64results about How to "The preparation method is simple and mature" patented technology

The invention relates to the technical field of resin composition preparation and particularly relates to a 3D printing polymer material with special beautifying effects and a preparing method thereof. The polymer material comprises following raw materials by weight: 60-90 parts of matrix resin, 4.0-10 parts of a compatilizer, 0-30 parts of an inorganic filler, 0.3-2.0 parts of white oil, 0.4-0.6 part of an antioxidant, 0.5-1.0 part of a processing auxiliary agent and 1.0-5 parts of a toner. The polymer material is good in dimension stability, good in bridging effect and excellent in draping performance. The appearance of the polymer material is strong in metallic tactile sensation and pearl effects. The polymer material has one or a plurality of effects selected from heat discoloration, photochromic effects, effects of color changing when sensing water, and the like, and is of great significance for promoting material diversification and functionalization of 3D printing. The preparing method is simple, improves shearing and dispersion for the inorganic filler and the toner to the utmost, and improves properties of the polymer material.

The invention discloses a method for preparing a heterogeneous-phase Fenton catalyst and an application thereof, which belong to the fields of waste comprehensive utilization and water treatment. The method comprises the following steps: cleaning waste iron filings and biogas residue, drying the materials, crushing the materials, doping and dipping the materials, activating the materials at high temperature, pickling a sample and screening the sample to obtain the heterogeneous-phase Fenton catalyst. The method of the catalyst has the advantages of simple and easy operation, and saved preparation cost, effectively solves the resource utilization problem of waste iron filings and biogas residue, which belongs to the preparation technology of the sustainable development catalyst. The catalyst is used for processing difficultly-degraded waste water while being used for catalysis of Fenton, the pH value is not required to be adjusted, the pollutant removal effect is good, secondary pollution of iron filings and metal ions cannot be generated, the catalyst activity is not obviously changed through continuous operation with more than 600 hours, the catalyst has stable catalysis performance and good application performance, and is suitable for industrial popularization and application.

The invention discloses a treatment guide plate for root canal treatment. The treatment guide plate comprises a closing plate, and the closing plate comprises a matching surface matched with a tooth crown shape of a part of teeth or all teeth of an affected tooth or an affected tooth and an adjacent single tooth. Guide holes corresponding to corresponding root canals are formed in the closing plate, one end of each guide hole is located in the matching surface, the position design of the guide holes depends on the three-dimensional stress finite element analysis of the teeth, and a mechanical strut region of the teeth is avoided; when a drill pin penetrates through the corresponding guide hole to drill a marrow hole of the affected tooth, the mechanical strut structure of the affected tooth cannot be damaged by the drill pin, and the anti-stress structure of the tooth is protected; the teeth are prevented from being cracked when biting hard objects after operations. The invention further provides a preparation method. The preparation method of the treatment guide plate for root canal treatment is simple, mature and easy to popularize, and the prepared treatment guide plate effectively avoids damage to the mechanical strut structure of the affected tooth, so that the teeth can be prevented from being cracked when biting the hard objects after the operations.

The invention discloses a chemiluminiscence immuno biosensor detection device and a detection analysis method. The device comprises a sound energy transmission and chemiluminiscence immunoreaction detection device part and a control detection part, wherein the sound energy transmission and chemiluminiscence immunoreaction detection device part comprises an ultrasonic transducer, an ultrasonic coupling colloid, an acoustic focusing lens array integrated glass substrate, a replaceable chemiluminiscence immuno biosensing substrate, condensing transparent glass, a diaphragm, an optical lens and an optical signal detection circuit; the control detection part comprises an ultrasonic sensor, a proportion integration differentiation (PID) ultrasonic energy mode control module, a weak optical signal processing module, a data analysis and feedback control module, an energy control mode and chemiluminiscence immunoreaction system database. The method comprises the following steps: regulating a radiation energy field of the ultrasonic transducer; performing micro-flow injection analysis, and intelligently measuring and controlling ultrasonic transmitting energy. According to the device and method, the reaction efficiency is improved, and the detection sensitivity, accuracy, repeatability and stability are expanded.

The present invention provides a polymer containing thienothiophene-cyclopentadithiophene, a preparation method and an application thereof. The polymer is a polymer P having the following general formula, wherein R1 and R2 are the same or different H, C1-C12 alkyl or C1-C12 alkoxy, R3 and R4 are the same or different H or C1-C12 alkyl, R5 is C1-C12 alkyl or C1-C12 alkoxy, R6 is H or F, and n is a natural number of 10-70. According to the present invention, the polymer contains the new cyclopentadithiophene and thienothiophene unit, has the new conjugate plane structure, has characteristics of excellent sunlight matching property, excellent carrier mobility property and simple and controllable preparation method, and has good application prospects in the fields of polymer solar cells, organic electroluminescent devices and other optoelectronic materials. The polymer P is as the follow.

