50 results about "Tetraphenylethylene" patented technology

The invention discloses a mitochondrial / lysosome dual-targeting viscosity response AIE probe as well as a preparation method and application thereof. According to the probe, tetraphenylethylene (TPE) is used as an AIE light-emitting framework, and two flexible side chains containing hydrophilic units are introduced by utilizing the excellent structural modifiability of the TPE. The tail end of each side chain is modified with a trimethylamine group, quaternary ammonium salt cations derived from the trimethylamine group have localized positive charges, and combination with water molecules can be enhanced through ion-dipole interaction, so that the water solubility and biocompatibility of the molecules are effectively improved. Based on the design, the invention provides the AIE polymer probe which is constructed by taking TPE as a core and taking an amphiphilic flexible chain as a functional unit. The probe can establish a three-dimensional linear relationship among drug action time-regional viscosity-fluorescence lifetime (t-eta-tau) by capturing fluorescence lifetime signals inside and outside cells, so as to realize visual detection and quantitative analysis of average viscosity change of mitochondria and lysosome in the mitochondrial autophagy process.

The invention discloses a solid fluorescent material based on a tetraphenylethylene derivative and application of the solid fluorescent material in water content detection. On the basis of the special structure and functional design of a hydrogen bond organic framework, the spatial distribution and interaction mode of structural solvents (such as dimethyl sulfoxide and DMSO) and adsorption solvents (such as methanol, water and acetone) in the framework are accurately controlled, and on the premise that the integrity of a crystal structure is kept, the preparation method is simple and easy to implement. And reversible exchange and real-time optical monitoring of solvent molecules in the pore channels are realized. The material can generate obvious fluorescence color change (467-602nm) along with the change of the environmental water content, and has the advantages of high response speed, high sensitivity, good thermal stability and good recycling performance.

This invention provides temperature-responsive fluorescent nanomaterials, their preparation methods, and applications. The temperature-responsive fluorescent nanomaterials are nanoparticles formed from the compound TPE-CSO in an aqueous phase. The TPE-CSO compound comprises hydrophobic dinuclear fluorescent groups tetraphenylethylene (TPE) and cyanostyl styrene (CS) as the parent core, and temperature-responsive oligoethylene glycol (OEG) linked by benzyloxy groups as the hydrophilic chain. Furthermore, this invention also provides a temperature-responsive continuous light-harvesting system. This system constructs a reversible temperature-responsive light-harvesting system by loading the temperature-responsive fluorescent nanomaterials with hydrophobic dyes Rh6G and SR101, utilizing fluorescence resonance energy transfer. This system, as a catalyst for photocatalytic oxidative cracking reactions, exhibits a catalytic efficiency of 97%. This technology has great potential in preparing tunable luminescent catalytic materials and simulating the influence of temperature on photosynthesis, demonstrating broad application prospects.

The present application relates to the technical field of force-induced color-changing materials, in particular to an arylmethanone derivative containing a tetraphenylethylene and carbazole unit, a preparation method thereof and application thereof. The structural formula of the arylmethanone derivative containing a tetraphenylethylene and carbazole unit is shown in the following: after being subjected to an acting force, the arylmethanone derivative not only has obvious color change, but also has significantly increased fluorescence emission intensity, can realize high-contrast fluorescence recording, and can be widely applied to inkless writing.

This invention discloses a chiral Pt metal-organic complex based on chiral Pt metal coordination, its preparation method, and its applications, belonging to the field of supramolecular chemistry. This method transfers chirality from the metal node to the tetraphenylethylene plane through metal coordination, forming a helical structure during crystallization to obtain a high-performance circularly polarized luminescent material. The introduction of a chiral binaphthyl group solves the problem of excessive distance between the chirality and the luminescent unit. Rigid coordination and steric effects are used to directionally induce a helical conformation in tetraphenylethylene, obtaining a single chiral molecule. Furthermore, this method connects the chiral group via covalent bonds and uses aggregation-induced emission molecules instead of traditional dyes to prepare materials with both a large luminescence asymmetry factor and high fluorescence quantum yield, expanding the application range of metal-organic cages.

