Method for preparing aromatic polyketone

Abstract

The invention relates to a method for preparing aromatic polyketone. The aromatic polyketone is prepared by reacting an aromatic double Grignard reagent with aromatic binary acyl halide or aromatic binary ester or aromatic binary nitrile. The preparation method comprises the following steps: firstly, preparing a corresponding aromatic double Grignard reagent; and reacting the prepared aromatic double Grignard reagent with a tetrahydrofuran mixed solution of aromatic binary acyl halide or aromatic binary ester or aromatic binary nitrile at 20-50 DEG C for 4-24 hours, and purifying to obtain the aromatic polyketone. The method has the advantages of mild reaction conditions, short reaction time, simple operation and cheap reactants. The aromatic polyketone prepared by the method has the advantages of high regularity, high heat resistance, simple process, low cost and the like, can be used as a high polymer material, can also be used as a binder for coatings, ink and adhesives, and is used for improving the hardness, gloss and other properties of the coatings, the ink and the adhesives.

Description

Technical Field

[0001] The present invention relates to the technical field of drug synthesis, and in particular to a method for preparing aromatic polyketone, and a preparation method and application thereof. Background Art

[0002] Aromatic polyketones are aromatic polymers composed of phenylene rings connected by carbonyl groups. As a new type of functional material, organic aromatic polymers have rich functional properties such as light, electricity, and magnetism. Aromatic polymers have strong light-capturing capabilities and can be used to amplify fluorescent sensing signals, playing an increasingly important role in disease diagnosis, photovoltaic materials, and biological detection. In recent years, the application of aromatic polymers in fluorescence imaging at the cell and animal levels and in the biomedical field has also received great attention.

[0003] However, there are currently very few monomers for aromatic polymers and aromatic polymers with excellent photothermal properties, and their properties, especially processability, charge carrier mobility, on / off ratio and stability, still have room for further improvement. Compared with polyacetylene, aromatic polyketones have benzene rings and carbonyl groups on the main chain, have higher heat resistance and hardness, and the benzene rings can have substituents, which can adjust the wettability, affinity and other properties of aromatic polyketones. Compared with aromatic polymers containing sulfur, nitrogen, etc., dark colors caused by oxidation can be avoided.

[0004] Aromatic polyketones are thermoplastic resins with a special structure. They have excellent mechanical properties, resistance to solvents and chemical corrosion, heat resistance, strong light capture and electrical conductivity. They are mainly used as photovoltaic materials, fluorescent sensor signal amplification materials in the biomedical field, and conductive materials. They are used in disease diagnosis, biological detection, solar cells, conductive plastics and other fields. However, the conventional method for obtaining aromatic polyketones is to obtain them by polymerization using nucleophilic aromatic substitution reactions, which has the disadvantages of long reaction time and the need to use precious metals as catalysts.

[0005] Based on the needs of industry and practical applications, it is necessary to find a method for synthesizing a new aromatic polyketone with better performance, simple process and low cost. Summary of the invention

[0006] The purpose of the present invention is to synthesize linear aromatic polyketones by stepwise polymerization using highly selective phenyl or biphenyl di-Grignard reagents to react with phenyl or biphenyl dichloride, dibasic ester, and dinitrile, so as to make up for the problem that there is no aromatic polyketone in the existing aromatic polymers. Since the polyketone has excellent thermal stability, mechanical properties, and corrosion resistance, it can make up for the defects of the existing aromatic polymers and prepare products with better performance. And by introducing phenyl substituent groups, the properties of the aromatic polyketone, including wettability, affinity, and processability, are adjusted.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A method for preparing an aromatic polyketone comprises the following steps:

[0009] A. Obtain double Grignard reagent;

[0010] B. dissolving the aromatic binary substituent in a reaction solvent, and under the protection of an inert gas, dropping the di-Grignard reagent to carry out a polymerization reaction to obtain a crude product; dropping the di-Grignard reagent under the protection of an inert gas can prevent the di-Grignard reagent from reacting with oxygen and water in the air, which would lead to reaction failure.

[0011] C. Purifying the crude product to obtain aromatic polyketone.

[0012] The aromatic disubstituted product includes one or more of aromatic diacyl halides, aromatic diesters, or aromatic dinitriles. The aromatic polyketone is prepared by reacting an aromatic bis-Grignard reagent with an aromatic diacyl halide, aromatic diester, or aromatic dinitriles. The aromatic polyketone is a poly(carbonyl-phenylene) and a poly(carbonyl-phenylene) containing a substituted side group.

