397 results about "Pyrene" patented technology

The invention belongs to the technical field of novel fluorescent materials, and particularly discloses application of a mechanical color change pyrenyl derivative in latent fingerprint fluorescence imaging and extraction. The mechanical color-changing pyrenyl derivative can be selectively combined with fingerprint residual substances under the excitation of ultraviolet light through the unique fluorescence response characteristic, so that potential fingerprints form high-contrast fluorescence imaging on smooth or rough surfaces (such as glass, metal, plastic and the like), and the mechanical color-changing pyrenyl derivative is compatible with conventional camera equipment to realize rapid acquisition. The compound design is based on a modular synthesis route, and has the advantages of simple and convenient synthesis process, controllable raw material cost, high reaction yield and the like. The product has excellent thermal stability and chemical stability, can be stored at normal temperature and does not need special treatment, and the practical application threshold is greatly reduced. Compared with a traditional fingerprint developing technology, the method has remarkable breakthroughs in the aspects of sensitivity, substrate adaptability and operation convenience, and an efficient, economical and environment-friendly novel solution is provided for the fields of criminal investigation, forensic identification and the like.

The phosphazene covalent organic framework (COF) is a material with high efficiency to improve the removal of iodine from nuclear waste. The COF can be obtained by a solvothermal reaction of hexa(4-formyl-phenoxy)cyclotriphosphazene and 1,3,6,8-tetra(aminophenyl)pyrene. The resulting three-dimensional phosphazene COF has iodine uptakes as high as 9.4 g g−1 due to its 3D framework with higher specific surface areas and interconnected channels.

The invention provides an imine covalent organic polymer and a preparation method thereof, a negative electrode material and a potassium ion battery. The preparation method comprises the following steps: carrying out first mixing on raw materials including a carbonyl-containing first organic compound, an amino-containing second organic compound and a dispersion liquid to obtain a mixed liquid; carrying out in-situ polymerization reaction on the mixed solution to obtain an imine covalent organic polymer; wherein the first organic compound is nitro-substituted or non-substituted pyrene-4, 5, 9, 10-tetraketone; the second organic compound is selected from any one or more of C6-C12 aromatic amine compounds, C6-C12 heteroaromatic amine compounds and amino-substituted C4-C6 cyclic compounds, and the number of amino groups in each molecule of the second organic compound is greater than or equal to 2. The covalent organic polymer obtained by the preparation method can solve the problem that the structure is easily stacked and is easily dissolved in electrolyte to be damaged when the covalent organic polymer is used as a negative electrode material.

The present invention discloses an alkali-resistant microbial bacterium PDC-1 and its application. The present invention screens and isolates PDC-1 strain from the soil of a coal gangue stockpile in a coal mine in Shandong, China, which can utilize naphthalene, phenanthrene, anthracene or pyrene as the sole carbon source and has tolerance to heavy metals. The strain of the present invention is capable to degrade various PAHs with the presence of heavy metals. The strain is alkali resistant, simple to cultivate, and has a good application in the bioremediation of polycyclic aromatic hydrocarbons and heavy metal contaminated sites.

The invention discloses a preparation method and application of a magnetic biochar-loaded bacterium composite functional material, magnetic biochar (MBC) is used as a carrier to load and fix Achromobacter denitrificans BP1 (Achromobacter denitrificans BP1, the NCBI login number is CP154792), and a magnetic biochar-loaded functional bacterium (MBC-coated BP1) is obtained. The invention relates to a water and soil purifying agent which is used for removing pollutants in water and / or soil, the pollutants comprise polycyclic aromatic hydrocarbons (PAHs) and / or heavy metals (HM) and the like, benzo [a] pyrene (BaP) and phenanthrene (Phe) in the soil can be efficiently degraded, Cr (VI) is removed, nitrate (NO3 <->) is metabolized, the soil nutrient level (organic matters, nitrogen, phosphorus and the like) can be increased, the diversity and structural functions of soil microbial communities are improved, and the water and soil purifying agent can be used for purifying water and / or soil. And a green and efficient repairing material and a technical support are provided for a compound pollution complex site.