The application discloses a luminescent coordination polymer crystal material based on a tetraphenylethylene pyridine ligand and a preparation method and application thereof, the chemical formula of the luminescent coordination polymer crystal material is [Cu(L)SCN.DMSO]n, wherein L is a 4.4'-[(2,2-diphenyl ethylene)di-4.1-phenylene]bis[pyridine] ligand, and n is an arbitrary value; wherein a Cu ion forms a two-dimensional structure with the 4.4'-[(2,2-diphenyl ethylene)di-4. n The crystal material can be used for fluorescence quenching detection of water-phase methyl orange; compared with the prior art, the crystal material is simple and reliable in application, the quenching constant of the crystal material for detecting water-phase methyl orange is as high as 1.9*10 6 M ‑1 , and the detection limit is as low as 0.019 mu M, so the crystal material is a luminescent coordination polymer crystal material for extremely sensitive detection of methyl orange at present and has a wide application prospect.

The application belongs to the field of synthesis of organic semiconductors, and discloses a narrow-band emission pyrene-based blue light material and a preparation method and application thereof.The narrow-band emission pyrene-based blue light material has a structure as shown in formula (1).The pyrene-based organic functional light-emitting material prepared by taking the pyrene intermediate of the application as a precursor is prepared by introducing a biphenyl and triphenylamine or tetraphenylethylene at positions 1 and 3 of the pyrene;in the case of triphenylamine as a strong electron-donating group, the biphenyl units substituted at different positions are used to build the molecular conformation through space conjugation, and the tetraphenylethylene unit plays an important role in realizing the AIE characteristics.The preparation method is simple, the reaction condition is mild, the yield is high, the prepared material has good thermal stability, (deep) blue light emission, the solid quantum yield is greater than 0.7, the highest can be up to 0.9, and the maximum half-peak width is between 20-50 nm.The application is suitable for application scenarios such as high-definition display light-emitting devices.

The invention relates to the technical field of photocatalytic materials, and particularly discloses an efficient FRET-ISC synergistic composite photosensitive nano material based on aggregation-induced emission (AIE) matrix coating, a preparation method of the nano material and application of the nano material in photocatalytic degradation of organic pollutants. The material comprises an AIE characteristic matrix (such as tetraphenylethylene), an energy donor dye (such as coumarin 6) dispersed in the matrix and an energy acceptor dye (such as iodo-boron dipyrromethene) with a heavy atom effect, a donor emission spectrum and an acceptor absorption spectrum are overlapped, so that the synergistic effect of fluorescence resonance energy transfer and intersystem crossing (FRET-ISC) is realized, and the fluorescence intensity of the material is improved. The generation efficiency of singlet oxygen (1O2) is obviously improved. The material is prepared by adopting a microfluidic anti-solvent precipitation method, water-phase dispersed nano-particles (the particle size is 100-400 nm) are formed, the singlet oxygen quantum yield of the material reaches 0.75, the degradation rate constant (0.025 min <-1 >) of the material to rhodamine B is 4.3 times that of a single IBDP system, the degradation rate in 2 hours exceeds 90%, and the activity is kept above 80% after the material is recycled for 5 times. The invention solves the problems of aggregation quenching (ACQ) and narrow spectrum utilization of the traditional photosensitizer, has high stability, wide spectrum response and efficient catalytic ability, and is suitable for degrading organic pollutants (such as RhB, methylene blue and tetracycline) in a water phase.

