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213 results about "Fluorescence sensing" patented technology

Cd (II)-based metal organic framework crystalline material as well as preparation method and application thereof

The invention relates to the technical field of fluorescence sensing development, in particular to a Cd (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. The chemical formula of the Cd (II)-based metal organic framework crystalline material is {[Cd3 (H2O) 2 (DMA) 2 (5-CMOIA) 2]. 6 / 5H2O} n, the organic framework material is characterized by an X-ray single crystal diffractometer, and the result shows that the organic framework material is crystallized in a triclinic system P-1 space group, the asymmetric unit of the organic framework material is composed of three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions and three The complex is composed of two deprotonated (5-CMOIA) 3-ligands, two coordinated DMA solvent molecules, two coordinated water molecules and six fifths of crystal water molecules. The solid fluorescence spectrum of the Cd (II)-based metal organic framework crystalline material is measured, the fluorescence response of the Cd (II)-based metal organic framework crystalline material to metal ions in a solution is explored, and the result shows that the Cd (II)-based metal organic framework crystalline material can effectively recognize Hg < 2 + > from different ions and can be applied to the field of fluorescence sensing.
Owner:SHAANXI SCI TECH UNIV

Nd (III)-based hydrogen bond organic framework crystalline material and preparation method and fluorescence sensing application thereof

The invention relates to the technical field of fluorescence sensing, in particular to a preparation method and application of an Nd (III)-based hydrogen bond organic framework crystalline material. According to the Nd (III)-based hydrogen bond organic framework crystalline state material, Nd (III) serves as a central metal ion and is coordinated with 9 oxygen atoms, and adjacent Nd (III) are connected through H2 (4-CPCA) ligands to form a one-dimensional chain structure. One-dimensional chains are bridged through H2 (4-CPCA) ligands to form a two-dimensional double-layer planar structure, and two-dimensional surfaces are further stacked through the interaction of a large number of intermolecular hydrogen bonds to form a three-dimensional supramolecular structure. The Nd (III)-based hydrogen bond organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.
Owner:SHAANXI SCI TECH UNIV

Method for distinguishing similar antibiotics by using fluorescence sensing array based on YOLOv5 target recognition

The invention discloses a method for distinguishing similar antibiotics by using a fluorescent sensing array based on YOLOv5 target recognition. The method comprises the following steps: S1, preparing GMP-Tb solid powder; s2, mixing the GMP-Tb solid powder with a rhodamine B solution in proportion to obtain a multi-proportion fluorescent probe; s3, mixing antibiotics with different concentrations with the multi-proportion fluorescent probe to obtain a fluorescent sensing array; s4, collecting color images in the fluorescent sensing array and dividing the color images into a training set and a test set; s5, constructing an OLOv5 optic nerve model, inputting the acquired color image into a YOLOv5 optic nerve model, and outputting a feature value of the acquired color image; s6, inputting the characteristic value of the color image into a classifier model for prediction classification to obtain a distinguishing result; and S7, inputting a color image formed by mixing the to-be-detected antibiotic and the multi-proportion fluorescent probe into the YOLOv5 optic nerve model to obtain a characteristic value of the color image, and then outputting a distinguishing result through the classifier model.
Owner:HENAN POLYTECHNIC UNIV

A fluorescence sensing array detection platform and detection method for multiple plasticizers

The present invention combines a fluorescence sensor with an array to provide a fluorescence sensing array detection platform and a detection method for multiple plasticizers. The fluorescence sensing array detection platform includes a B-doped graphene quantum dot solution using N,N-dimethylformamide as a solvent and a B-GQDs solution using cyclohexane as a solvent; the fluorescence intensity of the B-GQDs solution with DMF as the solvent at the fluorescence characteristic peak obtained under ultraviolet light excitation at a wavelength of 350 nm, and the fluorescence data at 391 nm, 413 nm, and 434 nm are used as array points 1, 2, and 3; the fluorescence intensity of the B-GQDs solution with CH as the solvent at the fluorescence characteristic peak obtained under ultraviolet light excitation at a wavelength of 350 nm, and the fluorescence data at 386 nm, 408 nm, and 430 nm are used as array points 4, 5, and 6; thus, a 3×2 fluorescence sensor array is constructed. The detection method using the fluorescence sensor array of the present invention has simple steps, and has satisfactory specificity, reproducibility, stability and practicability, and has application potential.
Owner:CHONGQING UNIV +1

