83results about How to "Achieving selective recognition" patented technology

The invention relates to the technical field of quick detection of soil nutrient and discloses a sensor array for quickly detecting soil nitrate nitrogen. The sensor array comprises a silver-silver chloride reference electrode and multiple polypyrrole polymer sensitive film sensors; the reference electrode and the multiple sensors are arranged in parallel; and each sensor comprises a substrate and a polypyrrole polymer film which is located on the substrate and is doped with nitrate radical. The invention also provides a method for detecting nitrate nitrogen content by utilizing the sensor array. According to the invention, the problems such as undesirable selectivity and the like in the conventional polyvinyl chloride ion selective electrode for the soil nitrate nitrogen detection sensor can be solved.

The invention relates to a rapid high-selectivity hypochloric acid fluorescence probe and an application thereof. The probe is 4-hydroquinone based naphthalimide compounds, and the compounds can be used to detect hypochloric acid as a hypochloric acid fluorescence probe. The probe has at least one of the following technical effects: highly-selectively identification of hypochloric acid / hypochlorite ions; rapid response to hypochloric acid / hypochlorite ions; instant detection of hypochloric acid / hypochlorite ions; stable properties and long-term preservation and use; facilitation of detection of hypochloric acid under physiologic level conditions; and strong anti-interference ability.

The present invention relates to a fast and highly selective mercury ion fluorescent probe. The mercury ion fluorescent probe is a sulfocarbonate compound, and the structural formula is as shown in the specification. The mercury ion fluorescent probe can achieve at least one of the following technical effects: highly selective identification of mercury ions; rapid response to the mercury ions; large Stokes shift; stable nature, long term preservation and use; and strong anti-interference ability.

The invention relates to a high-sensitivity high-selectivity fluorescence probe capable of real-time responding hypochlorous acid and application of the high-sensitivity high-selectivity fluorescence probe. The fluorescence probe is a kind of 2-benzothiazoline phenol compounds specifically and can be used as the fluorescence probe to be used for detection of hypochlorous acid / hypochlorite. By utilizing the fluorescence probe, at least one of the technical effects can be realized, for example, hypochlorous acid / hypochlorite can be identified with high sensitivity and high selectivity, response to hypochlorous acid / hypochlorite can be realized instantly, real-time detection to hypochlorous acid / hypochlorite can be realized, the fluorescence probe is stable in character and can be stored and used for long term, detection to hypochlorous acid / hypochlorite is easy under the condition of physiological level, and the fluorescence probe has strong antijamming capability.

The invention relates to a fast high-selectivity super-sensitive nickel ion colorimetric fluorescent probe and a preparation method thereof. Specifically, the probe provided by the invention is an allyl carbonic ester compound and can be used as a nickel ion colorimetric fluorescent probe for detecting nickel ions. The probe can realize at least one of the following technical effects: high selectively recognizing the nickel ion, quickly responding to the nickel ion, high sensitively analyzing the nickel ion, realizing the naked eye colorimetric analysis for the nickel ion and having stable properties, long-term storage and use and higher anti-jamming capability.

The invention relates to a high-selectivity quick fluorine ion analyzing colorimetric fluorescent probe. Specifically, the colorimetric fluorescent probe is a naphthalimide compound which can serve as the fluorine ion colorimetric fluorescent probe for fluorine ion detection. The probe has at least one of advantages including high selectivity in fluorine ion recognition, quickness in response to fluorine ions, high sensitivity in fluorine ion analysis, property stability, availability for long-term storage and high antijamming capability.

The invention relates to a method for highly selectively detecting the concentration of hydrazine. Particularly, a 4-bromobutyratetricyanostyrene compound is used as a long-wavelength hydrazine colorimetric fluorescent probe and is used for determining the content of the hydrazine in a sample. The probe not only can be used for highly selectively identifying the hydrazine, but also can be used for carrying out sensitive quantitative and qualitative analysis on the hydrazine by using a fluorescent method at a long-wavelength part. The probe can be used for rapidly responding the hydrazine and can realize the instant detection of the hydrazine; and the quantitative and qualitative analysis on the hydrazine can be observed by only naked eyes. The probe has stable characters and can be stored for a long period. Furthermore, the probe also has a relatively strong anti-interference capability.