The invention provides an application method of a multi-active-point pyrenyl fused ring compound in a primary battery, which comprises the following steps: preparing a positive electrode by taking the multi-active-point pyrenyl fused ring compound as a positive electrode active material, and assembling the primary battery by taking alkali metal as a negative electrode and an alkali metal salt solution as electrolyte. The performance of the multi-active-site organic positive electrode material in a primary battery is greatly improved through active substance in-situ carbon loading, a solid polyhydroxy proton donor additive and a liquid proton donor additive. The organic matter is used as a positive electrode, alkali metal is used as a negative electrode, an alkali metal salt solution is used as electrolyte, multi-electron reduction of organic functional groups can be realized in a battery, and the specific capacity and the energy density of the organic electrode material are greatly improved. The organic positive electrode material has the advantages of high energy density, low cost, easiness in large-scale production and the like, and has high application value.

The invention relates to the technical field of materials and advanced oxidation, and discloses a covalent organic framework catalyst with a benzothiadiazole structure, a preparation method of the covalent organic framework catalyst and application of the covalent organic framework catalyst in peroxymonosulfate (PMS) activation and organic pollutant degradation. The preparation method of the covalent organic framework catalyst comprises the following steps: adding precursors 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 2, 7-dibenzaldehyde-benzothiadiazole into a mixed solvent composed of o-dichlorobenzene and n-butyl alcohol, carrying out a reaction by using acetic acid as a catalyst through a solvothermal method, and after the reaction, carrying out multiple times of centrifugal washing and drying to obtain the covalent organic framework catalyst. The catalyst shows excellent performance in the aspect of activating PMS to degrade organic pollutants, the degradation rate constant of bisphenol A reaches 1.68 min <-1 >, and 100% removal can be achieved within 5 minutes. Meanwhile, the catalyst has the advantages of no secondary pollution, strong anti-interference performance, reusability and the like. Compared with a traditional method, the catalyst has high PMS activation efficiency, the catalysis process is energy-saving and environment-friendly, the operation is simple and convenient, the preparation process is simple and feasible, and a new solution is provided for efficient degradation of organic pollutants in water.

The invention discloses a pyrenyl Schiff base fluorescent derivative, a fluorescent probe, a preparation method of the pyrenyl Schiff base fluorescent derivative and application of the pyrenyl Schiff base fluorescent probe in biological imaging, and belongs to the technical field of fluorescent probes. The pyrenyl Schiff base fluorescent probe capable of specifically detecting the zinc ions is prepared through two-step chemical reaction of Suzuki coupling reaction and aldehyde amine condensation reaction, and the pyrenyl Schiff base fluorescent probe has good recoverability and low cytotoxicity, is high in practicability and low in cost, and can be applied to detection of the zinc ions. In addition, the sensor has excellent ion selectivity to zinc ions, extremely high sensitivity, good Stokes displacement and visual sensing performance, and detection of exogenous zinc ions and endogenous zinc ions in cells and tissues is realized through biological imaging. The problems of difficult synthesis process, slow response speed, high detection cost, non-ideal biological imaging effect and the like of the conventional fluorescent derivative are solved.

The invention discloses a perovskite precursor solution containing substituted aromatic ring group sulfonic acid, which comprises a perovskite material, an additive and an organic solvent, the additive is aromatic ring group sulfonic acid with a substituent group or a salt thereof, the aromatic ring is a benzene ring, a naphthalene ring or a pyrene ring, and the substituent group is one or more of H, halogen, C1-C4 alkenyl and C1-C4 alkyl. Polycyclic aromatic hydrocarbon (such as benzene, naphthalene and pyrene) is used as a framework, one sulfonic acid group instead of a sulfonyl group is introduced, and uncoordinated type defect passivation is realized through bonding with Pb < 2 + >; meanwhile, the electron push-pull characteristic of the substituent group is utilized, the Lewis acid-base amphoteric property is exerted, passivation of various types of defects is achieved, anchoring and passivation of multiple sites are achieved, the defects of the perovskite active layer can be remarkably reduced, non-radiative recombination can be reduced, and the performance and stability of the prepared perovskite solar cell in the large-scale preparation process are further improved.

