47results about How to "Good photoelectric activity" patented technology

The invention discloses a fluorine pyridine fluorescent material and a preparation method thereof. The invention is characterized in that the fluorescent material is a fluorine pyridine organic compound with a molecular formula of C23H16N2, a monocline crystal system, a P21 / c space group, and cell parameters: a=11.235Angstrom, b=24.361Angstrom, c=13.318Angstrom, alpha=gamma=90 degrees, and beta=113.13 degrees. The fluorescent material is prepared by a synthetic reaction of 2, 7-dibromofluorene, 4-pyridine boric acid, tetrakis(triphenylphosphine)palladium and sodium carbonate according to a certain ratio. The fluorine pyridine fluorescent material has a definite space structure and an accurate molecular formula, simple synthesis procedures, and high yield (up to 70-80%); and through the introduction of pyridyl groups at 2 and 7 sites, the electron cloud density of the material is increased, the stability and solubility property of the material are improved, the luminescence performance of the material is enhanced, and the luminous efficiency of the material is improved.

The invention relates to a method for preparing a composite heterostructure of zinc oxide nano rods and a silver micron plate. The method includes: utilizing dextran sulphate sodium as regulating agent to prepare a perforated silver micron plate in a reaction system of silver nitrate and an ascorbic acid solution of water and methanamide; depositing zinc oxide seed crystals on the silver micron plate, coating the silver micron plate with the deposition of the zinc oxide seed crystals on an electric-conducting glass sheet in a rotating manner, cleaning, drying, placing the electric-conducting glass sheet in an ethanol solution of hexamethylene tetramine and zinc nitrate to grow a zinc oxide nano rod array on the silver micron plate, fully cleaning with water, and naturally drying to obtain the finished product. The product prepared by the method is a high-level composite heterostructure with the zinc oxide nano rod array growing on the perforated silver micron plate, wherein the diameter of the silver micron plate is about 4 microns, and the size and the structure of the zinc oxide nano rod array are adjustable and controller. The method for preparing the composite heterostructure of the zinc oxide nano rods and the silver micron plate is structurally controllable, good in repeatability and stable in product property, and has excellent photocatalytic performance.

The invention discloses a cobalt complex with electrocatalytic activity on formaldehyde and a preparation method thereof. The cobalt complex is an electrocatalytic material of an accurate spatial structure, a chemical formula of the cobalt complex is CoC8H12N6O12, a structural unit is [Co(C4H2N3O4)2(H2O)4], a crystal system is a triclinic crystal system, a space group is P-1, and crystal cell parameters are described in the specification, wherein alpha is 97.141 degrees, beta is 108.592 degrees, gamma is 115.555 degrees, and a cobalt ion is a hexa-coordinate octahedron geometrical configuration. The preparation method of the cobalt complex with the electrocatalytic activity on the formaldehyde comprises the step that chemical reaction is carried out on a 5-nitro potassium orotate monohydrate and the cobalt ion with electrocatalytic activity, so that the cobalt complex is obtained. The preparation method is simple in operation, low in cost and applicable to large-scale production. The obtained cobalt complex has good electrocatalytic activity and has potential application prospects as an electrocatalytic material.

The invention discloses a bipyridine bisthiophene blue fluorescent material. The fluorescent material is a bisthiophene organic compound double-sidedly coupled with pyridine, and its name is 5,5'-bis(pyridine-3-yl)-2 ,2′‑Bithiophene, the molecular formula is C 18 h 12 N 2 S 2 , the crystal system is monoclinic, the space group is P2(1) / n, the unit cell parameters α=γ=90°, β=103.20°. The blue fluorescent material has a clear spatial structure and accurate molecular formula, the synthesis steps are simple, and the reaction conditions are mild. After introducing pyridine groups at the 5-position on both sides of bithiophene, the degree of electronic delocalization is increased, and the blue fluorescent material is enhanced. The luminous performance of the material improves the stability and solubility of the material, and it has potential application prospects as a fluorescent material.

The invention discloses a light emitting material which is a platinum alkynyl containing compound, wherein the molecular formula is C33H24N6Pt, and the molecular weight is 699. The compound is a greenlight or green-yellow light emitting material which has an exact spatial structure and an accurate molecular formula; the molecule, containing alkynyl, conjugate large pi bond, Pt(II) ions with highoptical activity, etc., promotes electron transition and energy transfer, and thus, the compound disclosed by the invention has high photoelectric activity. The invention also discloses a preparationmethod of the light emitting material. The preparation method comprises the following steps: synthesizing an intermediate 1g from 2-(2-pyridine)imidazole and dichloromethane; synthesizing an intermediate 2g from the 1g and dimethylsulfoxide platinum chloride; finally, synthesizing the material from the 2g and phenylacetylene. The preparation method disclosed by the invention is easy to operate andhas high reaction selectivity. The invention also provides a method of emitting green light or green-yellow light of the light emitting material.