Europium-based metal-organic framework and preparation method and application thereof

The invention discloses a europium-based metal-organic framework as well as a preparation method and application thereof, and belongs to the technical field of bioassay materials. The preparation method of the europium-based metal-organic framework comprises the following steps: adding europium salt, H4BTA-2OH and ascorbic acid into a binary solution, and sequentially performing ultrasonic treatment, heating and post-treatment to prepare the europium-based metal-organic framework (the molecular formula is {[(CH3) 2NH2] [Eu (BTA-2OH) (H2O) 2]. 4H2O} n). In addition, the invention also discloses an application of the europium-based metal-organic framework in detection of a bacillus anthracis biomarker 2, 6-dipicolinic acid (DPA). The europium-based metal-organic framework Eu-MOF prepared by the method can rapidly detect 2, 6-dipicolinic acid, and has high selectivity and sensitivity, and the excellent fluorescence sensing ability means that the europium-based metal-organic framework Eu-MOF is a potential bacillus anthracis detection material.
Owner:JIANGXI UNIV OF SCI & TECH

Azobisformamide ratio fluorescence detection method based on CoOOH nanosheet loaded Au nano-cluster material

The invention discloses an azodicarbonamide ratio fluorescence detection method based on a CoOOH nanosheet loaded Au nano-cluster material, and belongs to the technical field of fluorescence sensing. The CoOOH nanosheet loaded Au nano-cluster material provided by the invention is prepared by carrying out a one-step electrostatic assembly method on AuNCs and a CoOOH nanosheet. The CoOOH nanosheet loaded Au nano-cluster material has the fluorescence property of the AuNCs and the biomimetic catalytic performance of the CoOOH nanosheet at the same time. The invention further provides an azodicarbonamide ratio fluorescence detection method based on the CoOOH nanosheet loaded Au nano-cluster material, and compared with an existing detection method, the azodicarbonamide ratio fluorescence detection method has the remarkable advantages that the method is high in selectivity; by utilizing a ratio fluorescence mechanism, interference caused by environment and instrument fluctuation can be effectively reduced, reliable quantitative analysis of azodicarbonamide is realized, and the method has the advantages of high sensitivity and high credibility and has a wide prospect in the field of fluorescence sensing detection.
Owner:NANOZYME LABORATORY IN ZHONGYUAN

Ratio fluorescence sensing system and preparation method and application thereof

The invention provides a ratiometric fluorescence sensing system and a preparation method and application thereof, and the preparation method comprises the following steps: respectively preparing a silicon oxide-based aggregation-induced emission material and a copper-doped carbon dot material, and mixing the silicon oxide-based aggregation-induced emission material and the copper-doped carbon dot material with an ascorbic acid-2-phosphoric acid material to construct the ratiometric fluorescence sensing system. The fluorescent probe is applied to ferric ion detection, in-vitro detection of biomarkers or fluorescence imaging. The technical scheme provided by the invention has good stability, accuracy and practical application potential.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI

Aggregation-induced emission-metal-organic framework probe and method for detecting diazinon

The invention discloses an aggregation-induced emission-metal-organic framework probe which is prepared by taking copper hydroxide as a metal center and 1, 1, 2, 2-tetra (4-carboxybenzene) ethylene as an organic ligand through a one-pot solvothermal method. The invention discloses a method for detecting diazinon by using a fluorescence sensing system constructed based on the aggregation-induced emission-metal-organic framework probe. The aggregation-induced emission-metal-organic framework probe is extremely low in background fluorescence, background signal interference during diazinon detection can be reduced, and sensitivity is improved. Meanwhile, enzyme mediation is introduced to serve as a controllable recognition element, specific and sensitive detection of diazinon is achieved, and the detection limit is 0.14 ng.mL <-1 >. The aggregation-induced emission-metal-organic framework probe disclosed by the invention shows the advantages of high sensitivity, high selectivity, quick response, stability, simplicity and convenience in operation and the like in diazinon detection, and has a wide application prospect.
Owner:NANJING AGRICULTURAL UNIVERSITY