The invention discloses a detection device for an electrochemical immune biosensor and a detection and analysis method. The device comprises a sound energy transmission and electrochemical immune reaction detection device part and a control detection part. The electrochemical immune reaction detection device part comprises an ultrasonic transducer, an ultrasonic coupling colloid, a sound focusing lens array integrated glass base plate, a replaceable electrochemical immune bio-sensitive membrane substrate, a macromolecular gold membrane electrode base plate and a multi-channel weak electric signal detection circuit; the control detection part comprises an ultrasonic sensor, a PID (Proportion Integration Differentiation) ultrasonic energy mode control module, a weak electric signal processing module, a data analysis and feedback control module and an energy control mode and immune electrochemical reaction system database. The method comprises the following steps: adjusting a radiation energy field of the ultrasonic transducer; carrying out a micro-flow injection analysis; and carrying out intelligent measure and control on ultrasonic emission energy. According to the detection device for the electrochemical immune biosensor and the detection and analysis method, predominant detection low limit, sensitivity, accuracy, repeatability and stability are represented and a preparation method is developed and simple.

The invention provides a benzodithiophene-benzodi(benzothiadiazole) containing copolymer, preparation and application thereof. The benzodithiophene-benzodi(benzothiadiazole) containing copolymer is a compound P with a general formula shown as the specification, wherein R1 and R2 are alkyl of C1-C20, R3 and R4 are alkyl of C1-C20, alkoxy of C6-C16 or a thiophene derivative group, which has an alkyl side chain of C16, and n is an integer ranging from 1 to 100. The benzodithiophene-benzodi(benzothiadiazole) containing copolymer contains a new benzodi(benzothiadiazole) conjugated unit, the absorption spectrum of the copolymer undergoes red shift and has a high matching degree with a solar spectrum. Meanwhile, with a planar conjugated structure, the copolymer provided by the invention has the advantages of high charge carrier migration rate and high energy conversion efficiency, simple and controllable preparation method, and has good application prospects in polymer solar cells, organic light-emitting devices and other photoelectric material fields.

The present invention provides a polymer containing thienothiophene, benzothiadiazole and cyclopentadithiophene, a preparation method and an application thereof. The polymer is a polymer P having the following general formula, wherein R1 and R2 are the same or different H or C1-C12 alkyl, and n is a natural number of 5-60. According to the present invention, the three units such as thienothiophene, benzothiadiazole and cyclopentadithiophene in the polymer are combined to form the repeated unit having the acceptor-donor-acceptor-donor (A-D-A-D) form so as to enhance the charge transporting in the polymer molecule, reduce the band gap of the polymer, and expand the light absorption range of the polymer material, such that the polymer has characteristics of excellent sunlight matching property, excellent carrier mobility property and simple and controllable preparation method, and has good application prospects in the fields of polymer solar cells, organic electroluminescent devices and other optoelectronic materials. The polymer P is as the follow.

The invention provides an organic semiconductor material containing carbazole, a preparation method thereof, and an organic electroluminescent device. The organic semiconductor material containing carbazole is represented in the description as a compound P, wherein in the structure formula, the R represents an H atom or a C1-C4 alkyl group. The compound P is prepared through a Suzuki coupling reaction. The organic semiconductor material containing carbazole contains 1,2-diphenyl-1H-phenanthro[9,10-d]imidazole groups and carbazole groups, these groups all have a very good hole transport property and high thermostability, and thus the service life of luminescent device is prolonged.

The invention discloses a flame-retarding toughened biodegradable polylactic acid material and a preparation method thereof. The preparation method includes melt blending of polylactic acid, unsaturated polyester, an initiator, a flame retardant, and a flame retarding synergist. The material reaches V-0 level in vertical combustion UL-94, is 27-34% in limit oxygen index, is 104-248% in break elongation, is 30-41 MPa in yield strength, and is 10-35 kJ / m<2> in notch impact strength. The polylactic acid material is improved in toughness through a grafting reaction to a crosslinking structure, formed by in-situ dynamic vulcanization, with the polylactic acid base material, wherein the network structure formed by the dynamic vulcanization of carbon-carbon double bonds is very stable and is notliable to be damaged by the flame retardant, so that a problem of the damage on the toughening effect due to addition of the flame retardant is solved.