[0013] The invention can prepare the corresponding double Grignard reagent by using phenyl dihalide as raw material. The prepared double Grignard reagent is reacted with a tetrahydrofuran solution of one or more of phenyl or biphenyl dicarboxylic acid halide, phenyl or biphenyl dicarboxylic acid ester, phenyl or biphenyl dinitrile to prepare a crude aromatic polyketone product. After purification, a refined aromatic polyketone is obtained.

[0014] The reaction of phenyl and substituted phenyl or biphenyl di-Grignard reagents with phenyl or biphenyl dibasic esters, dibasic acyl halides, and dibasic nitriles has good selectivity, and can generate new aromatic polyketones with regular structures, which can make up for the defects of existing aromatic polymers, expand the scope of aromatic polymers, and prepare high-performance optoelectronic biomaterials. In addition, aromatic polyketones have many advantages such as high regularity, strong heat resistance, simple process, and low cost. They can be used as polymer materials, and can also be used as coatings, inks, and adhesives as binders to improve the hardness, gloss and other properties of coatings, inks, and adhesives.

[0015] The substituents of the phenyl dihalide, phthaloyl halide, phthalate, and phthalonitrile may be in one or more of the para, ortho, or meta positions; the phenyl may be substituted by a biphenyl group, and the phenyl dihalide, phthaloyl halide, phthalate, and phthalonitrile may also contain substituents such as an alkyl group, an aromatic group, an alicyclic group, a halogen, a sulfonic acid group, and a nitro group.

[0016] Preferably, the double Grignard reagent includes an aromatic double Grignard reagent; the operation of step A includes: mixing iodine particles, dihaloaryl hydrocarbons, and magnesium powder in a reaction solvent, heating under the protection of an inert gas, and performing an ultrasonic reaction to obtain the double Grignard reagent.

[0017] Unlike the use of Grignard reagents to synthesize small molecules, by-product impurities can be removed by conventional impurity removal methods after the reaction technology. When synthesizing high molecular weight materials such as aromatic polyketones, even if only 1% of the side reactions exist, it is possible to cause the interruption of the polymerization reaction, and the aromatic polyketone cannot be successfully synthesized or only aromatic polyketones with very small molecular weight can be obtained. If the double Grignard reagent reacts completely with oxygen or water, the reaction cannot proceed. If one end of the double Grignard reagent reacts with oxygen or water, a capping is formed, which will seriously affect the molecular weight produced. Other influencing factors include the content of the double Grignard reagent, the appropriate reaction conditions with the binary substituent, etc., which will also have a serious impact on the molecular weight of the aromatic polyketone. After long-term research and continuous experiments, the present invention successfully prepared high molecular weight polycarbosilane by selecting and synthesizing a high content of double Grignard reagents, appropriate reaction conditions with the binary substituents, and post-treatment.

[0018] Preferably, in step A, the molar ratio of the dibromoaromatic hydrocarbon to the magnesium powder is 1:3; the ultrasonic power of the ultrasonic reaction is 300 to 1500 W, the reaction temperature is 20° C. to 60° C., and the reaction time is 0.2 to 2 h.

[0019] Preferably, in step B, the polymerization reaction comprises the following general formula:

[0020]

[0021] The phenyl group in the formula also includes the copolymerization by exchanging with biphenyl or naphthyl, or adding at the same time;

[0022] X=F, Cl, Br, I;

[0023] Y = COOR", COX', CN;

[0024] R includes one or more of hydrogen, alkyl, aryl or alicyclic group, halogen, sulfonic acid group, and nitro group;

[0025] R' includes one or more of hydrogen, alkyl, aryl or alicyclic group, halogen, sulfonic acid group, and nitro group;

[0026] R" includes one or more of an alkyl group, an aryl group or an alicyclic group;

[0027] X'=Cl, Br, I.

[0028] The aromatic double Grignard reagent includes one or more of a terephthalene dihalogen double Grignard reagent, an isophthalene dihalogen double Grignard reagent, an orthophthalene dihalogen double Grignard reagent, and a biphenyl dihalogen double Grignard reagent, and the halogen contained includes one of fluorine, chlorine, bromine and iodine. The double Grignard reagent can be a phenyl or biphenyl or naphthyl dihalogen double Grignard reagent containing an alkyl, aryl or alicyclic group, a halogen, a sulfonic acid group, or a nitro substituent on the benzene ring.

