm; and the o-hydroxy-containing Schiff base type visible light photosensitizer with the conjugated structure can be used as a visible light photosensitizer to form a photosensitive system used for visible light polymerization of vinyl monomers in solution with an ultraviolet initiator and other auxiliary agents, or can be used for a photocuring material.
Owner:CHONGQING UNIV
Synthesis and application of indole hemicyanine dye
InactiveCN102964863AReduce fluorescenceImprove bindingStyryl dyesFluorescence/phosphorescencePhoto stabilityBiological macromolecule
Belong to synthesis of functional dyes and their application as fluorescent dyes in the field of fine chemicals, the invention relates to synthesis and application of an indole hemicyanine dye. The compound is formed by condensation of an indole quaternary ammonium salt and corresponding aldehyde, and has the advantages of large molar extinction coefficient, good light stability, and easy synthesis, etc. According to different substituent groups and anions, the molecule involved in the invention can have pH probe properties, solid-state fluorescence properties and the performance to combine with biomacromolecules. When serving as a pH probe, the compound can adjust probe pKa according to different substituent groups, and can be used for bi-color living cell imaging; when serving as a solid-state emission dye, the compound can adjust its solid-state emission wavelength according to different substituent groups and anions; and when serving as a biomolecular probe, the compound has good response to biological molecules and live cell membrane permeability, and can be used for cell staining. Due to its long absorption and emission wavelength, the compound can avoid the interference of biomass autofluorescence, and also reduce the damage of excitation light on cells or biological tissues.
Owner:DALIAN UNIV OF TECH
Heterocycle alkaline-washable carboxylic acid ethyl ester type disperse dye and preparation method thereof
InactiveCN105086498AReduce generationShort synthetic routeMonoazo dyesDyeing processDisperse dyePolyethylene terephthalate glycol
The invention discloses heterocycle alkaline-washable carboxylic acid ethyl ester type disperse dye. The molecular structure of the disperse dye comprises carboxylic acid ethyl ester groups, and the structural general formula of the carboxylic acid ethyl ester groups is D-COOC2H5, wherein the D refers to a color body with a heterocycle azo structure. The invention further provides a preparation method of the heterocycle alkaline-washable carboxylic acid ethyl ester type disperse dye, existing cyanophoric disperse dye is selected as a raw material, and an alcoholysis method is applied to preparation of the heterocycle alkaline-washable carboxylic acid ethyl ester type disperse dye. The disperse dye has good dyeing property, and has high dye-uptake rate and color fastness when being applied to Dacron dyeing; during post-treatment of PET (polyethylene terephthalate) fiber dyeing, acid dye containing water soluble groups and harmfulless ethyl alcohol are generated only through alkaline solution treatment of fibers to achieve ester group hydrolysis, and the obtained acid dye can be recycled through acidification and the like.
Owner:ZHEJIANG SCI-TECH UNIV
Phenyl (benzotriazolyl) benzoate compound
InactiveCN101434582AHigh molecular weightStrong UV Absorbing PropertiesOrganic chemistryBenzoic acidBenzotriazole
The invention relates to a (methylbenzotriazole) phenol benzoate compound. The compound has a structure shown in the Formula I. The (methylbenzotriazole) phenol benzoate compound designed and synthesized has excellent ultraviolet absorption performance due to a relatively wide ultraviolet absorption wave band and a relatively large molar extinction coefficient. Besides, the (methylbenzotriazole) phenol benzoate compound designed and synthesized by the invention has relatively large molecular weight, thus being not easy to migrate and lose during the processing process of a high molecular polymer (served as an additive). In the Formula I, R1 is -OH, R2 and R3 are respectively selected from one of H or an electron-attracting group.