The invention discloses a preparation method of a beta-FeOOH / g-C3N4 heterojunction photocatalytic material. The preparation method of the FeOOH / g-C3N4 heterojunction photocatalytic material comprisesthe following steps of: placing melamine into a box-type furnace for multiple repeated thermal polymerization reactions to obtain block-shaped g-C3N4; dispersing the block-shaped g-C3N4 in 5-20 ml ofethylene glycol, and performing ultrasonic treatment for 10-40 minutes to finally obtain ultrasonic-assisted liquid-phase stripped GCNS suspension; adding FeCl3 solution into the GCNS suspension, mixing, fully and uniformly stirring, carrying out a solvent thermal reaction, and finally performing centrifugal washing and drying to obtain a composite material of a one-dimensional beta-FeOOH nanorodand a two-dimensional g-C3N4 sheet; placing the dried composite material into a muffle furnace for heat treatment to finally obtain the beta-FeOOH / g-C3N4 heterojunction material. The preparation method is simple, mature, and low in cost, and the prepared material is good in material chemical stability, strong in pollutant degradation capability and high in catalytic efficiency.

The invention discloses a copper-based low-temperature reversible thermochromic material which is a Cu(OH)2 / HKUST-1 composite material and is low in color changing temperature, short in color changing time and short in time recovering time. A preparation method of the copper-based low-temperature reversible thermochromic material comprises the following steps: cleaning and drying a high-purity Cu sheet and a high-purity Ti sheet; preparing a Cu(OH)2 nanowire array by taking the cleaned and dried high-purity Cu sheet as an anode, taking the cleaned and dried high-purity Ti sheet as a cathode and using an anodic oxidation method; soaking the Cu(OH)2 nanowire array into an absolute ethyl alcohol solution of 1,3,5-benzenetricarboxylic acid, cleaning the Cu(OH)2 nanowire array by using deionized water, and drying the Cu(OH)2 nanowire array to obtain the low-temperature reversible thermochromic material of Cu(OH)2 / HKUST-1. The preparation method of the copper-based low-temperature reversible thermochromic material, disclosed by the invention, is simple and mature, low in cost, high in color changing contrast, low in color changing temperature, short in color changing time and color recovering time and high in reversibility.

The invention relates to the technical field of high polymer materials, in particular to a polyamide composition with improved light-heat aging performance. The polyamide composition includes the following raw materials by mass: 40-85% of polyamide resin, 1-8% of UV masterbatches, 0.5-5% of a composition containing a silicon functional group and silicon dioxide, 0.2-1% of an antioxidant, 10-50% of an inorganic filler, and 0-5% of a pigment. The polyamide composition with improved light-heat aging performance provided by the invention can be applied in products with rich colors and demanding requirements for light-heat aging resistance. The prepared polyamide composition has stable performance and excellent long-term light-heat aging resistance, and the preparation method is simple and mature, thus being conducive to general popularization and application.

The invention discloses a low-friction modified polypropylene / glass fiber reinforced plastic composite electrical tube. A manufacturing method of the low-friction modified polypropylene / glass fiber reinforced plastic composite electrical tube comprises the following steps of performing melt extrusion and granulation on silicones of which the weight-average molecular weight is 800,000 to 1200,000 and modified polypropylene to obtain modified master batch; mixing the modified master batch and the modified polypropylene under the condition that the silicones in an inner layer of the electrical tube are 2-5wt%; drying the mixture and the modified polypropylene and performing melt compound extrusion on the mixture and the modified polypropylene to obtain a double-layered tube; and compounding a composite glass fiber reinforcement layer on the outer wall of the double-layered tube so as to obtain the composite electrical tube which sequentially comprises a modified polypropylene low-friction layer 1 containing the silicones, a modified polypropylene layer 2 and a glass fiber reinforcement layer 3 from inside to outside. The frictional coefficient of the inner layer of the composite electrical tube is 0.08-0.23. The composite electrical tube has advantages of a glass fiber reinforcement plastic cable conduit and a modified polypropylene plastic cable conduit; by the silicones in the inner layer of the composite electrical tube, the surface friction coefficient of the inner wall of the composite electrical tube is greatly reduced; and the composite electrical tube is a product with excellent overall performance in the field of plastic composite conduits for power cables.