[0029] Preferably, the inert gas includes one or more of nitrogen and argon; the reaction solvent includes tetrahydrofuran; the quencher includes an alcohol, an acid or water, specifically including one or more of methanol, ethanol, butanol, formic acid, acetic acid, butyric acid and water.

[0030] Preferably, in step B, the dropping process of the double Grignard reagent includes slow dropping and rapid stirring, and the dropping time includes 0.1 to 0.5 hours; the reaction temperature of the polymerization reaction includes 20 to 50° C., and the reaction time includes 4 to 24 hours; the cooling temperature includes room temperature; and the reaction time of the quenching reaction includes 1 to 2 hours.

[0031] The double Grignard reagent needs to be added slowly, with a total addition time of 0.1 to 0.5 hours to prevent the reaction from being too violent and causing side reactions.

[0032] Preferably, the aromatic dibasic substituent includes one or more of aromatic dibasic acyl halides, aromatic dibasic esters, and aromatic dibasic nitriles;

[0033] When the aromatic dibasic substitution product includes an aromatic dibasic acyl halide, the purification treatment in step C includes: washing the crude product with water, then washing with an alkali agent, filtering and washing with water until neutral, washing with an organic solvent, and drying to obtain the aromatic polyketone;

[0034] When the aromatic dibasic substituent includes an aromatic dibasic ester, the purification treatment in step C includes: washing the crude product with water and an alcohol agent in sequence and precipitating it in an alcohol agent to obtain the aromatic polyketone;

[0035] When the aromatic disubstituted product includes an aromatic dinitrile, the purification treatment in step C includes: washing the crude product with water and an alcohol agent in sequence, extracting with an alcohol agent and precipitating in an alcohol agent to obtain the aromatic polyketone.

[0036] When different raw materials are selected, the small molecule by-products produced by the reaction are different, so different methods are required for purification.

[0037] The aromatic dicarboxylic acid halide is one or more of terephthaloyl halide, phthaloyl halide, isophthaloyl halide, biphenyl or naphthyl dicarboxylic acid halide, and the halogen in the aromatic dicarboxylic acid halide can be one or more of chlorine, bromine and iodine. The aromatic dicarboxylic acid halide can be a phenyl dicarboxylic acid halide containing an alkyl, aryl or alicyclic group, a halogen, a sulfonic acid group or a nitro substituent on the benzene ring.

[0038] The aromatic dibasic ester includes one or more of phthalate, isophthalate, terephthalate, and biphenyl diphthalate, and the alkyl group of the aromatic dibasic ester includes one or more of alkyl, aryl, or alicyclic phthalate. The phenyl or biphenyl dimethyl ester can be a phenyl or biphenyl dimethyl ester containing an alkyl, aryl, or alicyclic group, halogen, sulfonic acid group, or nitro substituent on the benzene ring.

[0039] The aromatic dinitrile is one or more of terephthalonitrile, phthalonitrile, isophthalonitrile and biphenyl dicarbonitrile. The phenyl dicarbonitrile or biphenyl dicarbonitrile can be a phenyl or biphenyl dicarbonitrile containing an alkyl, aryl or alicyclic group, halogen, sulfonic acid group or nitro substituent on the benzene ring.

[0040] Preferably, in step C, the alkaline agent includes sodium hydroxide solution, and the alcohol agent includes methanol, ethanol, or butanol.

[0041] An aromatic polyketone product obtained by the above method for preparing an aromatic polyketone.

[0042] The aromatic polyketone prepared by the above synthesis method has a low degree of branching, and the product is a linear aromatic polyketone, which has good heat resistance and processability, strong light capture ability and electrical conductivity. The molecular weight can be controlled by feed ratio, reaction time and reaction temperature.

[0043] The aromatic polyketone can be modified by adjusting the feed ratio, raw materials and formula to obtain modified aromatic polyketone.

[0044] An application of the above aromatic polyketone product is characterized in that it is used for one or more of light capture, electrical conduction, preparation of disease diagnosis equipment or preparations, preparation of biological detection equipment or preparations, coatings, inks, adhesives, and special plastics.