Owner:EAST CHINA UNIV OF SCI & TECH
Fluoroboron pyrrole liquid crystal compound containing 8-(diphenylethinyl)-ester group flexible multi-element rings, preparation method and application thereof
Owner:DALIAN UNIV OF TECH
Near-infrared two-window fluorescence probe based on Aza-BODIPY, as well as preparation and application thereof
ActiveCN109320536AGood light stabilityNo side effectsGroup 3/13 element organic compoundsFluorescence/phosphorescenceChemistryImage resolution
The invention relates to design synthesis and application of a near-infrared two-window fluorescence probe based on Aza-BODIPY, and belongs to the field of organic fluorescence probes. A near-infraredtwo-area dyestuff (NIR-II, 1000-1700nm) has a long emission wavelength and less light scattering and tissue autofluorescence interference so as to obtain better resolution ratio and imaging depth inbioimaging. An Aza-BODIPY fluorescent dye has a longer absorption emission wavelength, a narrower peak width at half height and a larger molar extinction coefficient, and is widely applied to the fields such as photodynamic therapy. The structural formula of the near-infrared two-window fluorescence probe designed and synthesized by the invention is as shown in the figure (I). According to the probe, electron-donating group julolidine is introduced onto the classic Aza-BODIPY structure, and the molecular rigidity is improved. The probe has excellent light stability and a capacity of resistingdisturbance. The probe successfully realizes near-infrared two-window imaging during the mice imaging experiment.
Owner:NANJING UNIV OF TECH
Mycobacterium tuberculosis LAM (lipoarabinomannan) detection kit, preparation and use method thereof
InactiveCN105137072AIncrease contact areaFacilitate spatial conformational expansionBiological material analysisBiological testingLow noiseMagnetic bead
The present invention relates to a nano immunomagnetic bead-near infrared fluorescence notation labeling method-based mycobacterium tuberculosis lipoarabinomannan (LMA) detection kit, a near-infrared fluorescence dye is used for labeling of a monoclonal antibody targeted to LAM, and nano magnetic bead surface is coated with a polyclonal antibody targeted to LAM, by use of the principle of double antibody sandwich method, a conjugate and free substances are magnetically separated, a a portable high sensitivity and low noise excitation fluorescence detector is used to detect the fluorescence intensity of the magnetic conjugate so as to detect the LAM content of a sample to be tested. The detection kit is applicable to the LAM detection in clinical and pathological specimens, and has the characteristics of being rapid, sensitive, anti-stray fluorescence interference, and long in emission fluorescence save time.
Owner:广东国际旅行卫生保健中心(广东出入境检验检疫局口岸门诊部) +2
Synthesis and application of p-methoxyl-containing Schiff base type visible light photosensitizer with conjugated structure
InactiveCN101602820AHigh molar extinction coefficientInitiation efficiency is highImino compound preparationChemical structurePhotosensitizer
The invention relates to synthesis and application of p-methoxyl-containing Schiff base type visible light photosensitizer with a conjugated structure. A photosensitizer plays important roles of absorbing light and performing light action. The peak value of UV-visible absorption reaches over 380 nm, the half-peak width is about 100 nm, so that the visible light photosensitizer completely meets the requirement of visible light absorption and can be used for visible light polymerization. A general formula of a chemical structure of the visible light photosensitizer is shown as right, wherein compounds in the molecular structural formula (I) represent A:R1, R3:H, R2:OCH3, OCH2CH3, OCH2CH2CH3, OCH2CH2CH2CH3, N(CH3)2, N(CH2CH3)2, N(CH2CH2CH3)2, N(CH2CH2CH2CH3)2, N(Ph)2; B:(R1:H, OCH3, R2, R3:OCH3). The p-methoxyl-containing Schiff base type visible light photosensitizer with the conjugated structure is performed chemical modification to ensure that the peak value of the UV-visible absorption shifts to over 380 nm; and the p-methoxyl-containing Schiff base type visible light photosensitizer with the conjugated structure can be used as a visible light photosensitizer to form a photosensitive system used for visible light polymerization of vinyl monomers in solution with an ultraviolet initiator and other auxiliary agents, or can be used for a photocuring material.