The invention provides a fluorene-benzodi(benzothiadiazole) containing copolymer, a preparation method and application thereof. The fluorene-benzodi(benzothiadiazole) containing copolymer is a compound P with a general formula shown as the specification, wherein R1 and R2 are alkyl of C1-C26, R3 and R4 are H or alkyl of C8-C20, and n is an integer ranging from 10 to 84. The fluorene-benzodi(benzothiadiazole) containing copolymer contains a new benzodi(benzothiadiazole) conjugated unit, the absorption spectrum of the copolymer undergoes red shift and has a high matching degree with a solar spectrum. Meanwhile, with a planar conjugated structure, the copolymer provided by the invention has the advantages of high charge carrier migration rate and high energy conversion efficiency, simple and controllable preparation method, and has good application prospects in polymer solar cells, organic light-emitting devices and other photoelectric material fields.

The invention provides an alkylene fluorene and thieno[3, 4-b]pyrazine containing polymer, a preparation method thereof and an organic solar cell. The alkylene fluorene and thieno[3, 4-b]pyrazine containing polymer is a polymer P with a general formula as the following, wherein R1 is straight chain or branched chain alkyl of C4-C40; R2 is H atom, F atom or straight chain or branched chain alkyl of C4-C40; and n is an integer of 10-100. The polymer can increase the transmission performance of a charge carrier, is conducive to effective transfer of the charge carrier, and increases the spectral absorption range. Also, the preparation method is simple and mature, and can effectively improve the light conversion efficiency of a solar cell when used for preparation of the organic solar cells. (formula of polymer P).

The invention discloses a flame-retardant, toughened and biodegradable polylactic acid material and a preparation method thereof. The method comprises melting and blending polylactic acid, unsaturated polyester, an initiator, a flame retardant and a synergistic flame retardant The vertical burning UL-94 of the obtained material is V-0 level, the limiting oxygen index is 27-34%, the elongation at break is 104-248%, the yield strength is 30-41MPa, and the notched impact strength is 10-35kJ / m 2 . The polylactic acid material provided by the present invention not only successfully improves the toughness of polylactic acid by utilizing the cross-linked structure formed by its in-situ dynamic vulcanization and grafting reaction with the polylactic acid substrate, but also the network structure formed after the dynamic vulcanization of carbon-carbon double bonds. It is very stable and not easily damaged by flame retardants, and avoids the problem of destroying the toughening effect after adding flame retardants in the prior art.

The invention provides an alkylene fluorene and thieno[3, 4-b]thiophene containing polymer, a preparation method thereof and an organic solar cell. The alkylene fluorene and thieno[3, 4-b]thiophene containing polymer is a polymer P with a general formula as the following, wherein R1 and R2 are straight chain or branched chain alkyl of C4-C40; R3 is H atom or F atom; and n is an integer of 10-100. The polymer can increase the transmission performance of a charge carrier, is conducive to effective transfer of the charge carrier, and increases the spectral absorption range. Also, the preparation method is simple and mature, and can effectively improve the light conversion efficiency of a solar cell when used for preparation of the organic solar cells. (formula of polymer P).

The invention provides a copolymer containing [3,4-b]dithiophene-benzobis(benzothiadiazole), a preparation method and applications thereof. The structural formula of the copolymer is represented in the description as a compound P, in the structural formula, the R1 and R2 are individually selected from C1-C20 alkyl groups, the R3 is selected from H group or C1-C20 alkyl groups, and n is an integer in a range of 1 to 100. The copolymer comprises a novel benzobis(benzothiadiazole) conjugated unit, thus the absorption spectrum of the copolymer has red shift phenomenon and has a high matching degree with the sunlight spectrum, the carrier migration speed and the energy conversion efficiency are improved, the preparation method of the copolymer is simple and controllable, so that the copolymer has a very good application prospect in the fields of polymer solar cells and organic electroluminescence devices. The structure formula of the copolymer is represented in the description.

The invention relates to a method for promoting photochemical reduction of CO2 and N2 by using sodium sulfite. The method comprises the following steps: adding sodium sulfite into water; introducing CO2 or N2; controlling the pH value of the system to 5.0-9.0; and performing ultraviolet irradiation on the system to realize reduction of CO2 and N2 in an ultraviolet irradiation condition enabling a photosensitive reaction of the sodium sulfite. In the method, inert molecule activation obstacle in traditional photochemical system is solved, and the 'bottleneck reaction' in the CO2 reduction and nitrogen fixation processes is overcome; and moreover, the whole reaction process is performed in a water phase, and an organic sacrificial agent is not needed. When applied to CO2 reduction and nitrogen fixation reactions, the method has the advantages of high efficiency, high selectivity, environmental friendliness, no secondary pollution and the like.

