110 results about "Zinc porphyrin" patented technology

The present invention relates to zinc porphyrin-based photosensitive dyes, specifically to zinc porphyrin-based photosensitive dyes with green transparency. The photosensitive dyes exhibit high push-pull ability in the zinc porphyrin-based structure, higher absorption and power conversion efficiency. The photosensitive dyes are used in the manufacture of dye-sensitive solar cells.

The invention discloses a method for recognizing quantitative chiral amino acid by using a reversible nano porphyrin fluorescence sensor, and belongs to the technical field of nano material preparation and chemical analysis detection. The reversible nano porphyrin fluorescence sensor for specifically recognizing quantitative proline, lysine and serine chirality adopts a CdTe quantum dot as a fluorescence probe, and self-assembled porphyrin prepared from a tetra-(4-pyridyl) zinc porphyrin tetrahydrofuran solution and cetyl trimethyl ammonium bromide (CTAB) as a fluorescence quencher, and with the specific combination of the florescence probe and the fluorescence quencher, an openable/closeable nano porphyrin fluorescence sensor can be prepared. The reversible (opening-closing-opening) nano porphyrin fluorescence sensor can be prepared under the action of the openable/closeable nano porphyrin fluorescence sensor with the chiral proline, lysine and serine. Compared with a conventional chromatographic method for recognizing amino acid chirality by separating, the method disclosed by the invention has multiple advantages.

A controllable preparation method for a switch nano porphyrin fluorescent sensor. The invention belongs to the field of preparation of nano-materials. In the method, the switch nano porphyrin fluorescent sensor, which has dual-composite nano effect, can be controllably prepared by means of the photosensitive effect of self-assembled nano-crystallization tetra(4-pyridyl)zinc porphyrin and CdTe quantum dots at a specific sample adding sequence and in a buffer solution system having proper pH value. The composite sensing interface, based on the nano porphyrin and the quantum dots, is higher in switch sensitivity and better in stability than a composite sensing interface formed from common porphyrin and quantum dots. The preparation method is carried out at normal temperature and under normal pressure all the time, is simple and quick, has good controllability and has wide application prospect.

The invention relates to a tetra-(4-pyridyl) zinc porphyrin self-assembly nanocrystallization method and belongs to the field of nano material preparation. The method comprises the following steps: 1, using the tetrahydrofuran solution of tetra-(4- pyridyl) zinc porphyrin as a reaction substrate; 2, choosing a cetyl trimethyl ammonium bromide water solution within an appropriate concentration range as a reactant; 3, directly mixing the two solutions in a normal temperature and normal pressure; 4, using a magnetic stirrer to stir until the solution is clarified and obtaining a tetra-(4-pyridyl) zinc porphyrin nanosphere or nanosphere and nanorod composite of different grain diameters and morphology characteristics. The synthesizing method of the invention has the advantages of being quick, simple and easy to operate, having short reaction time, high controllability, environment friendliness, good stability and good repeatability, and the like.

The invention discloses imidazole ionic liquid functionalized zinc porphyrin and an application thereof. The molecular structure of the imidazole ionic liquid functionalized zinc porphyrin is shown inthe specification, wherein the imidazole ionic liquid functionalized zinc porphyrin can be used for efficiently catalyzing the cycloaddition reaction of CO2 and epoxy compounds under the conditions of no solvent, no cocatalyst and mild conditions, wherein the catalytic performance is superior to most of catalysts reported at present.

The invention discloses a method for applying a water-soluble tetra sodium sulfonate phenyl porphyrin metal complex to microcontact printing. The method comprises the following specific steps of: 1) substrate carboxylation; 2) preparation of 5,10,15,20-tetra sodium sulfonate phenyl zinc porphyrin water solution; 3) microcontact printing; and 4) chemical plating. The method has the beneficial effects that 1. the obtained pattern is exquisite and fine and a new thought is provided for the microcontact printing industry; and 2. as a printing agent, the 5,10,15,20-tetra sodium sulfonate phenyl zinc porphyrin water solution has water solubility, can reduce use of organic solvents, has the advantages of environment-friendliness, low cost and stability and has great potential in industrial application.