The invention relates to a long-wavelength ultra-sensitive carbon monoxide colorimetric fluorescent probe. Particularly, the probe is a cyanine compound, and can be used as a carbon monoxide ratio fluorescent probe for detecting carbon monoxide. The probe has at least one of the following technical effects: the carbon monoxide is recognized at high selectivity; the probe can rapidly respond the carbon monoxide; the carbon monoxide can be analyzed at high sensitivity; colorimetric analysis on the carbon monoxide can be realized; the property is stable, and the probe can be stored and used for along time; and the anti-jamming capability is high.

The invention relates to a quick, highly selective and ultra-sensitive hypobromous acid fluorescence probe. In particular, the probe is a 4-amino-1,8-naphthalimide compound and can serve as the hypobromous acid fluorescence probe for hypobromous acid detection. The probe can achieve at least one of the following technical effects that probe can highly selectively identify hypobromous acid, quicklyrespond to hypobromous acid, highly sensitively analyze hypobromous acid and achieve hypobromous acid analysis, is stable in property, can be stored and used for a long term, and has higher interference resistance.

The invention relates to high-selectivity hydrazine ratiometric fluorescent probes and preparation methods thereof. The probes are not only high in selectivity in hydrazine recognition but also flexible in hydrazine qualitative and qualitative analysis carried out according to a fluorescence method. The probes are capable of quickly responding to hydrazine to realize real-time hydrazine detection and are available for long-term storage and use due to property stability. In addition, the probes are capable of realizing accurate qualitative analysis on hydrazine according to a ratiometric fluorescence method and have excellent anti-interference performances. Synthesis conditions of the probes are mild relatively, and the probes can be synthesized simply only by one-step reaction.

The invention discloses a nano supermolecular co-assembly of amphiphilic cyclodextrin CD and amphiphilic calixarene CA as well as a preparation method and an application and belongs to the technical field of nano supermolecular materials. Amphiphilic beta cyclodextrin CD and amphiphilic carboxyl calyx[5]arene CA are used as construction units and can form co-assembly vesicles in a certain manner under the condition of coexistence in a water liquor, by means of the method, cavities of cyclodextrin and calyxarene are enriched in surfaces of the vesicles, multi-valence bonding with polypeptide can be formed on vesicle interfaces by use of the selective recognition capacity of the cavities and amino acid, and selective recognition of polypeptide can be realized, so that protein is recognized.

The present invention discloses an amphiphilicity guanosine derivative, a preparation method therefor and an application thereof in cytidine triphosphate sensing and recognition. The amphiphilicity guanosine derivative takes a hexadecyl chain as a tail group and a guanosine derivative as a head group, and has the features of biocompatibility and nontoxicity; the amphiphilicity guanosine derivative can be assembled with an amphiphilicity Tb (III) complex to form a vesicle type nano interface; characteristic fluorescence of the Tb (III) complex is greatly sensitized by an energy transfer process between a guanosine construction unit assembled on the interface and the Tb (III) complex; and when cytidine triphosphate which can be in complementary pairing with guanosine is added in the system, the energy transfer process between the guanosine derivative and the Tb (III) complex can be blocked drastically, thereby quenching the characteristic fluorescence of the Tb (III) complex and achieving selective recognition for the cytidine triphosphate. The amphiphilicity guanosine derivative provided by the present invention is simple in preparation method and mild in reaction condition, and can be used for cytidine triphosphate detection.

The invention provides a biological fluorescent probe for detecting nickel ions and a preparation method thereof. The biological fluorescent probe is a Ni2+ fluorescent probe with rapid and high sensitivity, the probe has high anti-interference capability for other common metal ions, and the probe is used for qualitative and quantitative determination of nickel ions in environment and cells. The preparation method is simple, operation is convenient, result stability is good, and the method is easy to carry out and promote. The probe and the method have good application values for nickel ion detection. Convenience of detection process is greatly improved. The demands in practical application processes are accorded with.

The invention relates to a ratio-type near-infrared cysteine fluorescent probe that may act with cysteine and that has high sensitivity and selectivity. The ratio-type near-infrared cysteine fluorescent probe is applicable to high-sensitivity and high-selectivity recognition of cysteine or measurement of cysteine concentration in a sample.

The invention relates to a ratio fluorescence probe capable of quickly and highly selectively analyzing hydrazine. Particularly, the probe is a naphthalimide type compound taking 4-bromobutyric acid ester as a recognition receptor and can be applied to hydrazine detection by serving as a hydrazine fluorescence probe. The probe can achieve at least one of the following technical advantages of highly selectively recognizing hydrazine, being capable of quickly responding to hydrazine and achieving instant detection on hydrazine, stable in performance, capable of being stored and used for a long term and beneficial for detecting hydrazine in actual samples and achieving the high anti-jamming capability.