The invention provides a triphenylamine-benzodi(benzothiadiazole) containing copolymer, preparation and application thereof. The triphenylamine-benzodi(benzothiadiazole) containing copolymer is a compound P with a structural formula shown as the specification, wherein R1 and R2 are alkyl of C1-C20, R3 is H, alkyl of C1-C20 or alkoxy of C8, and n is an integer ranging from 1 to 100. The triphenylamine-benzodi(benzothiadiazole) containing copolymer contains a new benzodi(benzothiadiazole) conjugated unit, the absorption spectrum of the copolymer undergoes red shift and has a high matching degree with a solar spectrum. Meanwhile, with a planar conjugated structure, the copolymer provided by the invention has the advantages of high charge carrier migration rate and high energy conversion efficiency, simple and controllable preparation method, and has good application prospects in polymer solar cells, organic light-emitting devices and other photoelectric material fields.

The invention provides an application of a compound with a general formula AM2O5-x in catalyzing hydrogen peroxide at room temperature, a catalyst provided by the invention is mullite type composite oxide AM2O5-x, A is any one or more of lanthanide series metal elements, Sm, Bi and Y, M is any one or more of first transition series transition metal elements, and x is between 0 and 1. The compound with the general formula AM2O5-x has an excellent effect of catalytically decomposing gas-phase and / or liquid-phase hydrogen peroxide at room temperature; the catalyst has two coordination units taking transition metals as centers, and the coordination oxygen activity is higher, so that the catalyst has extremely high stability when being used for treating gas-phase and / or liquid-phase hydrogen peroxide at room temperature, and the service life is very long; the AM2O5-x compound does not contain noble metal, so that the cost is relatively low; meanwhile, the preparation method of the compound is relatively mature and simple in the prior art, so that mass production can be performed for large-scale hydrogen peroxide decomposition treatment; furthermore, through experimental verification, the device can be suitable for hydrogen peroxide treatment in different industries and under various environmental conditions.

The present invention provides a polymer containing thienothiophene, benzothiadiazole and cyclopentadithiophene, a preparation method and an application thereof. The polymer is a polymer P having the following general formula, wherein R1 and R2 are the same or different H or C1-C12 alkyl, and n is a natural number of 5-60. According to the present invention, the three units such as thienothiophene, benzothiadiazole and cyclopentadithiophene in the polymer are combined to form the repeated unit having the acceptor-donor-acceptor-donor (A-D-A-D) form so as to enhance the charge transporting in the polymer molecule, reduce the band gap of the polymer, and expand the light absorption range of the polymer material, such that the polymer has characteristics of excellent sunlight matching property, excellent carrier mobility property and simple and controllable preparation method, and has good application prospects in the fields of polymer solar cells, organic electroluminescent devices and other optoelectronic materials. The polymer P is as the follow.

The invention discloses an anticorrosive resin coating and a production method thereof. The coating comprises, by weight, 12-18 parts of cellulose acetate butyrate, 12-20 parts of silyl acrylate, 15-22 parts of water-soluble epoxy acrylic resin, 6-11 parts of sodium bisulfite, 10-16 parts of silicone resin, 8-12 parts of calcium stearate, 7-12 parts of isooctyl acrylate, 8-14 parts of quartz sands, 5-10 parts of linseed oil, 8-14 parts of trimethylolpropane, 4-10 parts of hydrogenated styrene, 8-14 parts of carbon black, 6-10 parts of a tackifier, 8-16 parts of rosin water, 5-10 parts of silica powder and 5-9 parts of molybdenum disulfide. The anticorrosive resin coating has a wide application range, can be applied to the fields of large-area outdoor floor decoration, wall decoration and the like, and also has the advantages of low cost and high viscosity.

The invention provides a benzothiophene-silole-di(diazosulfide)-containing copolymer as well as preparation and application thereof. The benzothiophene-silole-di(diazosulfide)-containing copolymer is a copolymer P having a general formula as shown in the specification, wherein R1 and R2 respectively represent C1-C20 alkyl, R1 and R2 respectively represent H or C1-C20 alkyl, and n represents an integer of 1-100. The benzothiophene-silole-di(diazosulfide)-containing copolymer contains novel benzothiophene-(diazosulfide) conjugated units having high matching rates with a solar spectrum and is in a planar conjugated structure, so that the migration rate of a current carrier is high, and the energy conversion efficiency is increased; the preparation method is simple and controllable and has good application prospects in the fields of photoelectric materials including polymer solar cells, organic electroluminescence devices and the like.