A light energy conversion system having a multiplicity of artificial photosynthetic reaction centers and exhibiting a high light-harvesting capability and charge separation capability, constructed by the use of a zinc porphyrin dendrimer supramolecular complex formed by the use of a coordinate bond. Using a zinc porphyrin dendrimer as a spherical zinc porphyrin oligomer, a supramolecule with pyridylnaphthalenediimide was constructed. With respect to the zinc porphyrin dendrimer/pyridylnaphthalenediimide supramolecule, when photoexcitation of the zinc porphyrin was realized, a charge-separated state was generated by photoinduced electron transfer and the lifetime thereof was strikingly long, up to 830 microseconds.

The invention provides a novel water-insoluble porphyrin, namely 5-(4-phenoxyacetic acid)-10,15,20-triphenyl zinc porphyrin. The water-insoluble porphyrin is obtained by adopting 5-(4-hydroxyphenyl)-10,15,20-triphenyl zinc porphyrin as a raw material through coordination with zinc acetate, ethyl chloroacetate substitution reaction and acid neutralization reaction. Because the hydroxyl in the 5-(4-phenoxyacetic acid)-10,15,20-triphenyl zinc porphyrin is converted into soluble carboxyl, the 5-(4-phenoxyacetic acid)-10,15,20-triphenyl zinc porphyrin can be dissolved into water to a certain extent and particularly has favorable dissolubility under the alkaline condition. Compared with the hydroxyl, the carboxyl is better qualified for a task of electronic transmission, and the invention provides a good platform for further researching a photoelectronic functional material.

The invention belongs to the technical field of photocatalytic materials for degrading dye wastewater pollutants, and discloses a composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and a preparation method thereof. The method includes the synthesis steps that anatase type titanium dioxide and metallic zinc porphyrin are proportionally mixed in an organic solvent, heating reflux is conducted, and then the photocatalyst with titanium dioxide sensitized by metallic zinc porphyrin is obtained after filtering, washing and drying. The synthesis method is simple, and the prepared composite photocatalyst is stable in property, high in photocatalytic activity and capable of being used as an environment purifying material used for photocatalytic treatment of dye wastewater pollutants.

The invention discloses a synthesis and preparation method of a tripolyindenyl coumarin-corrole-porphyrin quaternary system star-shaped compound as shown in a formula (I) which is described in the specification. The preparation method comprises the following steps: carrying out two-step Suzuki coupling reaction by using 2, 7-dibromo-12-coumarin-based tripolyindenyl with a borate corrole derivativeand a borate zinc porphyrin derivative in sequence to obtain the tripolyindenyl coumarin-corrole-porphyrin quaternary system star-shaped compound shown in the formula (I). The star-shaped compound issimple in synthesis method, mild in reaction condition and relatively simple and convenient to separate and purify. Different groups in the synthesized star-shaped molecules can be subjected to intermolecular high-efficiency energy transfer after being excited by light, and can be applied to the fields of optical molecular absorption antennas, organic solar cells, artificial simulated biologicalphotosynthesis and the like.

The invention relates to a controllable preparation method of a porphyrin/SiO2 co-assembly nano composite material for photodynamic therapy. The method comprises the following steps: (1) preparing a mixed solution of tetrapyridyl zinc porphyrin and hydrochloric acid, an MTAB aqueous solution and a methanol tetraethyl orthosilicate solution; (2), adding the mixed solution of the tetrapyridyl zinc porphyrin and HCl into an MTAB aqueous solution containing a NaOH solution under a stirring condition, wherein the pH of the mixed solution is 4.0 to 5.3; (3) dropwise adding the methanol tetraethyl orthosilicate solution into the solution in the step (2) every 10 to 20 minutes, and adding all methanol tetraethyl orthosilicate solution within 3 to 4 hours; and (4) stirring a reaction solution obtained in the step (3) for 40 to 50 h at a room temperature, centrifugally separating, and obtaining precipitates, i.e. the porphyrin/SiO2 co-assembly nano composite material. After the targeted modification by folic acid, the prepared composite material has an effect for accumulating rapidly-proliferated cells in priority, has excellent fluorescent imaging positioning capacity, has high photo therapy efficiency and the like.

The invention provides flexible multi-arm porphyrin with pyridine groups, and belongs to the technical field of chemical synthesis. M-hydroxy-benzaldehyd and pyrrole are taken as raw materials and subjected to three reactions of condensation, coordination and substitution to be successfully synthesized into 5,10,15,20-tetra{3-(4-methyleneoxy)pyridyl}phenyl zinc porphyrin. The compound has a plurality of flexible pyridine groups, and has good coordination capacity, so a series of metal coordination compounds can be derived from the compound serving as a raw material. The synthesis process is simple, the process route is short, and the operation is convenient; and the reaction conditions are mild, the cost is low and the yield is high.