The invention relates to a preparation method and application of a photoelectrochemical cardiac troponin I sensor based on a multi-level micron cubic zinc stannate composite material, belonging to the field of photoelectrochemical sensors. Synthesis of hierarchically structured Zn using polypyrrole / nitrogen-deficient graphitic carbon nitride as a template 2 SnO 4 Cubic, Zn sensitized with nitrogen and sulfur doped graphene quantum dots N,S‑GQDs 2 SnO 4 , enhance its visible light absorption, and then grow CdS nanoparticles in situ to obtain a multi-level micron cubic zinc stannate composite material Zn with significantly improved photoelectric activity. 2 SnO 4 / N,S‑GQDs / CdS, through a layer-by-layer self-assembly approach, assembled cardiac troponin I antibody, bovine serum albumin, and cardiac troponin I antigen onto Zn 2 SnO 4 / N,S‑GQDs / CdS composites, utilizing Zn 2 SnO 4 The excellent photoelectric activity of / N,S‑GQDs / CdS and the specific binding between the antigen and antibody of cardiac troponin I enable the ultrasensitive detection of cardiac troponin I, which is of great significance for the analysis and detection of cardiac troponin I .

The invention discloses a preparation method of a metal ion doped titanium dioxide film. The preparation method comprises the following steps of: 1) performing metal ion doping of a titanium dioxide film by a hydrothermal method; and 2) performing annealing treatment on the sample subjected to hydrothermal treatment in an air condition to obtain the metal ion doped titanium dioxide film. The method has the characteristics of easiness in operation, low cost, uniform and controllable film thickness, simple and effective doping way and the like.

The invention discloses a method for constructing a photoelectrochemical sensor based on perovskite and black zirconium dioxide to detect 5-hydroxymethylcytosine deoxyribonucleotide (5hmC). The photoelectrochemical sensor includes an electrode, and the electrode is sequentially decorated with perovskite, mercaptopropionic acid, 5hmC and black ZrO 2 . First, a perovskite-based photoelectrochemical biosensor was constructed, using perovskite Bi 4 TaO 8 Good photoelectric activity and stability of Cl, M.HhaI methyltransferase catalyzes the specific reaction of hydroxymethyl groups with sulfhydryl groups on 5hmC, and black ZrO 2 Specific recognition of phosphate groups via black ZrO 2 with Bi 4 TaO 8 Cl forms a heterojunction to promote the transfer of photogenerated electrons to enhance the photoelectric signal, achieving high sensitivity and high specificity detection of 5hmC. The detection method of the invention is simple, easy to operate and low in cost, not only expands the application range of the two nanometer materials, but also realizes the detection of 5hmC.

The invention discloses a perylene diimide derivative and an electrical impedance type differential detection pyridine derivative sensor based on the same, a preparation method and an application thereof, and belongs to the technical field of organic semiconductor materials. The electrical impedance sensor of the present invention includes interdigital electrodes and organic active layer materials, the organic active layer materials are perylene diimide derivatives PBI-1N and PBI-2N, which are loaded on the interdigital electrodes by solution spin coating technology, And its thickness is 50-100nm. The pyridine sensor of the present invention is convenient to prepare, easy to operate, and has obvious distinguishing and detecting effects on pyridine and its derivatives, and the minimum detection limit of pyridine sensing intensity can reach ppb level; the sensor has strong resistance to interferences such as organic solvents, water and air. good resistance. In addition, the sensor of pyridine and its derivatives of the present invention has high stability and fast response time.

A polyarylether polymer containing a photoelectric functional group, a preparation method and an application thereof belong to the technical field of polymer materials. From the perspective of molecular design, the present invention introduces carbazole, triphenylamine, etc., which contain conjugated photoelectric active groups, into polymer side chains, and modifies the positions of the corresponding groups to continuously improve the performance of the material. Polyarylether polymers containing photoelectric functional groups were prepared by homopolymerization. At the same time, due to the use of nucleophilic substitution polycondensation method during polymerization, not only higher molecular weight polymers can be obtained, but also the degree of polymerization can be controlled. The 5% thermal weight loss of polyarylether polymers containing photoelectric functional groups provided by the invention is above 300°C, and can be dissolved in tetrahydrofuran, dichloromethane, chloroform, N, N'-dimethylformamide, Organic solvents such as N, N'-dimethylformamide, N-methylpyrrolidone, etc., can exhibit the photoelectric properties of corresponding photoelectrically active groups.

The invention relates to a pyrene organic material, a preparing method and an application of the pyrene organic material. The material which is built with the preparing method and is of a dumbbell-similar structure serves as an organic semiconductor to be applied to an organic electronic device. The general molecular formula of the material is shown in the specification. The material has the advantages that raw materials are low in price, and the synthesis method is simple and convenient; the dumbbell-shaped structure is adopted; high thermal stability and glass transition temperature are achieved; the material has good flexibility and high solubility; good photoelectric activity is achieved. The pyrene-based organic dumbbell-shaped material can be applied to the organic electronic fields such as organic luminescence display, organic optical storing, organic field effect transistors and organic lasers of thin-film devices. An electroluminescence device prepared from the material obtains the satisfactory results in the luminance aspect, the luminous efficiency aspect, the voltage-proof stability aspect and the like.