The invention provides a benzothiophene-silole-di(diazosulfide)-containing copolymer as well as preparation and application thereof. The benzothiophene-silole-di(diazosulfide)-containing copolymer is a copolymer P having a general formula as shown in the specification, wherein R1 and R2 respectively represent C1-C20 alkyl, R1 and R2 respectively represent H or C1-C20 alkyl, and n represents an integer of 1-100. The benzothiophene-silole-di(diazosulfide)-containing copolymer contains novel benzothiophene-(diazosulfide) conjugated units having high matching rates with a solar spectrum and is in a planar conjugated structure, so that the migration rate of a current carrier is high, and the energy conversion efficiency is increased; the preparation method is simple and controllable and has good application prospects in the fields of photoelectric materials including polymer solar cells, organic electroluminescence devices and the like.

The invention provides a copolymer containing benzothiophene-silole di(diazosulfide) and a preparation method and application thereof. The copolymer containing benzothiophene-silole di(diazosulfide) is a copolymer P with a general formula shown in the specification, wherein R1 and R2 are C1-20 alkyl, R3 and R4 are C1-20 alkyl or C1-20 alkoxyl, and n is an integer from 1 to 100. The copolymer containing benzothiophene-silole di(diazosulfide) provided by the invention comprises a new silole di(diazosulfide) conjugating unit, has high matching rate with a solar spectrum. Meanwhile, the copolymer is in a planar conjugated structure and the carrier migration rate is high, so that the energy conversion ratio is improved. The preparation method is simple and controllable. The copolymer has a very good application prospect in the photoelectric material fields such as polymer solar batteries and organic electroluminescent apparatuses.

The invention provides a copolymer containing alkylene fluorene and dithiophene-pyrrole, and a preparation method and applications thereof. The copolymer containing alkylene fluorene and dithiophene-pyrrole is a compound P represented by a structure formula shown in the description, wherein R1 and R2 are used for representing linear alkyl or branched alkyl with 4 to 40 carbon atoms independently, and n is an integer selected from 10 to 100. The copolymer containing alkylene fluorene and dithiophene-pyrrole possesses excellent photoelectric properties and heat stability, can be dissolved in organic solvents, and can be used as an electron donor layer to match an electron acceptor layer, and to prepare organic photovoltaic cells, so that inner-ordering, inter-ordering, inner-regularity and inter-regularity of photovoltaic material molecular chains are improved, carrier mobility and photoelectric conversion efficiency of the organic photovoltaic cells are increased, and application prospect of the copolymer containing alkylene fluorene and dithiophene-pyrrole in the field of polymer solar cell photoelectric material is promising.

The invention provides a copolymer containing dithieno (3,2-b:2',3'-d) thiophene-silole (2,3-b:3',2'-d) (diazosulfide) as well as a preparation method and an application of the copolymer. The copolymer provided by the invention is a copolymer P which has the general formula shown in the specification, wherein in the formula, R1 and R2 represent alkyl groups of C1 to C20; R3 and R4 represent H or alkyl groups of C1 to C20; n represents an integer between 1 and 100. The copolymer contains a new silole (2,3-b:3',2'-d) (diazosulfide) conjugation unit which has a high matching degree with solar spectrum and is of a plane conjugation structure at the same time, so that the charge carrier migration rate is high. Thus, the energy conversion efficiency is improved. A preparation method of the copolymer is simple and controllable. As a result, the copolymer provided by the invention has good application prospects in the fields of polymer solar cells, organic electroluminescent devices and other photoelectric materials.

The invention provides a copolymer containing dibenzothiophene-silole-di(diazosulfide) as well as a preparation method and an application thereof. The copolymer containing dibenzothiophene-silole-di(diazosulfide) is a copolymer P with the general formula as shown in the specification, wherein R1 and R2 are C1-C20 alkyls, R3 is H or C1-C20 alkyls, and n is an integer between 1 and 100 in the formula. The copolymer containing the dibenzothiophene-silole-di(diazosulfide) disclosed by the invention contains a new silole-di(diazosulfide) conjugated unit, is high in matching degree with a solar spectrum, and simultaneously is in a planer conjugate structure, and high in vector migration rate, the energy conversion efficiency is improved, and the preparation method is simple and controllable, and has a good application prospect in the photoelectric material fields such as a polymer solar cell, an organic light-emitting device and the like.