The invention relates to a method for preparing one-class ferrocene modified porphyrin and metal porphyrin liquid crystal. The method comprises the following steps: based on ferrocene methyl formate, preparing 1'-long-chain alkyl ferrocene formic acid through fourier acetoxylation acylation, Clemmensen reduction reaction and saponification, subsequently reacting the 1'-long-chain alkyl ferrocene formic acid with phosphorus trichloride to obtain 1'-long-chain alkyl ferrocene formyl chloride, and subsequently reacting the 1'-long-chain alkyl ferrocene formyl chloride with p-hydroxy benzaldehyde to obtain long-chain alkyl ferrocene substituted benzaldehyde; reacting the long-chain alkyl ferrocene substituted benzaldehyde with pyrrole to synthesize meso-tert long-chain alkyl ferrocene substituted phenyl porphyrin, and subsequently coordinating the porphyrin center with metal zinc ion to prepare metal zinc porphyrin. Due to introduction of the long-chain alkyl, the compound is both rigid and soft, and is wide in application prospect in the fields of organic photoelectric functional materials, organic semiconductor materials and liquid crystal materials.

The invention discloses a method for quantitatively determining flavonoid compounds and belongs to the technical field of nanometer material preparation and chemical analysis and detection. Accordingto the method disclosed by the invention, a self-assembled nanocrystallized quadri-(4-pyridyl) zinc porphyrin photosensitive effect and a ZnCdSe quantum dot are prepared in a buffer solution system toobtain a reversible nanometer-porphyrin fluorescent sensor with a double-composite nanometer effect; then, a strong action force between the flavonoid compounds and the nanometer porphyrin is utilized to pull out specific changes of a reversible composite sensing interface between the nanometer porphyrin and the quantum dot to different degrees so as to realize quantitative detection of the flavonoid compounds. The preparation method disclosed by the invention is simple and controllable, and the flavonoid compound detection method is high in sensitivity, good in selectivity and high in specificity. The method not only can play an important role in flavonoid compound detection but also expectedly has an important application value in the fields of biochemistry and the like.

The invention discloses a method for detecting pesticide carbaryl based on nanogold etching, which comprises the following steps: adding a to-be-detected solution I containing carbaryl and tetra-(4-pyridyl) zinc porphyrin nanorods into a mixed solution II containing biconical nanogold and hydrogen peroxide, uniformly mixing the solution II and enabling the solution II to react fully to obtain a solution system III; and detecting the carbaryl according to the color change of the solution system III obtained by the reaction before and after introduction of the carbaryl or the peak appearance position change of a corresponding biconical nanogold LSPR peak. The method has the advantages of being easy to operate, high in sensitivity, rich in color change and the like, can achieve rapid, quantitative and visual recognition of carbaryl in food systems with complex components such as fruits, vegetables and traditional Chinese medicinal materials, and is suitable for application and popularization.

The invention provides a processing technology for an unsmoked nitrite-free cured meat product. The technology mainly comprises the steps of formulation of raw material standards, optimization of smoke flavor and color enhancing liquid, research on a non-smoking process for traditional Chinese bacon, screening and determination of a substitute for a nitrite, extraction of a plant-origin nitrite and processing of a meat product. The processing technology is characterized in that: (1) formulation of the raw material standards is a step of determining influence of each factor through orthogonal tests and eventually formulating raw material standards for various salted and cured products; (2) optimization of smoke flavor and color enhancing liquid is a step of selecting guaiacol, eugenol, high-salt dilute soy, glutamic acid, glucose, ascorbic acid and the like as a substrate for producing smoke flavor to obtain an optimal formula for the smoke flavor and color enhancing liquid; (3) in screening and determination of the substitute for the nitrite, zinc porphyrin is used as the substitute for the nitrite for processing of the meat product; and (4) extraction of the plant-origin nitrite is a step of selecting and using vegetable with high nitrate content, extracting and refining vegetable juice with high nitrate content and adding the refined vegetable juice into the cured meat product as a color former for processing of the meat product.

The present invention is directed to the treatment of hepatitis C infection with a metalloporphyrin. In particular, the present invention is based on the discovery that the NS5A protein plays a key role in HCV RNA replication by participating in polyprotein cleavage, interferon response and cellular signaling pathways. It has been found that metalloporphyrins, such as zinc porphyrins, induce post-translational down-regulation of HCV NS5A protein in an ubquitin-proteasome degradation pathway. That is, metalloporphyrins can be used to activate the ubiquitin-proteasomal pathway of NS5A protein catabolism. As a result, metalloporphyrins can be used to significantly suppress HCV viral replication in HCV infected cells.