Praseodymium (III) metal organic framework crystalline material as well as preparation method and application thereof

The invention relates to the technical field of fluorescence sensing, in particular to a praseodymium (III) metal organic framework crystalline material and a preparation method and application thereof. According to the praseodymium (III) metal organic framework crystalline state material, Pr (III) is used as a central metal ion and forms eight coordination with eight oxygen atoms of six (4-CPCA) 2-ligands. And adjacent Pr (III) are connected through 4-CPCA < 2-> bridging to form a one-dimensional annular chain. And the one-dimensional chains are further bridged and topologically connected through a (4-CPCA) 2-ligand to form a three-dimensional structure. The praseodymium (III) metal organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.
Owner:SHAANXI SCI TECH UNIV

Zn (II)-based metal organic framework crystalline material as well as preparation method and application thereof

The invention relates to the technical field of fluorescence sensing, in particular to a Zn (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. Zinc chloride and H3 (5-COIA) ligands are added into DMA, pH is adjusted, the Zn (II)-based metal organic framework material with a novel structure is prepared through a solvothermal method, the preparation method has the advantages of being convenient to operate, high in yield, good in reproducibility and the like, and the Zn (II)-based metal organic framework material has very strong fluorescence emission performance and good water stability and can be used for preparing a fluorescent material with a novel structure. It has been studied to selectively and sensitively detect La3 + ions in aqueous solutions, thereby further protecting human health and the environment from these contaminants.
Owner:SHAANXI SCI TECH UNIV

Small molecule probe based on fluorescence sensing and application

The invention relates to a small molecular probe TPE-J based on fluorescence sensing and application thereof. According to the intelligent real-time monitoring system for the nitro explosive, a PPYOLO algorithm is utilized, and a fluorescent colorimetric image is captured under the assistance of an optical camera. The fluorescent probe TPE-J is designed and synthesized and is used for dose sensitivity and visual detection of nitro explosives. Electron transfer between PA and the probe causes specific response, original blue fluorescence is rapidly quenched to be non-luminous within 5 seconds, and the detection limit is as low as 1 mg / mL. Color changes can be integrated into optical camera capture and quantization, and generated image data is automatically processed by a deep learning algorithm platform. The sensing system is beneficial to efficient real-time monitoring and high-sensitivity PA detection in various scenes. A fluorescence sensing detection platform combined with deep learning provides a new visual angle for efficient and portable detection of explosives.
Owner:JIANGHAN UNIVERSITY

Preparation method and application of dual-channel multifunctional multicolor fluorescent probe

The invention discloses a preparation method and application of a dual-channel multifunctional multicolor fluorescent probe, and relates to the technical field of fluorescent sensing detection.The dual-channel multifunctional multicolor fluorescent probe is prepared through the following steps that pyromellitic acid and ZrCl4 solids are dispersed in deionized water, Zr-MOF is prepared through a hydrothermal method, pamoic acid and melamine are dispersed in deionized water, and the Zr-MOF is prepared through a hydrothermal method; the preparation method comprises the following steps: preparing green fluorescent carbon dots (CDs) by using a hydrothermal method, dispersing the CDs and Zr-MOF in deionized water according to a certain proportion, reacting, collecting a brown solid, washing, drying, dispersing the solid in ethanol, adjusting the pH to be alkaline, adding Eu (NO3) 3.6 H2O, reacting, filtering, and drying in vacuum to obtain a target probe. The probe can accurately distinguish Cu < 2 + > ions of tetracycline antibiotics (TCs) through two independent fluorescent channels, not only displays completely independent spectral response, but also has the advantages of self-calibration, high sensitivity, interference resistance, field visual detection and the like. The multifunctional fluorescent probe has important significance for improving detection efficiency, reducing cost and energy consumption, optimizing resource utilization and promoting green low-carbon economy.
Owner:HENAN POLYTECHNIC UNIV