The invention provides a biosensing probe based on a pyrene-doped metal organic framework composite material, and a preparation method and a reagent thereof. The pyrene-doped metal organic framework composite material PCA-UiO-66 is prepared by adopting a one-pot method, the target product can be prepared by directly introducing 1-pyrenecarboxylic acid in the synthesis process of the UiO-66, PCA in the prepared PCA-UiO-66 composite material has stability and flexibility in MOF, the PCA-UiO-66 composite material is suitable for application in the aspect of biosensing, and the application range is wide. The biosensing probe Apt (at) PCA-UiO-66 prepared on the basis has good flexibility, excellent selectivity and anti-interference capability, excellent reproducibility and stability, wide detection range and extremely low detection limit.

The invention provides a covalent organic framework material as well as a preparation method and application thereof, 1, 3, 6, 8-tetra (4-aminophenyl) pyrene is selected as a central construction unit, and a trap state is realized in a covalent organic framework (COFs) by regulating and controlling the symmetry of active sites (benzothiadiazole, BT). Compared with a centrosymmetric counterpart in the COFs, by breaking the symmetry of the center BT core, the trap state density in the COFs can be remarkably reduced, and the service life of the shallow trap state can be prolonged to 1160.02 picoseconds. Therefore, more photo-induced electrons can participate in the photocatalytic reaction, and the remarkable performance (greater than 99%) of photocatalytic reduction of uranium (VI) is finally realized. According to the invention, the key effect of symmetric breaking in inhibition of excited state decay of COFs is clarified for the first time, and a profound solution is provided for understanding how to improve the photocatalytic performance of COFs in environmental restoration.

The invention relates to the field of ultraviolet light absorbers, and discloses a research and development method of an ultraviolet light absorber with a novel structure. Comprising the following raw materials in parts by weight: 25 to 30 parts of pyrene-triazine hybrid, 10 to 20 parts of MOF loaded benzotriazole, 15 to 20 parts of silicon dioxide coated nano zinc oxide, 10 to 15 parts of carbon quantum dot modified titanium dioxide, 8 to 12 parts of PLGA microcapsules, 7 to 13 parts of chitosan-hyaluronic acid composite film, 12 to 18 parts of Eu < 3 + > coated MOF fluorescent material, 8 to 12 parts of gibberellin-nano selenium compound and 5 to 8 parts of ionic liquid PF6. The absorption wavelength range is widened by virtue of a unique structure of a pyrene-triazine hybrid, the stability and dispersity are improved by MOF-loaded benzotriazole through MOF pore channels, the conditions of agglomeration and poor stability of nano-zinc oxide are improved by coating nano-zinc oxide with silicon dioxide, and the photoresponse range of titanium dioxide is expanded by modifying titanium dioxide with carbon quantum dots.

The invention discloses a preparation method and application of a pyrenyl covalent organic framework material containing pyridine nitrogen. The material has good application in the aspect of activating potassium monopersulfate (PMS) to degrade organic pollutants. The preparation method of the pyrenyl covalent organic framework material containing pyridine nitrogen comprises the following steps: taking 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 2, 6-pyridinedicarboxaldehyde as synthesis precursors, and carrying out Schiff base reaction to obtain the pyrenyl covalent organic framework material containing pyridine nitrogen. By introducing a pyridine nitrogen structure, the PMS activation capacity is remarkably improved, the efficient catalytic degradation capacity on bisphenol A is shown, meanwhile, the material is stable in property, does not generate secondary pollution, can be recycled, and has important application value and application prospects in the aspect of organic pollutant degradation.

The invention discloses a covalent organic framework material based on a boric acid structure, a preparation method of the covalent organic framework material and application of the covalent organic framework material in dopamine detection, and relates to a covalent organic framework material and a preparation method and application of the covalent organic framework material. The technical problems that an existing dopamine recognition method is high in detection limit and harsh in recognition environment are solved. The periodic structure fragment of the covalent organic framework material based on the boric acid structure is shown in the specification. The 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine and 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetrabenzaldehyde are subjected to a reaction to obtain the 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine derivative. The covalent organic framework material based on the boric acid structure is used for detecting dopamine, has relatively high selectivity and anti-interference capability, and is not interfered by amino acid in the environment. And the covalent organic framework material based on the boric acid structure can be embedded in the hydrogel, so that the hydrogel is convenient to carry. The method can be applied to detection of dopamine in environment and biological systems.