The invention relates to a high-selectivity and ultra-sensitive liver cancer cell specific peroxynitrite probe. Specifically, the probe is a naphthalimide compound and can be taken as a peroxynitritefluorescence probe to be used for detecting peroxynitrite in liver cancer cells. The probe can realize at least one of the following technical effects: peroxynitrite can be recognized with high selectivity; response to peroxynitrite can be rapidly realized; ultra-sensitive analysis for peroxynitrite can be realized; quantitative analysis for peroxynitrite can be realized; peroxynitrite in the liver cancer cells can be specifically detected; the property is stable, and the probe can be stored for a long time for use.

The invention relates to preparation and application of a long wavelength colorimetric fluorescent probe capable of rapidly and high-selectively analyzing thiophenol. In specific, the probe is a 2, 4-dinitrophenylate compound which can serve as the thiophenol colorimetric fluorescent probe to detect thiophenol. The probe can achieve at least one of the following technical effects: high-selectivelyidentifying thiophenol; rapidly responding to thiophenol; achieving high sensitivity analysis on thiophenol; being stable in quality, capable of being reserved and used for a long time; and having the strong anti-jamming capability.

The invention discloses an ultra-microporous ionic polymer material based on hyperbranched ionic liquid and preparation and alkyne / olefin separation application thereof. The ultra-microporous ionic polymer material has the characteristics of high anion density and narrow pore size distribution, and the structural properties are regulated and controlled by changing a hyperbranched structure and anion and cation types. High-selectivity separation of acetylene and propyne is realized by utilizing a strong hydrogen bond environment constructed by high anion density and a size screening effect, sothat alkyne in alkyne and olefin mixed gas is removed to a very low degree, and olefin gas with extremely low alkyne content is obtained. The material prepared by the method has the advantages of highstability, simple preparation, strong controllability of material structural properties, good adsorption performance, easy desorption, greenness, environmental protection, and good industrial application prospect.

The invention discloses a molecular imprinting type MOFs catalyst and preparation and application thereof in specific catalytic degradation of antibiotics, and relates to the technical field of new materials. The preparation method comprises the following steps: dissolving ferric salt, a template agent and an organic ligand to obtain a mixed solution, the template agent being an antibiotic molecule; transferring the mixed solution into a hydrothermal reaction device for hydrothermal reaction, eluting precipitates obtained by the hydrothermal reaction to elute the template agent to form molecularly imprinted holes, and drying in vacuum to obtain the molecular imprinting type MOFs catalyst. According to the prepared catalyst material, the advantages of molecular imprinting specific recognition and the characteristic of high adsorption capacity of MOFs materials are effectively combined, and specific recognition and high-capacity adsorption of low-concentration antibiotic pollutants in acomplex system and selective catalytic degradation of the antibiotic pollutants are achieved.

The invention relates to a method for detecting the concentration of hydrazine, and particularly relates to preparation and application of 4-bromobutyric acid ester naphthalimide compounds serving as a hydrazine ratio fluorescent probe. The probe can be used for identifying hydrazine with high selectivity and performing sensitively quantitative and qualitative analysis on hydrazine by a fluorescence method, and can quickly give response to hydrazine so as to realize instant detection on hydrazine. The probe has stable property and can be stored and used for a long time. Furthermore, the probe can be used for performing accurately quantitative analysis on hydrazine by using a ratio fluorescence method, and has a relatively strong interference resistance. The probe has a relatively mild synthesizing condition, only needs one-step reaction, and has simple synthesis.

The invention relates to a high-selectivity ultrasensitive peroxided nitrite ratio fluorescence probe. Particularly, the probe is a benzothiazole-rhodamine-like compound which can serve as the peroxided nitrite ratio fluorescence probe applied to detection of peroxided nitrites. The probe can achieve at least one of the following advantages that peroxided nitrites are highly selectively identified; fast response to peroxided nitrites can be achieved; ultrasensitive analysis of peroxided nitrites can be achieved; ratio quantitative analysis of peroxided nitrites can be achieved; the propertiesare stable, and the probe can be preserved for a long time for use.