This invention relates to the field of fluorescent materials technology, disclosing near-infrared I-region photosensitizers, their preparation methods, and their applications in bioimaging. The near-infrared I-region photosensitizers include TPE-AT-DPTQ, TPE-EDOT-DPTQ, and TPE-HEXOT-DPTQ, possessing a D-π-A-π-D molecular structure. They utilize tetraphenylethylene as the electron donor, sterically hindered π-bridges (3-hexylthiophene, 3,4-ethylenedioxythiophene, and 3,4-dihexyloxythiophene) as bridging units, and DPTQ as the electron acceptor. By introducing long alkyl side chains, these near-infrared I-region photosensitizers significantly increase the intermolecular distance in the aggregated state, effectively preventing excessively dense molecular packing and further enhancing the AIE properties and fluorescence brightness of the molecules.

This invention discloses a self-fluorescent, high melt strength modified polypropylene, its preparation method, and its applications. The first step involves synthesizing polypropylene-A containing bromophenyl groups in its side chains, followed by the synthesis of polypropylene-B containing styrene groups in its side chains. Finally, polypropylene-A and polypropylene-B undergo a substitution reaction of their side chain groups under the action of a catalyst to generate a modified polypropylene with tetraphenylvinyl groups exhibiting aggregation-induced emission. The synthesized modified polypropylene product not only exhibits fluorescence but also has a significantly higher melt strength than ordinary polypropylene, making it suitable for manufacturing lightweight, heat-insulating polypropylene products such as foamed polypropylene.

The invention relates to the technical field of synthesis of biodegradable polyester high polymer materials, in particular to a preparation method of a tetraphenylethylene rigid structure modified PBAT copolyester material, tetraphenylethylene and PBAT are combined, so that the material has a certain fluorescence property, meanwhile, the crystallinity and mechanical property of the material can be improved, and the material has a good application prospect. The application range of the material is expanded; in order to avoid low reaction activity of 4, 4 '-(2, 2-diphenylethyl-1, 1-diyl) dibenzoic acid and alcohol caused by complex structures of 4, 4'-(2, 2-diphenylethyl-1, 1-diyl) dibenzoic acid and 1, 4-butanediol, the esterification reaction is firstly subjected to branched esterification and then is mixed, so that the yield is increased.

The invention discloses a protamine mediated fluorescence resonance energy transfer (FRET) sensing system and application thereof. According to the protamine, a tetraphenylethylene-derived anionic molecule (4, 4 '-(((1, 2-stilbene-1, 2-disubunit) bis (4, 1-phenyl)) bis (aza-disubunit)) bis (4-sodium oxobutyrate)) is electrostatically enriched on the surface of the protamine, and a tetraphenylethylene group emits fluorescence after being aggregated and acts as an energy donor; furthermore, cationic dye (4-(4-dimethylaminostyryl)-1-methyl iodide pyridine) is added as an energy receptor, and a fluorescence resonance energy transfer (FRET) system is constructed. Through construction of the FRET system, long-wavelength fluorescence emission can be obtained, high-sensitivity detection of trypsin and screening of enzyme preparations are achieved, and the FRET system is expected to be applied to complex media.

This invention belongs to the field of fluorescent probes and discloses a probe that can simultaneously respond to ClO ‑ Tetraphenylethylene-thiophene hybrid fluorescent probes with varying viscosity and their preparation methods and applications. The probes utilize a tetraphenylethylene-aromatic ring hybrid structure as the chromophore, with dinitrile isophorone and diaminomaleitrile as ClO₂ groups, respectively. ‑ Based on the recognition group, fluorescent probe molecules were designed and synthesized, with the following general structural formula: This type of fluorescent probe is effective against ClO₂. ‑ It exhibits rapid response, high specificity, and high sensitivity, with a strong responsiveness to viscosity, and can simultaneously detect ClO. ‑ Changes in viscosity levels and the environment provide new insights and potential detection tools for the early diagnosis of atherosclerosis.

This invention relates to the field of cement-based materials technology, and in particular to the application of fluorescent dyes in determining the pore pressure of cement-based materials under different environments. The invention first dissolves a fluorescent dye in an organic solvent and water to obtain a fluorescent dye solution. The cement-based material is then mixed with water to obtain a paste. The fluorescent dye solution is then added to the paste, which is shaped and cut into thin slices. These slices are further placed under different environments, and the fluorescence intensity is measured using a fluorescence spectrometer to determine the pore pressure of the cement-based material in different environments. Higher fluorescence intensity indicates greater pore pressure. This invention uses the mechanochromic properties of tetraphenylethylene to determine the pore pressure of cement-based materials, which is convenient, quick, and provides good visual results.