The invention belongs to the technical field of chromatographic separation materials, and discloses a preparation method and application of a GM-8 nanosheet material. The preparation method of the material comprises the following steps: respectively dissolving Cu (NO3) 2.3 H2O and 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene in an organic solvent, mixing, transferring into a reaction bottle, adding trifluoroacetic acid and pyridine, and uniformly mixing and stirring to obtain a reaction mixture; and heating the reaction mixture to react for 7-9 hours to obtain a blue precipitate, cooling the blue precipitate to room temperature, and washing and drying the blue precipitate to obtain the ultra-stable microporous GM-8 nanosheet material. The nanosheet GM-8 is used as a gas chromatography stationary phase, high-efficiency separation and trace detection of xylene isomers can be realized, and the chromatographic column still keeps excellent separation capacity after being stored in an environment with air humidity of 65-90% for 31 months. The capillary gas chromatographic column can realize high-efficiency separation of disubstituted benzene isomers such as xylene, the separation degree of m-xylene / p-xylene is up to 18.2, and a new solution is provided for high-efficiency separation of isomers with similar properties.

The invention discloses a preparation method and application of a pyrenyl metal organic framework two-dimensional ultrathin nanosheet, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: respectively dispersing a 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene ligand and a metal salt in an organic solvent or a mixed solution of the organic solvent and deionized water, uniformly stirring, dropwise adding the obtained ligand solution into a metal salt solution in a stirring state, uniformly stirring, washing, and drying to obtain the 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene complex. And filling the obtained mixed solution into a stainless steel reaction kettle containing a polytetrafluoroethylene lining, carrying out solvent heat treatment, cooling, centrifuging, washing, and freeze-drying to obtain a series of pyrenyl MOF two-dimensional ultrathin nanosheets. The method does not need a regulator, the preparation process is mild and simple, and the method has high repeatability and universality. The thickness of the prepared ultrathin two-dimensional MOF nanosheet is less than 3nm, and the ultrathin two-dimensional MOF nanosheet has the characteristics of micron size and large specific surface area, and can be used as an excellent candidate of a photocatalyst for producing hydrogen by photocatalytic decomposition of water.

The invention belongs to the technical field of material chemistry, and provides a light response type oxidase-like simulant with a donor-receptor structure as well as a preparation method and application of the light response type oxidase-like simulant. The oxidase-like simulant is obtained through an ammonia-aldehyde condensation reaction of 1, 3, 6, 8-tetra (4-aminophenyl) pyrene or 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine and BDP (1, 3, 6, 8-tetra (4-aminophenyl) pyrene. The oxidase-like enzyme can form a sensor or a kit for detecting organophosphorus pesticides together with TMB, AChE and AChE substrates; qualitative determination can be realized through visual inspection of color change, and quantitative determination can also be realized through assistance of a colorimetric instrument. The light response type nano enzyme and AChE cascade reaction can realize visual rapid detection of various organophosphorus pesticides in traditional Chinese medicinal materials such as astragalus membranaceus and angelica sinensis, and has the advantages of being simple, rapid, high in sensitivity, good in practicability and the like.

This disclosure refers to a method for the synthesis of polymers with weight average molecular weights greater than 50,000 g / mol, chemically inert, with a minimum decomposition temperature of 425° C., and a main chain composed only of carbon-carbon bonds, which contain structures of the type of naphthalene, phenanthrene, anthracene, pyrene, carbazole or any other where two or more aromatic rings of six carbon atoms of the benzene-type are fused, which may or may not contain aromatic heterocycles. In addition, the polymers obtained from the present disclosure may or may not contain fluorine atoms in their structure. The synthesis described here is carried out by means of polycondensation between a polycyclic aromatic compound and a compound with a carbonyl group in its structure in a strong acid medium.

The invention relates to a nano composite material based on a porphyrin hydrogen bond organic framework as well as a preparation method and anti-tumor application of the nano composite material. The invention discloses a hydrogen bond organic framework with a smaller size, which is prepared from 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene and 5, 10, 15, 20-tetra (4-aminobenzene)-21H, 23H-porphyrin, and a hydrogen bond organic framework with a smaller size, a larger specific surface area and a larger specific surface area is constructed on the basis of the hydrogen bond organic framework. The novel nano composite material has good photo-thermal performance, photodynamic performance and anti-tumor activity, and can efficiently trigger ferroptosis of tumor cells.