Small-molecule probe based on fluorescence sensing and use thereof

The intelligent real-time monitoring system for nitro explosives in the present disclosure adopts a PP-YOLO algorithm, and can capture. Combining fluorescence and colorimetric images with the assistance of an optical camera. The fluorescent probe TPE-J is designed and synthesized for the dosage-sensitive and visual detection of nitro explosives. The electron transfer between picric acid (PA) and the probe causes a specific response that the original blue fluorescence is rapidly quenched to non-luminescence within 5 s, with a detection limit as low as 1 mg / mL. A color change can be integrated into an optical camera for capture and quantization, and the resulting image data is automatically processed by a deep learning algorithm platform. The sensing system facilitates the efficient real-time monitoring and highly-sensitive detection of PA in various scenarios. The fluorescence sensing-based detection platform with deep learning provides a new perspective for the efficient portable detection of explosives.
Owner:JIANGHAN UNIVERSITY

Method for screening hyaluronidase inhibitor by combining fluorescence sensing with affinity chromatography technology

The invention provides a method for screening a hyaluronidase (HAase) inhibitor, and belongs to the technical field of medicines. The method comprises the following steps: firstly, rapidly identifying a natural product with HAase inhibition activity by adopting a fluorescence sensing technology according to the principle that carbon quantum dots (CDs) are used as a fluorescence probe, hyaluronic acid (HA) modified gold nanoparticles are used as a quencher, and the fluorescence of the CDs can be quenched by the quencher; when HAase exists, HA can be enzymatically decomposed to release CDs, and fluorescence recovery is caused; when a screened sample has HAase inhibition activity, CDs fluorescence recovery can be prevented. And 2, capturing components in a sample capable of inhibiting HAase activity by virtue of an affinity chromatography technology, immobilizing HAase on a carrier material by virtue of a method, eluting by virtue of a solvent to obtain components capable of being combined with HAase, and identifying the components by virtue of a liquid chromatography-mass spectrometry technology. According to the method, the HAase inhibitor can be rapidly and accurately screened from natural products.
Owner:NINGXIA MEDICAL UNIV

Fluorescent probe for ratio type detection of biogenic amine as well as preparation method and application of fluorescent probe

The invention provides a fluorescent probe for ratio type detection of biogenic amine as well as a preparation method and application of the fluorescent probe, and belongs to the technical field of fluorescent sensing. According to the A-D-A type organic fluorescent small molecular material, a conjugated structure containing a hydrogen bond binding site is adopted as a donor, an intramolecular charge transfer (ICT) state can be formed after an electron withdrawing group is introduced, and the purpose of fluorescence detection of biogenic amine is achieved through change of ICT properties before and after hydrogen bond interaction. The material has the advantages of high sensitivity, quick response, remarkable color change and reusability when being used for fluorescence detection of biogenic amines. Furthermore, a portable detection platform based on a smart phone is also constructed, and visual and quantitative detection of the food freshness is realized through digital analysis of the fluorescence image.
Owner:JILIN UNIVERSITY

A fluorescence sensing method for detecting vitamin B1 based on single-stranded DNA gold nanoclusters

The present invention discloses a method for detecting vitamin B1 using fluorescence sensing using single-stranded DNA gold nanoclusters. Using gold nanoclusters synthesized using single-stranded A30-ssDNA as a template as fluorescent probes, this method enables label-free, rapid, highly sensitive, and highly specific quantitative detection of vitamin B1 content in complex systems. Specifically, gold nanoclusters synthesized using single-stranded A30-ssDNA as a template serve as fluorescent probes, specifically detecting vitamin B1 content in a solution through changes in fluorescence intensity. This method is simple, rapid, and possesses a wide linear range, a low limit of detection, good sensitivity, and specificity, and has promising application prospects in food, pharmaceuticals, and other areas.
Owner:CHANGSHA FOOD & DRUG INSPECTION INST

Preparation method of portable paper-based ratiometric fluorescence sensor APBA-CsPbBr3 coated UiO-66 / Ru