The invention discloses a tetraphenylethylene-based branched anion exchange membrane and a preparation method and application thereof, tetraphenylethylene is used as a branching agent, the tetraphenylethylene, an aromatic monomer and piperidone are subjected to superacid catalytic polymerization to prepare polyaryl piperidine with a star-shaped branched structure, and then quaternary ammonium functionalization and post-treatment are performed to obtain the branched anion exchange membrane (AEM). The branched structure can reduce the stacking density of polymer chains in the membrane, form a high-proportion free volume to improve the water absorption rate, reduce the OH <-> transmission resistance and improve the ionic conductivity; the rigid aromatic branched skeleton can inhibit excessive water swelling of the membrane; the free volume fraction of the membrane can be optimized by regulating and controlling the molar percentage of tetraphenyl ethylene in the copolymerized aromatic monomer, the AEM with high ionic conductivity and dimensional stability is obtained, and the AEM can be applied to an anion exchange membrane water electrolysis cell.

The invention discloses a titanium-doped zirconium MOF molecularly imprinted electrochemical luminescence sensor for high-sensitivity detection of HER2, and a preparation and detection method thereof, and belongs to the technical field of detection. A titanium-doped zirconium-based metal organic framework (Ti-Zr-TPE MOF) is dispensed on the surface of a working electrode to serve as a luminescent material, Ti-Zr-TPE realizes luminous intensity multiplication in an aggregation state compared with Zr-TPE by further enhancing an intra-molecular motion limited (RIM) mechanism, and a luminous body preparation process, co-reactant screening and detection parameters (such as potential scanning rate and pH value) are systematically optimized, so that the luminous intensity of Ti-Zr-TPE is improved. A set of stable Ti (at) Zr-TPE luminescent system is formed. Meanwhile, dopamine (DA) is used as a functional monomer, and HER2 is subjected to molecular imprinting through a molecular imprinting technology, so that the electrochemical luminescence sensor of a quenching system is constructed. The luminescent material based on the novel tetraphenyl ethylene (TPE) derivative has the advantages of high luminescent intensity, low background signal, high stability and specificity, simplicity and convenience in operation and the like, and has obvious advantages compared with a previously developed sensor for detecting HER2. According to the invention, quantitative detection of HER2 can be realized, and an innovative solution is provided for clinical early warning.

The present application provides a machine learning assisted ratio fluorescent sensing peptide hydrogel and a preparation method thereof, wherein the ratio fluorescent sensing peptide hydrogel is obtained by crosslinking modified polylysine modified with different fluorescent molecules and polyglutamic acid; when the ratio fluorescent sensing peptide hydrogel of the present application is exposed to active oxygen, the thione group is cleaved, resulting in the separation of the fluorescent molecule from the polymer and the aggregation in the water environment. This process leads to the quenching of coumarin 7 and the aggregation of tetraphenylethylene, thereby causing the change of the excitation light intensity ratio and the corresponding change of the fluorescence color, so that the active oxygen level can be monitored in real time and quantitatively through machine learning assistance, and the inflammation degree of the wound can be accurately reflected, thereby providing valuable data for the closed-loop treatment of chronic diabetic wounds.

The application discloses a kind of metal organic framework films, preparation method and application thereof, it is related to antibiotic and mycotoxin removal technical field.The preparation method includes the following steps: metal source and organic ligand are added into solvent and mixed uniformly, obtain mixed solution;After using base material adsorbs the mixed solution, by in-situ growth method, in-situ growth polymerization metal organic framework crystal is carried out on the internal fiber surface of the base material, and the metal organic framework film is obtained;The metal source is zirconium salt;The organic ligand is tetra [4- (3,5-dicarboxyphenyl) ] tetraphenyl ethylene.This metal organic framework film can realize the high selectivity adsorption of antibiotic and mycotoxin by specific chemical structure and chemical composition, with the technical advantages of short antibiotic and mycotoxin adsorption time, high effect, low economic cost.