Owner:CHONGQING UNIV
Image recording material
InactiveUS20080057439A1High molar extinction coefficientReduce the amount requiredPhotosensitive materialsPhotomechanical apparatusChemical compoundImage recording
Provided is an image recording material capable of being directly recorded by various kinds of lasers, excellent in alkali-developability by alkaline developer and capable of forming an image which is good in curability by exposure. The image recording material is characterized by including on a support: an image recording layer containing a binder polymer (A); a compound (B) having a polymerizable unsaturated group, and a polymerization initiator (C); and a layer containing an organic ionic polymer (a) formed of a non-metallic element and an inorganic layered compound (b) that are layered in this order. It is preferable that the image recording layer further contains a dye (D) having an absorption maximum in a region of 300 to 1,200 nm, and it is preferable that the binder polymer (A) is a polymer having an alkali-soluble group.
Owner:FUJIFILM CORP
Complexes of rare earth-beta-diketone-naphthisodiazine and synthetic method
InactiveCN1687079AHigh thermal decomposition temperatureHigh purityGroup 2/12 element organic compoundsSynthesis methodsRare earth
The rare earth-beta-diketone-naphthisodiazine complex and its synthess emthod relates to chemical product and preparation technology. Said invention also provides its structure general formula, and its synthesis method includes the following steps: dissolving rare earth oxide in organic acid, using secondary distilled water to dissolve product to obtain rare earth inorganic salt aqueous solution; dissolving 1,3-diphenyl-1,3-propanedione and 1,10-naphthisodiazine in ethyl alcohol aqueous solution, adding rare earth inorganic salt aqueous solution, constant temperature stirring, standing still, filtering, washing out solvent, high-temp, vacuum drying so as to obtain rare earth-beta-diketone-naphthisodiazine. Said complex has good resolubility, optical property and optical and thermal stability.
Owner:HEILONGJIANG UNIV
Fluorescence probe based on BODIPY type singlet oxygen
InactiveCN107056827AGood light stabilityHigh molar extinction coefficientGroup 3/13 element organic compoundsFluorescence/phosphorescenceSinglet oxygenFluorescent imaging
The invention discloses a fluorescence probe based on BODIPY type singlet oxygen. The fluorescence probe has the characteristics of high sensitivity, high selectivity and fast response in a neutral environment for detection of singlet oxygen. The fluorescence probe has no fluorescence, fluorescence is obviously enhanced after response with the singlet oxygen, the fluorescence intensity and the concentration of the singlet oxygen have good linear relation, the fluorescence probe can be used for quantitative detection, and other active oxygen substances do not interfere detection. The prepared fluorescence probe has classic BODIPY spectral characteristic, can detect mercury ions in chemical samples, biological samples or medical samples on the basis of fluorescence enhancement or chromaticity enhancement, and is suitable for fluorescence imaging.
Owner:HUNAN CITY UNIV
Near-infrared window II emission type fluorescent dye as well as preparation method and application thereof
ActiveCN109400572AHigh molar extinction coefficientLong emission wavelengthPowder deliveryOrganic chemistrySolventInfrared window
The invention belongs to the technical field of biological materials, and particularly relates to a near-infrared window II emission type fluorescent dye as well as a preparation method and application thereof. The near-infrared fluorescent dye provided by the invention has the advantages of being large in molar extinction coefficient, long in absorption and emission wavelength and wide in adjustable range, and therefore the dye can be applied to deep-tissue multi-channel imaging, fluorescent encoding microspheres and the like; and in addition, the dye is not liable to generate solvatochromismin a polar solvent, has better stability in water compared with an existing common near-infrared window II heptamethine cyanine fluorescent dye and has very good chemical stability within a relatively large acid-base range.
Owner:FUDAN UNIV
Red temporary water-soluble disperse dye and manufacturing method and use thereof
InactiveCN102161833AChromatographic peak widthGood exhaustionMonoazo dyesInksWater solubleWater treatment
The invention discloses a red temporary water-soluble disperse dye and a manufacturing method and use thereof. The structure formula of the dye is shown below. The chromatographic peak of the dye disclosed by the invention is wide, the dyeing exhaust property of the dye is better, the raffinate is almost colorless, the molar extinction coefficient of the dye is high, and the color of the dye is bright; the yield of the dye is close to a theoretical value, and waste water treatment is convenient; and color fastness to light and color fastness to washing are greatly improved than before. The dye can be used for preparing ink for ink-jet printers. When the ink is used, the dye separated out on printing paper does not dissolve again, nor disperse upon contact with water, and thus, the application range of the ink-jet printers is expanded.