The invention relates to a fluorescent probe preparation method. Specifically, the probe disclosed by the invention is benzothiazole-rhodamine compound and can serve as a nitrite peroxide ratio fluorescent probe to be applied to nitrite peroxide detection. The preparation method disclosed by the invention utilizes a one-step synthesizing method, so that the preparation method has the advantages ofsimpleness in preparation and high yield.

The invention relates to a method for rapid and highly-selective detection of hypochlorous acid. Specifically, a probe for the method is a paraaminophenol compound and can be used as a hypochlorous acid fluorescent probe for detecting the hypochlorous acid. The probes can realize at least one of the technical effects of highly selectively recognizing the hypochlorous acid, rapidly responding to the hypochlorous acid, realizing high-sensitivity analysis of the hypochlorous acid, and achieving stable properties and long-term storage and use.

The invention relates to a two-photon fluorescence probe for highly selectively and sensitively detecting mercury. Specifically, the probe provided by the invention is a 7-hydroxyl-3-acetocoumarin compound and can be used as a mercury ion colorimetric fluorescence probe for detecting mercury ions. The probe can realize at least one of the following technical effects that the mercury ions are highly selectively identified, the mercury ions can be highly sensitively analyzed, the probe has a stable property and can be preserved and used for a long period, and the probe has a relatively strong anti-interference capability.

The invention discloses a method for rapidly detecting fluorinions in an environment, and belongs to the technical field of analytical chemistry. The method comprises the following steps: mixing a sample to be detected with a colorimetric probe in an organic solvent; measuring the ultraviolet absorption spectrum at 350-600 nm and the fluorescence emission spectrum at 400-680 nm; and calculating the concentration of the fluorinions in the sample to be detected according to the measured ultraviolet absorption intensity at 450 nm and the measured fluorescence emission intensity at 555 nm. The method can highly selectively identify the fluorinions, and also can quantitatively and qualitatively analyze the fluorinions in a naked eye observation manner. The method achieves fast effective response to the fluorinions and real-time detection of the fluorinions.

The invention relates to a colorimetric fluorescence probe for quickly and highly selectively analyzing cupric ions and a preparation method thereof. Specifically, the probe is a 2-picolinate compound, and can serve as a cupric ion colorimetric fluorescence probe used for detection of cupric ions. The probe can realize at least one of the following technical effects: the cupric ions are highly selectively recognized; response for the cupric ions can be quickly realized; highly-sensitive analysis for the cupric ions can be realized; naked eye colorimetric analysis for the cupric ions can be realized; the characteristics are stable, and the cupric ions can be stored and used for long time; and the probe has relatively high anti-jamming capability.

The present invention relates to a colorimetric fluorescent probe for ultrasensitive analysis of mercury based on resorufin. Specifically, the probe is a class of resorufin-like compounds and can be used as a mercury ion colorimetric fluorescent probe for detection of mercury ions. The probe can achieve at least one of the following technical effects: high-selective identification of the mercury ions, ultrasensitive analysis of the mercury ions, stable property, long-term preservation and use and relatively strong anti-interference ability.

The invention relates to a method and kit for determining fluorine ions. Particularly, probes of the invention are naphthalimide compounds and may be used as a fluorine ion colorimetric probe for detecting fluorine ions. These probes may have one of the following advantages: fluorine ions are recognized highly selectively; fluorine ions may be responded quickly; fluorine ions may be analyzed highly sensitively; the probes with stable properties may be stored and used for a long time; the probes have high anti-interference capacity.

The invention relates to a high-selectivity mercury ion near-infrared fluorescence probe taking phenyl thionocarbonate as a recognition receptor, and more specifically relates to a phenyl thionocarbonate compound which can be applied in detection of mercury ions as a mercury ion fluorescence probe. The high-selectivity mercury ion near-infrared fluorescence probe comprises at least one of the following functions: high selectivity identification of mercury ions can be realized, sensitive response on mercury ions can be realized, rapid detection of mercury ions can be realized, performance is stable, long term storage can be realized, it is beneficial for detection of mercury ions in practical samples, and relatively high capacity of resisting disturbance is achieved.

The invention relates to highly selective ultra-sensitive colorimetric fluorescent probes for detecting copper ions. In particular, the probes are a class of rhodamine-type compounds which can be used as copper ion colorimetric fluorescent probes for detection of copper ions. The probes can achieve at least one of the following technical effects: high selectivity to identify copper ions, rapid response to copper ions, high sensitivity analysis of copper ions, performance stability, long-term storage and use and strong anti-interference ability.