The invention discloses a preparation method of a portable paper-based ratiometric fluorescence sensor APBA-CsPbBr3 at-UiO-66 / Ru, which comprises the following steps: 1, adding lead bromide and cesium bromide into N, N-dimethylformamide, then adding 5-bromovaleric acid and an oleylamine ligand, and stirring; 2, perfluorooctyltriethoxysilane is added, and a precursor solution is obtained; 3, adding zirconium chloride and terephthalic acid into N, N-dimethylformamide to obtain a homogeneous solution; 4, after heating, UiO-66 is obtained; 5, stirring the precursor solution, APBA, UiO-66 and tris (2, 2-dipyridyl) ruthenium chloride hexahydrate to obtain a composite material; and 6, dropwise adding the composite material solution into the filter paper. The APBA modified material is adopted as a recognition unit, the APBA modified material and the paper base construct a fluorescence sensing platform, visual quantitative analysis of oxytetracycline in water is achieved, and the device is convenient to carry, low in detection limit, high in anti-interference performance, easy and convenient to operate and suitable for on-site rapid detection of oxytetracycline.
Owner:CHANGAN UNIV

Fluorescent Sensing Composite Deep Electrode

The present application relates to a fluorescence sensing composite deep electrode, belonging to the field of medical devices, and comprising: a tube body, on the outer part of which several annular electrodes are sequentially arranged along the axial direction, each annular electrode is connected with an electrode wire, and one end of the tube body is a closed end; several optical fiber sensors are also arranged on the tube body, the optical fiber sensors include a detection end and a transmission end, and the detection end is used for detecting the fluorescence generated when a fluorescent indicator acts on metal ions during the neuron activity process; the ends of the electrode wires far away from the annular electrodes and the transmission ends of the optical fiber sensors are led out from the end of the tube body far away from the closed end. The fluorescence sensing composite deep electrode provided by the present application can collect and monitor the electroencephalogram signals, metal ion concentration and distribution in the monitoring area in real time, synchronously and in the same position in the fields of neurosurgery and cerebrospinal nerve function research, and improves the monitoring accuracy of nerve activities and the diagnosis accuracy and efficiency of the lesions of nervous system diseases.
Owner:BEIJING HUAKE HENGSHENG MEDICAL TECH CO LTD

Glucose hydrogel optical fiber sensor and preparation method thereof

The invention provides a glucose hydrogel optical fiber sensor and a preparation method thereof. The glucose hydrogel optical fiber sensor comprises an optical fiber and a glucose fluorescence sensing module fixedly carried on the end face of the optical fiber. Wherein the optical fiber comprises a double-layer hydrogel optical fiber which comprises an inner fiber core and an outer cladding. The glucose fluorescence sensing module is formed by fixing a glucose fluorescence probe containing a boric acid group and a terminal amino group through a covalent reaction between the amino group and an epoxy group in the hydrogel network. The glucose hydrogel optical fiber sensor has excellent performance, high sensitivity and good selectivity, and can realize stable and real-time detection of glucose concentration in a complex physiological environment. The sensor is flexible in structure and good in biocompatibility, does not depend on enzyme reaction, and avoids the problem of signal drift caused by enzyme inactivation; meanwhile, the sensor is good in repeatability, can be integrated with other optical sensing modules to realize multi-parameter synchronous monitoring, and is suitable for long-term dynamic monitoring application in vivo.
Owner:SICHUAN UNIV

Fluorescent sensing system based on nitrogen-doped carbon dots and machine learning and application of fluorescent sensing system in recognition of benzenediol isomers

The invention discloses a fluorescence sensing system based on nitrogen-doped carbon dots and machine learning and application of the fluorescence sensing system in recognition of benzenediol isomers, and belongs to the technical field of analytical chemistry and artificial intelligence. According to the invention, the undoped carbon dots and the nitrogen-doped carbon dots of which the properties change in a gradient manner are utilized to form the probe library, the carbon dots in the probe library can perform collaborative recognition, and weak differences between analytes are accumulated and amplified. Although the response difference of each single probe in a probe library to two similar isomers is very small, the tiny differences can be accumulated and amplified in a high-dimensional response vector due to the gradient change of the properties of the probes; the microscopic chemical property difference, which is difficult to directly measure, between the isomers is converted into the macroscopic high-dimensional data mode difference which can be easily identified by a machine, so that the accurate identification and classification of the structural similar substances and the mixture thereof are realized.
Owner:KUNMING UNIV OF SCI & TECH

Application of ascorbic acid-stabilized copper nano-cluster in p-nitrophenol detection