Owner:河南洛染股份有限公司
Macrocyclic extended porphyrin compound containing carbazole unit and preparation method thereof
ActiveCN111253409AImprove solubilityImprove stabilityOrganic chemistryPhotovoltaic energy generationPorphyrin synthesisCarbazole
The invention discloses macrocyclic extended porphyrin containing a carbazole unit and a preparation method of the macrocyclic extended porphyrin. The extended porphyrin is a member of the isoporphyrin family, and the skeleton of the extended porphyrin is generally composed of more than 4 conjugated pyrrole rings / heterocycles. Compared with a traditional porphyrin structure, the macrocyclic extended porphyrin has more coordination atoms, a larger cavity and rich conformations. The extended porphyrin can be complexed with larger metal ions or form a host-guest complex with multiple transition metal ions, so that the extended porphyrin has excellent coordination ability. Meanwhile, because of a larger pi-electron conjugate path of the expanded porphyrin, the expanded porphyrin can show different topological aromaticity and excellent photoelectric and magnetic properties. The macrocyclic extended porphyrin synthesis method is simple, the raw materials are cheap and easy to obtain, the reaction is easy to control, and efficient and large-scale preparation can be realized. The expanded porphyrin supramolecular host has potential application value in the fields of organic catalysis, lifescience, material science, environmental energy and the like.
Owner:SHANGHAI UNIV
Mycobacterium tuberculosis ESAT-6 protein detection kit, as well as preparation method and use method
InactiveCN104807993AHigh molar extinction coefficientIncrease contact areaBiological material analysisMaterial analysis by optical meansLow noiseProtein detection
The invention relates to a mycobacterium tuberculosis ESAT-6 protein detection kit based on the nano-immunomagnetic bead-near infrared fluorescence labeling method. In the detection kit, a monoclonal antibody targeting the ESAT-6 is labeled with a near infrared fluorescence dye; the surface of a nano-magnetic bead is coated with a polyclonal antibody targeting the ESAT-6. Based on the double-antibody sandwiching principle, combined substances and free substances are separated from each other magnetically; a portable high-sensitivity low-noise stimulating fluorescence detection instrument is adopted for detection of the fluorescence intensity of a magnetic combined substance, so as to detect the ESAT-6 protein content in a sample to be detected. The detection kit is suitable for ESAT-6 detection of a clinical pathological sample, and has the advantages of being instant, sensitive, stray fluorescence excitation-resistant, and long in emitted fluorescence saving time.
Owner:广东国际旅行卫生保健中心(广东出入境检验检疫局口岸门诊部) +1
Triphenyldioxinimide diploid compound and preparation method thereof
InactiveCN107759622AGood redox propertiesGood electron transport propertiesOrganic chemistrySolid-state devicesSide chainChemistry
Owner:DALIAN UNIV OF TECH
Taurine substituted bodipy fluorescent compound and preparation method and application thereof
InactiveCN108373478AHigh molar extinction coefficientHigh strengthPhotodynamic therapyAzo dyesEthanesulfonic acidMetallole
The invention provides a taurine substituted bodipy fluorescent compound, and further provides a preparation method of the taurine substituted bodipy fluorescent compound. The method comprises the following steps: reacting 8-(4-position substituted phenyl)-3, 5-diiodo-1, 2, 6, 7-tetra-substituted bodipy and 1,2-disubstituted taurine under the conditions of an additive, a catalyst and a solvent toobtain 8-(4-position substituted phenyl) 3-iodo-5-(2-ethanesulfonic acid) amine)-1,2,6,7-tetra-substituted bodipy and 8-(4-position substituted phenyl) 3,5-bis((2-ethanesulfonic acid) amine)-1,2,6,7-tetra-substituted bodipy. According to the taurine substituted bodipy fluorescent compound, by a cheap metal catalyzed direct C-X / N-H activating method, taurine with biological activity is introducedat a 3,5 activated site of star fluorescent molecule bodipy, and therefore, a novel fluorescent molecule framework is formed.