The invention discloses a tetrapyridine pyrene-based metal organic cage as well as a preparation method and application thereof, and belongs to the technical field of supramolecular chemistry. The metal organic cage is prepared from a tetrapyridine pyrene ligand, a tetradentate sodium carboxylate ligand and a cis-platinum metal ligand, and the metal organic cage is endowed with photocatalytic performance by introducing a photosensitive group into the ligands, so that the metal organic cage can effectively degrade perfluorooctanoic acid through a photo-induced electron transfer mechanism, thereby realizing an adsorption-degradation integrated function. The metal organic cages can release effective reactive oxygen species under the irradiation of a 365 nm ultraviolet lamp and can degrade the perfluorooctanoic acid, the defluorination rate can reach 80%, the perfluorooctanoic acid is degraded into a short-chain compound, and a photodegradation system is artificially prepared.

The invention belongs to the technical field of photocatalysts, provides a structure, a preparation method and application of four novel organic polymer materials, and particularly relates to a preparation method and application of a perylene covalent triazine framework material. The preparation method mainly comprises the following steps: firstly, mixing monomers containing different functional groups and structures in different solvents, and synthesizing a polymer material through simple Sonogashira coupling reaction and Suzuki coupling reaction; secondly, performing Soxhlet extraction and purification on the four materials in a Soxhlet extractor to wash off impurities and unreacted monomers; according to the novel organic polymer material, triazine rings are introduced and form a more stable and prolonged D-A structure with pyrene and perylene functional group parts, intramolecular electron transfer of photon-generated carriers is promoted, compounding of the photon-generated carriers can be inhibited, and then the performance of the obtained material for photocatalytic water production of hydrogen peroxide is improved; meanwhile, the influence of introduction of different units on the performance of photocatalytic water production of hydrogen peroxide is compared.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

The invention belongs to the technical field of biological agents and bioremediation, and particularly relates to a PAHs degrading strain as well as a fungicide and application thereof. The invention provides a strain for degrading PAHs (polycyclic aromatic hydrocarbons), the strain is Brucella anthrapi M1, and the preservation number of the strain is CCTCC (China Center for Type Culture Collection) M 2024922. The strain M1 can grow and breed by taking benzo (a) pyrene (BaP), pyrene or phenol as the unique carbon source and energy, and can quickly degrade PAHs; the strain is cultured in an inorganic salt culture medium with BaP, pyrene and phenol initial concentration of 5 mg / L for 5 days, and the degradation efficiency reaches 81%, 37% and 28% respectively. The bacterial strain is prepared into a microbial inoculum through crosslinking of sodium alginate and calcium chloride, and the degradation efficiencies of the microbial inoculum to BaP, pyrene or phenol respectively reach 46%, 37% and 80%. After the bacterial strain is prepared into a bacterial agent, the BaP degradation efficiency of the bacterial agent can reach 80%. Therefore, the strain and the fungicide thereof have a good application prospect in the bioremediation of PAHs (especially BaP) polluted soil or water.

The invention belongs to the technical field of novel functional materials and biosensing detection, and provides a preparation method and application of a pyrenyl-based covalent organic framework immunosensor. Specifically, a pyrenyl covalent organic framework is adopted as an electrochemiluminescence material, and free rotation of 1, 3, 6, 8-tetra (4-formylphenyl) pyrene is effectively inhibited through connection of formylhydrazine, so that non-radiative transition is weakened, and the electrochemiluminescence signal intensity is enhanced. The nickel-iron-carbon nano tube loaded with the gold nano particles is used as a substrate material, on one hand, the three-dimensional interconnected carbon nano tube can improve the electron transfer efficiency, and the large-area gold nano particles can immobilize more antibodies, and on the other hand, the uniformly dispersed iron-nickel active center can promote the generation of more tripropylamine free radicals with strong oxidizing property, so that the anti-tumor effect is improved. The luminous efficiency of the pyrenyl covalent organic framework is further improved. The carbohydrate antigen 242 is detected according to different electrochemical luminescence signal intensities of to-be-detected substances with different concentrations.