This invention provides a method for efficiently and rapidly oxidizing NADH, thereby destroying NADH and NAD. + New materials for interphase conversion equilibrium processes, through two steps S N In a reaction design, an octacational molecular cage based on tetraphenylethylene (TPE)-alkenylpyridine was synthesized for constructing a biomimetic catalyst. The TPE unit endows the molecular cage with excellent fluorescence properties and the ability to adaptively switch chirality. The cavity of the molecular cage allows it to bind FAD molecules through host-guest interactions, thus achieving a dual response of FAD fluorescence and circular dichroism (CD) spectroscopy. The octacational nature not only ensures good water solubility of the molecular cage, but also promotes the formation of a highly efficient catalyst for the oxidation of NADH to NAD. + The oxidation process exhibits highly efficient catalytic activity, with a time-to-factor (TOF) frequency reaching 29.4 min. ‑1 This effectively solves the technical problem of the low conversion frequency in the current NADH catalytic oxidation process, which prevents the achievement of efficient catalysis for NADH oxidation.

The invention provides a hyperbranched polybenzene, preparation method and use thereof. The method includes: under an inert gas atmosphere, a monomer with two internal acetylenyl groups undergoes polymerization reaction in a solvent in the presence of a catalyst to obtain the hyperbranched polybenzene. The monomer in the polymerization reaction is a monomer with internal acetylenyl groups, and the catalyst is a nonmetallic catalyst p-toluenesulfonic acid. The polymerization reaction has simple conditions, is convenient and environmentally friendly, and overcomes the problem that the catalyst residue caused by the use of metal catalyst in conventional cyclotrimerization reaction, which affects the polymer properties. Due to the typical aggregation-induced emission (AIE)-active tetraphenyl ethylene units, the tetraphenylethylene-containing hyperbranched polymers of the present invention has high fluorescence quantum yields in the aggregation state and has fully conjugated structures. The hyperbranched polybenzenes can be used as chemical sensors and have an application prospect for polymer light-emitting diodes.

The application discloses a dioxobenzothiophene-tetraphenylethylene derivative, a preparation method and application thereof, and belongs to the technical field of organic synthesis. 4-(1,2,2-triphenylvinyl) benzaldehyde or a derivative thereof, benz[b]thiophene-3(2)H-ketone-1,1-dioxide and a catalyst are dissolved in a solvent, and a dioxobenzothiophene-tetraphenylethylene derivative is prepared by heating reaction at a high temperature. The dioxobenzothiophene-tetraphenylethylene derivative, the preparation method and the application thereof have the advantages that the preparation method is simple, the operation is simple and convenient, the cost is low, the prepared dioxobenzothiophene-tetraphenylethylene derivative has fluorescence characteristics, and the dioxobenzothiophene-tetraphenylethylene derivative can be applied to the fields of anti-counterfeiting, textile and garment printing and dyeing, cosmetics, pressure sensor materials, information security and the like. Meanwhile, the synthesis method can be used for synthesis in the fields of fine organic chemical industry such as luminescent materials and printing and dyeing technology.

A method for ratiometric detection of putrescine using PtPd NPs@TPE fluorescent nanozymes. This invention first utilizes mesoporous platinum-palladium nanoparticles (PtPd NPs) doped with tetraphenylethylene (TPE) to obtain fluorescent nanoparticles (PtPd NPs@TPE) with oxidase-like activity, which can produce blue fluorescence under 365 nm ultraviolet light excitation. Secondly, this invention utilizes the antioxidant properties of putrescine solution to inhibit the formation of 2,3-diaminophenazine (DAP), an oxidation product, during the oxidation of o-phenylenediamine (OPD) by PtPd NPs@TPE, thereby reducing the DAP content. Based on the relationship between putrescine concentration and the colorimetric intensity of DAP, and the ratio of the yellow fluorescence intensity of DAP at 552 nm to the blue fluorescence intensity of PtPd NPs@TPE at 442 nm, a novel ratiometric fluorescence method for detecting putrescine is constructed. This method can be used to detect actual samples such as dried bean curd, with a detection limit as low as 0.0025 μg / mL.