Owner:HUBEI GRAND LIFE SCI & TECH CO LTD
Polylactic acid fiber dyeing azo structured lactate type disperse dye and preparation method and dyeing process thereof
ActiveCN109440490AImprove dye uptakeImproved fastness to sublimationDyeing processDisperse dyeHydrogen
The invention belongs to the technical field of disperse dyes and particularly relates to a polylactic acid fiber dyeing azo structured lactate type disperse dye and a preparation method and dyeing process thereof. The polylactic acid fiber dyeing azo structured lactate type disperse dye is prepared by taking a hydroxyl group-containing disperse dye as the raw material for reflux reaction with lactic acid. The polylactic acid fiber dyeing azo structured lactate type disperse dye introduces lactate groups which are similar in structure to fiber and high in polarity to improve the compatibilitywith polylactic acid fiber and increase the dyeing rate; meanwhile, hydroxyl of the lactate groups can increase the boiling point of the polylactic acid fiber dyeing azo structured lactate type disperse dye and help form intermolecular hydrogen bonds to improve the color fastness to sublimation of the polylactic acid fiber dyeing azo structured lactate type disperse dye. Therefore, the polylacticacid fiber dyeing azo structured lactate type disperse dye is bright in color, high in color intensity and fastness and good in dyeing effects.
Owner:SHANDONG UNIV OF TECH
Phthalocyanine-azo double-chromophore activated dye having a high fixation rate and a preparing method and application thereof
ActiveCN109021614AHigh affinityOvercome CompatibilityReactive dyesDyeing processFiberRegenerating fibers
The invention relates to phthalocyanine-azo double-chromophore activated dye having a high fixation rate and a preparing method and application thereof. The method includes copper phthalocyanine chlorosulfonation to prepare a phthalocyanine turquoise blue base, a first time of condensation, a second time of condensation, diazotization and a coupling reaction to obtain the activated dye having a high fixation rate. The dye is suitable for pattern printing for cotton, artificial cotton, linen, regenerated fibers and textiles thereof, and has a high fixation rate, bright color, excellent improving performance, good washable fastness, good color fastness to rubbing and a good application prospect.
Owner:DONGHUA UNIV
Red light excited fluorescent dye as well as preparation method and application thereof
PendingCN108130070AEnlarging the large π bondIncreased conjugated systemSolid-state devicesAzo dyesLaser dyeApplication areas
The invention relates to the field of photo-functional materials, in particular to a red light excited fluorescent dye. The red light excited fluorescent dye has a structure shown as the formula (I) in the description. The red light excited fluorescent dye has quite wide excitation spectrum, is good in photostability and high in sensitivity, realizes trace detection, can be used in different application fields such as cell imaging, fluorescence probes, laser dyes, fluorescence sensors and the like, and shows good practicability. According to the preparation method, raw material cost is low, nopollution is produced, the process is simple, and yield is high; the prepared fluorescent dye is novel in structure, good in performance and suitable for being widely applied in the fields of biology, environment and the like.
Owner:SUZHOU BAIYUAN GENT CO LTD
Preparation method of quinoline heptamethine cyanine dye
InactiveCN108410202AFluorescence wavelength does not affectMeet different usage requirementsMethine/polymethine dyesOrganic chemistryQuantum yieldOrganic solvent
The invention relates to near infrared quinoline type heptamethine cyanine dye and a preparation method thereof and belongs to the field of chemical organic dye synthesis. Synthetic near infrared dyehas the advantages of excellent optical performance such as in a near infrared region 2, large compound Stokes shift, high photostability, few synthesis step and convenience for purification. The mostobvious characteristics of the dye include high absorptivity in the near infrared zone 2, excellent penetrability to environment and biological tissue and high quantum yield in an organic solvent like dichloromethane. The dye can be used in the field of biomolecular marking and fluorescence imaging. A probe preparation method is simple and easy to implement, low in cost, good in economic benefitand suitable for industrial production.
