90results about How to "Achieve specific identification" patented technology

The invention discloses an agricultural product pesticide residue detection method. The method comprises the following steps that template molecules, chitosan, hydroxyethyl acrylate, polyethyleneimineand deionized water are taken, imprinted hydrogel with the template molecules is synthesized; pretreatment of to-be-detected vegetables is completed, and a to-be-detected sample solution is prepared;the template molecules of the obtained imprinted hydrogel are removed; a standard Raman spectrogram of the template molecules is made; the imprinted hydrogel obtained after the template molecules areremoved is soaked in the to-be-detected sample solution and fished out, after confocal micro-Raman Spectrum detection is conducted, the obtained Raman Spectrum is compared with the standard Raman spectrogram, and then whether the template molecules are contained in samples or not is judged, and the content range of the molecules is judged preliminarily. Accordingly, the hydrogel with the specificrecognition function is prepared through a molecular imprinting technology, after the to-be-tested samples are adsorbed and enriched by the hydrogel, spectra collection is conducted by means of a portable Raman spectroscope, and whether the samples contain pesticide or not is judged by comparing with the standard Raman spectrogram.

The invention discloses a rare earth organic framework material for detecting vitamin C and a preparation method of the rare earth organic framework material. The rare earth organic framework material is of a long-range ordered crystal structure and is provided with regular pores, and the chemical formula of the rare earth organic framework material is [CeLx(G)(H2O)].(G)n, wherein L is an organic ligand simultaneously containing a tridiphenyl carboxylic acid group, G represents a solvent molecule coordinated with rare earth ions or in a crystal pore, x is equal to 1 to 3, and n is equal to 1 to 4. The rare earth organic framework material is prepared through a solvothermal method; the method is simple and relatively high in yield. The prepared rare earth organic framework material has a good detection effect on the vitamin C; with increase of the amount of the vitamin C, the luminous intensity of the rare earth organic framework material is improved, and the biocompatibility and the thermal stability are high. The rare earth organic framework material is expected to be applied to aspects such as biomedical treatment.

The invention discloses a metal-organic framework material for detecting tryptophan. The material has a long-range ordered crystal structure and regular porous channels, and the chemical formula of the material is [ZnLx (H2O)m], wherein L is an organic ligand containing a benzenecarboxylic acid group and a pyridyl group, x is 0.5 to 1, and m is 1 to 1.5. The material is prepared by a solvothermal technology, and the synthesis method has the advantages of simplicity, easiness in obtaining of raw materials, and high yield. The prepared material has a good water stability and has a good tryptophan detection performance. The luminescence intensity of the prepared material gradually increases with the increase of the tryptophan concentration, and is not interfered by other amino acids. The material enables highly-efficiently and specifically identify the tryptophan, is expected to be applied to the field of biomedicines and the like.

The invention relates to preparation and applications of a phenylboronic acid type hypochloric acid colorimetric fluorescence probe, and more specifically discloses a phenylboronic acid compound. The phenylboronic acid compound can be taken as a hypochloric acid colorimetric fluorescence probe used in hypochloric acid detection. The hypochloric acid colorimetric fluorescence probe is capable of achieving at least one of the following technical effects: high sensitivity selective identification of hypochloric acid and accurate detection; rapid response on hypochloric acid; and real-time detection of hypochloric acid. The phenylboronic acid type hypochloric acid colorimetric fluorescence probe is stable in properties, can be stored for a long term, and is beneficial for detection of hypochloric acid (in vivo / in vitro) in practical samples.

The invention relates to fluorescence probes used for real-time sensitive high-selectivity recognition of hypochlorous acid. The probes are a type of 4-amino-1,8-naphthalimide compounds, and the compounds can be adopted as hypochlorous acid fluorescence probes for hypochlorous acid detection. The probes can achieve at least one of: high-sensitivity high-selectivity recognition of hypochlorous acidand accurate detection; capability of rapid response to the hypochlorous acid; capability of real-time detection of hypochlorous acid; stable properties and capability of long-term storage and use; and capability of facilitating detection of (in-vivo / in-vitro) hypochlorous acid in actual samples.

The invention provides a trinuclear copper alkynyl group complex with the amino acid recognition function and a preparation method of the trinuclear copper alkynyl group complex. According to the trinuclear copper alkynyl group complex with the amino acid recognition function and the preparation method of the trinuclear copper alkynyl group complex, a trinuclear copper alkynyl complex [Cu3([mu]-dppm)3([mu]3-[eta]<1>-C===CC6H4-C(O)H-4)2]BF4 is synthesized. The complex has a three-wire excited state of charge transfer from alkynyl ligand to trinuclear copper, and the specific recognition of cysteine and homocysteine can be realized by a fluorescence spectrum.

The invention discloses an agricultural product pesticide residue detection method. The method comprises the following steps that template molecules, chitosan, hydroxyethyl acrylate, polyethyleneimineand deionized water are taken, imprinted hydrogel with the template molecules is synthesized; pretreatment of to-be-detected vegetables is completed, and a to-be-detected sample solution is prepared;the template molecules of the obtained imprinted hydrogel are removed; a standard Raman spectrogram of the template molecules is made; the imprinted hydrogel obtained after the template molecules areremoved is soaked in the to-be-detected sample solution and fished out, after confocal micro-Raman Spectrum detection is conducted, the obtained Raman Spectrum is compared with the standard Raman spectrogram, and then whether the template molecules are contained in samples or not is judged, and the content range of the molecules is judged preliminarily. Accordingly, the hydrogel with the specificrecognition function is prepared through a molecular imprinting technology, after the to-be-tested samples are adsorbed and enriched by the hydrogel, spectra collection is conducted by means of a portable Raman spectroscope, and whether the samples contain pesticide or not is judged by comparing with the standard Raman spectrogram.