The invention discloses an application of a copper nano-cluster with stable ascorbic acid in detection of p-nitrophenol, the copper nano-cluster with stable ascorbic acid is used as a fluorescent probe, and the detection of p-nitrophenol is realized through a fluorescent sensing method. Due to the quenching effect of p-NP, the fluorescence intensity of the system is obviously reduced in the presence of p-NP. The p-NP concentration can be quantitatively detected by comparing the fluorescence intensity of the copper nano-cluster and the fluorescence intensity of a quenching system. The method is simple, sensitive and high in selectivity, does not need complex fluorescent dye labeling, shows remarkable potential for p-NP detection, and has a good application prospect in the aspects of food, medicine and the like.
Owner:CHANGSHA FOOD & DRUG INSPECTION INST

Targeted design and optimization method of organic pollutant fluorescence sensing array and signal acquisition device

The invention discloses a targeted design and optimization method for an organic pollutant fluorescence sensing array and a signal acquisition device. The overall information of the array is obtained in a high-throughput manner in a fluorescence imaging mode; based on an inner filter effect sensing mechanism, the model selection of a sensing material and an optical device is carried out by taking the absorption spectrum characteristic of a target organic detection object as a starting point, and sensing optimization is carried out based on the controllability of weak interaction between the sensing material and the target detection object. The use process comprises two aspects of sample library construction and modeling and detection application. The method comprises the steps of sensing material selection, model selection of an excitation light source and a signal acquisition device, light path arrangement design and sensing performance optimization. The detection device disclosed by the invention has proper detection precision and portability, can replace a precise fluorescence spectrophotometer, and realizes low-cost, high-throughput and real-time field detection of a water body.
Owner:JIANGSU UNIV

A method for screening β-galactosidase inhibitors using fluorescence sensing combined with affinity chromatography.

This invention provides a method for screening β-galactosidase inhibitors, belonging to the field of pharmaceutical technology. The first step of this method uses fluorescence sensing technology to rapidly identify natural products with β-Gal inhibitory activity. The principle is based on the fluorescence quenching property of p-nitrophenol (PNP) on sulfur quantum dots (SQDs); β-Gal catalyzes the hydrolysis of p-nitrophenyl-β-D-galactopyranoside (PNPG) to generate the specific product PNP; in the presence of β-Gal, PNPG can be enzymatically catalyzed to generate PNP, quenching the fluorescence of SQDs; when screened for β-Gal inhibitory activity, the fluorescence of SQDs can be restored. The second step uses affinity chromatography to capture components in samples with β-Gal inhibitory activity. This method involves immobilizing β-Gal on a support material, eluting with a solvent to obtain components that can bind to β-Gal, and then using liquid chromatography-mass spectrometry (LC-MS) to identify the components. This method can rapidly and accurately screen β-Gal inhibitors from natural products.
Owner:NINGXIA MEDICAL UNIV

A fiber optic fluorescence sensing system for food pathogens

The present invention relates to a fiber optic fluorescence sensing detection system for food pathogens, comprising a sensing module and a detection module. The sensing module includes a fiber optic fluorescence sensing module (optical components and a fluorescence reaction module) and an environmental sensing module. The optical components include an optical fiber array, a filter, a collimating lens, and an image sensor. The fluorescence reaction module includes an excitation light source and a multi-channel fluorescence reaction tank. The excitation light source irradiates the solution in the centrifuge tube in the multi-channel fluorescence reaction tank to stimulate a fluorescence signal. The fiber optic array transmits the fluorescence signal. The filter selects the fluorescence signal. The collimating lens amplifies and focuses the fluorescence signal. The image sensor is used to image the fluorescence signal. The environmental sensing module includes several sensors that collect environmental data. The detection module obtains a fluorescence intensity image obtained by the image sensor and environmental data collected by the environmental sensing module, and performs pathogen detection on the solution of the food sample. The present invention can effectively detect food pathogens.
Owner:JIANGNAN UNIV

Copper halide coordination material with pressure stimuli-responsive luminescence property and preparation method and application thereof