Owner:成都驷博生物科技有限公司
Near-infrared two-zone squaric acid quinoline dye and preparation method thereof
InactiveCN110003103AFluorescence wavelength does not affectMeet different usage requirementsMethine/polymethine dyesOrganic chemistryQuantum yieldChemical structure
The invention discloses a near-infrared two-zone squaric acid quinoline dye and a preparation method thereof, and belongs to the field of organic dye synthesis. The prepared squaric acid quinoline dyeis of a symmetrical chemical structure, looks like a brown to black solid, has a melting point of 200 to 400 DEG C. The R alkyl group is a C1-C8 alkyl chain, and changing the length of the R alkyl chain does not affect the wavelength of fluorescence and can meet different use requirements, so that the dye is applied more widely. The near-infrared two-zone squaric acid quinoline dye prepared by the preparation method has a fluorescence emission wavelength of 900 to 1,100 nm, a high molar extinction coefficient, good light stability, can effectively avoid biological background fluorescence interference, has the advantages of high fluorescence quantum yield, short synthesis steps and the like, has excellent penetrability to the environment and biological tissues, and provides a good application prospect for biomolecular markers, solar cells, fluorescent imaging and the like.
Owner:NANTONG UNIVERSITY +1
Novel silver development reagent for latent fingerprint development and preparation process of silver development reagent
InactiveCN105615892ASimple preparation processImprove adsorption capacityPerson identificationLatent fingerprintForensic science
The invention provides a novel silver development reagent for latent fingerprint development and a preparation method of the silver development reagent. The silver development reagent solves the problems of a conventional silver mirror reaction based fingerprint detection technology which is difficult for preparation, complex to operate, short in expiration date of reaction liquid and the like. The silver development reagent, which as a reaction activity, is prepared from a mixed solution of silver acetate, ammonium hydroxide and formic acid through a chemical reduction reaction. As the reagent is heated in air and a solvent volatilizes, silver nanoparticles are generated in situ, so that the latent fingerprint development is achieved. In addition, the development reagent also has the advantages of simple preparation, convenient use, long expiration date and the like, and development of latent fingerprints can be achieved rapidly; in addition, the silver development agent shows a good latent fingerprint development effect on the surfaces of various materials, so as to provide basis for the identification of personal identity information; therefore, the silver development reagent disclosed by the invention can have a broad application prospect in the field of forensic science.
Owner:QINGDAO AGRI UNIV
Method for detecting aflatoxin M1
PendingCN109270260ALow costHigh molar extinction coefficientNanoparticle analysisBiological particle analysisAflatoxin MAntigen
The invention relates to a method for detecting aflatoxin M1. According to the method, aflatoxin B1 marked by enzyme is taken as a competitive antigen, and on the basis of a dynamic light scattering technology, the aflatoxin M1 is detected through a direct competitive enzyme linked immunoassay analysis method. The method reduces the affinity between the competitive antigen and a monoclonal antibody of the aflatoxin M1, and the problem is solved that the sensitivity is reduced due to the fact that the competitive antigen is not easily competed by s target competitive antigen; the detection of an output signal is performed by means of the dynamic light scattering method, compared with a traditional direct competitive enzyme linked immunoassay analysis method, the detection sensitivity can beimproved, and the trace detection of the aflatoxin M1 can be achieved.
Owner:WUXI ZODOLABS BIOTECH
Poly-substituted near-infrared hypocrellin derivative, preparation method and applications thereof
ActiveCN107935964ARaw materials are easy to getLow costOrganic chemistryPhotodynamic therapyExtinctionSinglet oxygen
The invention discloses a poly-substituted near-infrared hypocrellin derivative, a preparation method and applications thereof, wherein the poly-substituted near-infrared hypocrellin derivative is represented by the following formula (I) or formula (II). According to the present invention, the sites 2 (3 or 15), 4 and 5 (or 8 and 9) are simultaneously substituted to modify hypocrellin so as to obtain the novel hypocrellin derivative with absorption of more than 700 nm, wherein the molar extinction coefficient is 10000-40000 M<-1>cm<-1>; the derivative can efficiently produce singlet state oxygen and other reactive oxygen species under near-infrared light irradiation, and has good photodynamic effect; and by further adjusting the hydrophilicity and the hydrophobicity of the hypocrellin precursor through the substituents, the poly-substituted near-infrared hypocrellin derivative can meet different clinical medication requirements. The formulas (I) and (II) are defined in the specification.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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