The invention discloses a near-infrared AIE fluorescent probe based on a tetraphenylethylene-thiophene-indolium structure as well as a preparation method and application of the near-infrared AIE fluorescent probe. According to the preparation method, 5-(4-(1, 2, 2-triphenyl vinyl) phenyl) thiophene-2-formaldehyde (a reactant A) and 1-ethyl-2, 3, 3-trimethyl-3H-indolium iodide (a reactant B) are taken as raw materials, and the tetraphenyl ethylene-thiophene-indolium derivative (formula I) is prepared. The tetraphenylethylene-thiophene-indolium derivative has the characteristics of near infrared emission and aggregation-induced emission (AIE), can be used for real-time biological imaging and degradation of mutant p53 protein, and has a good application prospect in the aspect of developing tumor diagnosis and treatment integrated products.

The invention relates to a high-tensile-strength fluorescent self-repairing polyolefin material as well as a preparation method and application thereof, and belongs to the technical field of functional polymer materials. In order to solve the problems of poor mechanical properties and lack of self-repairing function of the existing fluorescent polymer, the invention adopts a phosphine-palladium sulfonate catalyst to efficiently catalyze binary or ternary polymerization of ethylene, a coumarin / anthracene / carbazole / triphenylamine / tetraphenylethylene / pyrene-containing polar fluorescent monomer and dicyclopentadiene (DCPD) to obtain the self-repairing polymer. The functional unit is successfully embedded into a polyolefin main chain through a covalent bond. The material shows excellent comprehensive performance: the tensile strength of the material reaches up to 46.79 MPa, and the elongation at break can reach 732%, which are far better than those of similar materials; under the ultraviolet light of 365 nm, the coating has the strong fluorescence characteristic and the efficient self-repairing capacity, and scratches can be completely healed within 30 minutes; in addition, high-resolution patterning can be realized by utilizing the photoinduced fluorescence quenching effect. The invention provides a brand new strategy for preparing an intelligent polyolefin material with excellent mechanical property, damage visualization and self-repairing capability, and has important application value in the frontier fields of information encryption, intelligent sensing, flexible electronics and the like.

The invention discloses a heptamethine cyanine photosensitizer with controllable pyroptosis intensity as well as a preparation method and application of the heptamethine cyanine photosensitizer. The method comprises the following steps: by taking IR808 as a parent nucleus, firstly, introducing tetraphenylethylene (TPE) into a meso-position to remarkably improve intersystem crossing efficiency, and converting the IR808 with negative pyroptosis into T808 with positive pyroptosis; then, PEG chains with the molecular weights of 550 Da, 1000 Da and 200 Da are connected to carboxyl on one side of the T808, and PT550, PT1000 and PT2000 are obtained. Along with the extension of a PEG chain, the hydrophilicity of the molecule is gradually enhanced, and the intensity of inducing the pyroptosis of tumor cells under the irradiation of 808 nm near-infrared light is PT550gt in sequence; t808gt, T808gt; pT1000 < gt >; and PT2000, so that accurate gradient regulation and control of pyroptosis activity are realized. The series of photosensitizers have excellent phototherapy performance and can be used for phototherapy of solid tumors.

The application discloses a tetraphenyl ethylene derivative and an organic electroluminescent device containing the same. The tetraphenyl ethylene derivative has a structure as shown in formula (1). The organic electroluminescent device prepared by using the tetraphenyl ethylene derivative provided by the application as a light-emitting material of the organic electroluminescent device has a low turn-on voltage and high blue light color purity.