The invention provides a copper halide coordination material with pressure stimulation response luminescence performance and a preparation method and application thereof, and belongs to the technical field of luminescent materials. The organic phosphine ligand is constructed by the functional organic phosphine ligand containing the furan or thiophene skeleton and the copper halide through coordination, has excellent structural stability and light-emitting response performance, particularly shows a remarkable optical regulation behavior under a pressure stimulation condition, and is suitable for the fields of high-pressure fluorescence sensing or strain sensing devices and the like. Various novel ligands are provided, corresponding copper halide compounds are systematically constructed, and the structure-function relationship between the material structure and the high-pressure optical response of the material structure is established.
Owner:HEILONGJIANG UNIV

Coumarin-linked conjugated porous polymers, methods of making and applications thereof

This invention discloses a coumarin-linked conjugated porous polymer, its preparation method, and its applications. The preparation method includes: subjecting a homogeneous mixture containing o-hydroxybenzaldehyde monomer, phenylacetonitrile monomer, solvent, and catalyst to a Knauven-Gail condensation reaction to obtain the coumarin-linked conjugated porous polymer. The coumarin used in this invention to prepare the coumarin-linked conjugated porous polymer is a highly planar molecule. Its full conjugation extends the absorption wavelength to the visible light region and enhances π-electron excitation, thus exhibiting strong photosensitivity. The resulting series of coumarin-linked highly conjugated nanoarray conjugated porous polymers possess high porosity and a fully conjugated structure, making them highly efficient for applications in photocatalysis, fluorescence sensing, and optoelectronic devices.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Synthesis and application of a concentration-solvent-dependent platinum complex luminescent material

The present invention is applicable to the fields of stimulus-responsive light-variable materials, catalysis, fluorescence sensing, biomolecule labeling, information processing and storage, and anti-counterfeiting technology, and provides the synthesis and application of a concentration-solvent-dependent platinum complex luminescent material. The preparation process of the present method is simple and easy to purify. The obtained ionic metal Pt(II) complex phosphorescent material with concentration- and solvent-dependent luminescence changes is stimuli-responsive to solvent and concentration.
Owner:安徽中天新材料科技股份有限公司

Trisemitting mofs and smartphone-based tryptamine detection method

The application discloses a tryptamine detection method based on triple emission MOFs and a smart phone. A rare earth metal organic framework (AP-Eu) is used as a luminescent matrix, and a fluorescent guest molecule fluorescein-5-isothiocyanate (FITC) is post-modified to obtain a ratio fluorescent material with triple emission characteristics. Competitive absorption of ligands and tryptamine, pH response of FITC and hydrogen bonding are used to realize fluorescence signal regulation, and then high-sensitivity and high-selectivity fluorescence recognition of tryptamine is realized. The method is further applied to quantitative detection of tryptamine in beer samples, visualization detection of foam and on-site rapid detection assisted by a mobile phone APP. The application provides a safe and efficient tryptamine detection and fluorescence sensing method, and significantly improves detection accuracy and on-site applicability.
Owner:YANCHENG INST OF TECH

Self-feedback intelligent electrochemical wastewater treatment platform and construction method thereof

The invention discloses a self-feedback intelligent electrochemical wastewater treatment platform and a construction method thereof. The platform modularly integrates an electrochemical water treatment unit, a terephthalic acid probe molecular fluorescence sensing unit, a signal acquisition data processing unit and an electro-hydraulic linkage online control unit. All the units work cooperatively, and the electrochemical water treatment unit generates strong oxidizing hydroxyl radical mineralized pollutants; the fluorescence sensing and data processing unit is used for converting. OH specificity into a fluorescence signal by utilizing probe molecules and mapping the fluorescence signal into. OH steady-state equivalent concentration in real time; and the online control unit implements a model prediction control strategy based on concentration feedback, dynamically adjusts the current density, the electrode potential and the wastewater flow, and realizes real-time adaptive matching of the interface mass transfer and the. OH generation rate. According to the invention, electrogenerated. OH on-line monitoring and dynamic closed-loop optimization of operation parameters are realized, deep mineralization, low energy consumption and long-term stable operation are realized, and the method is suitable for engineering and intelligent operation of electrochemical advanced oxidation treatment of industrial wastewater.
Owner:HARBIN INST OF TECH