The invention belongs to the technical field of solar cells, and particularly relates to a zinc porphyrin supramolecular dye sensitizer, a preparation method and application thereof. Zinc porphyrin chromophores, which are used as antenna molecules, and 4-pyridyl benzoic acid anchoring molecules are subjected to zinc porphyrin supermolecule self-assembly on the surface of photo-anode TiO2 to obtainthe dye sensitizer, the structure of the dye sensitizer is shown in a formula A shown in the description, and then, the dye sensitizer is applied to a dye-sensitized solar cell. According to the invention, the zinc porphyrin chromophores, which are used as antenna molecules, and the 4-pyridyl benzoic acid anchoring molecules are subjected to zinc porphyrin supramolecular self-assembly to construct the zinc porphyrin supramolecular dye sensitizer, so that complex synthesis steps of common dye sensitizers are effectively reduced, and the photon trapping performance of a device is improved.

The invention discloses a preparation method of an electrochemiluminescent material based on zinc porphyrin. The electrochemiluminescent material is synthesized through chemical modification by using beta-cyclodextrin and m-tetraphenylsulfonic zinc porphyrin. The preparation method comprises the steps: first, using sodium hydride to restore 7-(2,6- methoxyl) beta-cyclodextrin, adding 3,5-dichloromethyl pyridine to conduct a substitution reaction to form beta-cyclodextrin dimer, adding the m-tetraphenylsulfonic zinc porphyrin, and using a manner of axial coordination to form the electrochemiluminescent material. The electrochemiluminescent material prepared by the invention is high in biocompatibility, stable in ECL signal, high in water solubility, close to an actual detection system, and capable of being applied to efficient and sensitive analysis and detection.

The invention discloses a preparation method and an application of an organic nanostructure for improving molecular assembly. Porphyrin ice cubes are subjected to an acid-base neutralization reactionand slowly self-assembled under the assisting action of a surfactant, and organic nano-porphyrin (zinc porphyrin) powder with organic nanostructure, controllable morphology and good crystal form is obtained. A self-assembly process of organic molecules is effectively improved with the ice-dissolving slow release method, and the method has an important function in the aspects of reducing structuresize and perfecting crystal form. The method is simple and easy and provides experimental foundation for controllable assembly of the organic material. The application of the obtained organic nanostructure in photocatalytic degradation of organic dyestuff is researched, and a result shows that the structure has efficient photocatalytic activity. The wide application of the method to pollution abatement and energy depletion becomes possible.

The invention discloses a preparation method of Meso-tetra(3,4-dihydroxy phenyl) zinc porphyrin and belongs to the technical field of chemical synthesis and detection. The preparation method of Meso-tetra(3,4-dihydroxy phenyl) zinc porphyrin adopts raw materials in proportion as follows: 1.5 g of 3,4-dihydroxy benzaldehyde, 1.3 mL of pyrrole, 80 mL of nitrobenzene, 7.5 mL of isobutyric acid, 0.40 g of zinc acetate, 35 mL of tetrahydrofuran and 5-10 mL of methanol. The preparation method is simple, and the yield of Meso-tetra(3,4-dihydroxy phenyl) zinc porphyrin is high.

The invention relates to a preparation method of a NiO photocathode based on self-assembly of zinc porphyrin and cobalt dimethylglyoximate. The preparation method aims at solving the problems that existing photocathode preparation methods are complex, photocathodes are low in water decomposition efficiency, and the hydrogen production speed is low. The preparation method comprises the steps of 1, preparing a precursor solution of a NiO compact layer; 2, preparing the NiO compact layer; 3, preparing slurry; 4, preparing a NiO blank piece; 5, preparing a NiO photocathode sensitized by ZnTHPP; 6, preparing a NiO photocathode sensitized by ZnTHPP-bpy; 7, preparing a NiO photocathode sensitized by self-assembly of ZnTHPP-bpy-Codmg; 8, preparing a NiO photocathode sensitized by ZnTPPC; 9, preparing a NiO photocathode sensitized by ZnTPPC-bpy; and 10, conducting soaking and cleaning. By means of the preparation method, the NiO photocathode based on self-assembly of the zinc porphyrin and the cobalt dimethylglyoximate can be obtained.