The invention discloses a method for detecting streptomycin (STR) in milk based on a catalytic hairpin assembly signal amplification aggregation-induced emission fluorescence sensor and application, and belongs to the technical field of food safety detection. According to the invention, a tetraphenylethylene (TPE) derivative TPE-Py is wrapped in silicon dioxide nanoparticles (SiO2 NPs) to construct TPE-coated SiO2 NPs with AIE characteristics, and fluorescence signal amplification is realized by triggering CHA; then gold nanoparticles (AuNPs) are reduced on the DNA, and a fluorescent nano sensor AuNPs (at) TPE (at) SiO is constructed to quench fluorescence of the TPE (at) SiO; quantitative detection of STR is realized by constructing a linear relation between AuNPs (at) TPE (at) SiO2 and STR concentration, and the AuNPs (at) TPE (at) SiO2 is successfully applied to milk samples. The linear range of the fluorescent nano sensor is 3.75-105 nM, the lowest detection limit (LOD) is 1.12 nM, and the fluorescent nano sensor has good anti-interference capability, specificity and stability; the method is simple and easy to implement, the sensor is good in detection performance and high in detection efficiency, and a good analysis method is provided for monitoring of STR drug concentration.

The invention discloses a dioxybenzothiophene-tetraphenylethylene derivative and a preparation method and application thereof, and belongs to the technical field of organic synthesis.The preparation method comprises the steps that 4-(1, 2, 2-triphenyl vinyl) benzaldehyde or a derivative thereof, benzo [b] thiophene-3 (2) H-ketone-1, 1-dioxide and a catalyst are dissolved in a solvent, a reaction is conducted, and a mixture is obtained; and raising the temperature and heating to react to prepare the benzothiophene dioxide-tetraphenyl ethylene derivative. According to the dioxobenzothiophene-tetraphenyl ethylene derivative as well as the preparation method and the application thereof, the preparation method is simple, the operation is simple and convenient, the cost is low, and the prepared dioxobenzothiophene-tetraphenyl ethylene derivative has a fluorescence characteristic; the method can be applied to the fields of anti-counterfeiting, textile and garment printing and dyeing, cosmetics, pressure sensor materials, information security and the like, and meanwhile, the synthetic method can be used for synthesis in the fine organic chemical fields of luminescent materials, printing and dyeing technologies and the like.

This application discloses a two-photon luminescent micro / nanomaterial, its preparation method, and its application. The two-photon luminescent micro / nanomaterial has the chemical formula shown in Formula I: [(Hdma)K(H2L)] n Formula I; wherein Hdma is a dimethylamine countercation, and H2L is a semi-deprotonated tetraphenylvinylcarboxylic acid ligand. The micro / nano luminescent material has a particle size distribution of 200 nm to 200 μm, exhibiting strong blue fluorescence and a strong two-photon emission effect. Compared with currently commercialized fingerprint recognition technologies, the two-photon luminescent micro / nano material described in this application has advantages such as faster response speed, higher resolution, stronger three-dimensional tomography capability, and greater imaging depth, making it of significant commercial application value in fields such as national defense security, financial security, and criminal investigation.

The invention provides a fluorescent single-particle membrane device for detecting nerve agent simulant diethyl chlorophosphate and a preparation method of the fluorescent single-particle membrane device. According to the single-particle film device, a lattice structure is formed on a glass substrate by utilizing photoresist or an ultraviolet curing adhesive material through mask exposure, and a tetraphenylethylene covalent organic framework material is loaded by means of a rubber substrate; and then the two are attached, positive pressure is applied, heating is conducted, the photo-curing material in the molten state is made to adhere to the frame material, and finally the single-particle film is formed. After the device is in contact with a diethyl chlorophosphate atmosphere and a methanol solution thereof, the fluorescence of the device at 543 nm is specifically quenched, so that high-sensitivity, high-selectivity, on-site rapid and visual detection of diethyl chlorophosphate is realized.