The invention discloses a covalent organic framework material, a preparation method thereof and application of the covalent organic framework material in degrading new pollutants in a water body by activating PMS, the covalent organic framework material contains a pyrene group and a bipyridine linking group, has a flat molecular structure and a laminated nanosheet morphology, and has a regular pore structure; the catalyst has a good crystal structure, reliable mechanical strength and excellent thermal chemical stability and catalytic activity, and is an excellent catalyst; and the subsequent modification and metal atom loading sites exist, so that the possibility is provided for further improving the catalytic activity. The bottleneck problems of low crystallinity and poor stability in the traditional preparation process are solved through solvothermal reaction preparation, use of a mixed solvent system and introduction of a weakly acidic solvent, the preparation method is simple, and large-scale production can be realized. The activated PMS degrades new pollutants in the water body; under the condition that the reaction time is 45 minutes, the degradation rate of the BPA can reach 100%.

The invention discloses a preparation method of a pyrenyl covalent organic framework material and application of the pyrenyl covalent organic framework material in photocatalytic hydrogen production reaction, and belongs to the field of heterogeneous catalysis. The novel pyrenyl COFs photocatalyst is synthesized by regulating and controlling the quantity of triphenylamine and integrating triphenylamine monomers with different contents into a pyrenyl covalent organic framework (COF) skeleton. The preparation method is simple to operate, mild in reaction condition, short in reaction time and high in repeatability, the obtained pyrenyl COFs have good light capture capacity and photon-generated carrier separation characteristic, electron-hole recombination can be effectively reduced, the excited state service life is prolonged, the reaction efficiency of photocatalytic hydrogen production is improved, and potential application prospects are achieved.

The invention discloses a pyrenyl metal organic framework material Cr-TBPP-MOF suitable for low-temperature methane adsorption and storage as well as a preparation method and application of the pyrenyl metal organic framework material Cr-TBPP-MOF in low-temperature methane adsorption. The preparation method comprises the following steps: firstly, synthesizing an eight-connection pyrenyl ligand H8TBPP from 1, 3, 6, 8-tetrabromo pyrene serving as a raw material under a specific and appropriate condition, and then preparing the high-porosity metal organic framework material Cr-TBPP-MOF from the eight-connection pyrenyl ligand H8TBPP and a Cr3 metal cluster under a specific and appropriate condition. The synthesis and preparation method is easy to operate, low in cost and suitable for efficient low-temperature methane adsorption and storage.

The invention provides a solid additive and a preparation method thereof, positive electrode slurry, a positive plate and a lithium ion battery. The preparation method of the solid additive comprises the following steps: carrying out polymerization reaction on raw materials comprising an organic compound and a functional compound to obtain the solid additive, wherein the organic compound is a pyrene compound and / or an organic framework compound; the pyrene compound is a 1, 3, 6, 8-tetra (4 '-formylbenzene) pyrene ligand and / or 4, 4', 4 '', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetraphenylamine; the organic framework compound is a covalent organic framework material COFs and / or a metal organic framework material MOFs; the functional compound is a crown ether compound and / or a Bispidine compound. The solid additive obtained by the preparation method can selectively capture manganese ions, so that the manganese ions are prevented from being dissolved out from a positive electrode, and the cycle stability and the cycle life of the positive electrode are improved.

The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host being an anthracene derivative and a first dopant being a pyrene derivative and positioned between the first and second electrodes; and a first electron blocking layer including an electron blocking material of a heteroaryl-substituted amine derivative and positioned between the first electrode and the first emitting material layer, wherein at least one of hydrogen atoms in the anthracene derivative and the pyrene derivative is deuterated.

The invention discloses a method for detecting the content change of E-DOM and I-DOM released by algae under exposure of PAHs and derivatives thereof, and the method comprises the following steps: comparing the fluorescence characteristic difference of E-DOM and I-DOM of algae, and forming quantitative recognition by using four main fluorescence components; the method can be used for determining the content change of E-DOM and I-DOM released by algae under the exposure of PAHs including pyrene and 1-nitropyrene and derivatives thereof, further exploring the dynamic change of persistent organic pollutants on dissolved organic matters released by algae, and has important significance on eutrophication treatment and environmental protection.