[0045] The aromatic polyketone has good heat resistance and processability, strong light capture ability and electrical conductivity, and is mainly used as photovoltaic materials, fluorescent sensor signal amplification materials in the biomedical field, and conductive materials. It is used in the fields of disease diagnosis, biological detection, solar cells, conductive plastics, etc. The prepared aromatic polyketone has many advantages such as high regularity, strong heat resistance, simple process, low cost, etc. It can be used as a polymer material, as a special plastic, and also as a coating, ink, adhesive binder to improve the hardness, gloss and other properties of coatings, inks, and adhesives.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The invention has a simple preparation process, high activity and good selectivity of the double Grignard reagent, and can prepare linear aromatic polyketones with high regularity under mild conditions. Aromatic polyketones with different molecular weights can be prepared by controlling the reaction temperature, time, feed ratio and substrate selection.

[0048] The present invention prepares aromatic polyketone by using aromatic di-Grignard reagent and aromatic dibasic acid chloride, aromatic dibasic ester and aromatic dibasic nitrile. The reaction conditions are mild and the reaction can be carried out at room temperature and normal pressure. The reaction conditions are mild and the reaction time is short. Since high temperature and high pressure are not involved, the operation is simple. The reactants are halogenated hydrocarbons and esters, acid chlorides and nitrile, which are easy to purchase, store and transport. The reactant selectivity is high, and a linear aromatic polyketone with high regularity is prepared, which has high heat resistance and crystallinity.

[0049] The invention has mild reaction conditions, short reaction time, simple operation, and cheap reactants. The reactant selectivity is high, and the occurrence of side reactions such as branching is effectively reduced. The prepared aromatic polyketone has many advantages such as high regularity, strong heat resistance, simple process, low cost, etc., and can be used as a polymer material, and can also be used as a coating, ink, and adhesive linker to improve the hardness, gloss and other properties of the coating, ink, and adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is the infrared spectrum of poly(carbonyl-1,4-phenylene) prepared from terephthalonitrile of the present invention;

[0051] Figure 2 The poly (carbonyl-1,4-phenylene) prepared by using terephthaloyl chloride of the present invention 13 C-SSNMR spectrum;

[0052] Figure 3 This is the thermal weight loss curve of poly(carbonyl-1,4-phenylene) prepared by using terephthaloyl chloride in the present invention;

[0053] Figure 4This is the DSC graph of poly(carbonyl-1,4-phenylene) prepared by using terephthaloyl chloride in the present invention;

[0054] Figure 5 This is the GPC spectrum of poly(carbonyl-1,4-phenylene) prepared by the terephthalate method of the present invention. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] Example 1

[0057] Add 3.54g of p-dibromobenzene, 1 grain of iodine, and 40mL of tetrahydrofuran to a dry Schlenk bottle, evacuate and replace argon three times, and ultrasonically heat at 40℃ for 20min to prepare p-dibromobenzene di-Grignard reagent. Add 3.03g of terephthaloyl chloride and 60mL of tetrahydrofuran to a dry double-necked bottle, evacuate and replace argon three times. Slowly drop p-dibromobenzene di-Grignard reagent into the double-necked bottle, stir rapidly, and react at room temperature for 8h. Add 40mL of 36% acetic acid solution to the double-necked bottle and stir at room temperature for 3h. Filter, take the upper layer of powder and put it into a single-necked bottle, add 50mL of 20% sodium hydroxide solution, and ultrasonicate for 20min. Filter, take the upper layer of powder and wash with water until neutral. Wash with a large amount of tetrahydrofuran and dry. Aromatic polyketone is obtained.

[0058] The aromatic polyketone prepared in this embodiment has a melting point of 344°C, a temperature of 408°C when the weight loss is 5%, a temperature of 630°C when the weight loss is 50%, and a weight loss of 63% at 800°C, and has good heat resistance. The number average molecular weight of the aromatic polyketone prepared in this embodiment is 21430 g / mol, and the weight average molecular weight is 44320 g / mol.

[0059] Example 2

[0060] Add 2.55g of p-chlorodiphenyl, 1 grain of iodine, and 40mL of tetrahydrofuran to a dry Schlenk bottle, evacuate and replace with argon three times, and ultrasonically heat at 40℃ for 35min to prepare p-chlorodiphenyl di-Grignard reagent. Add 5.95mL of dioctyl terephthalate and 60mL of tetrahydrofuran to a dry double-necked bottle, evacuate and replace with argon three times. Slowly drop p-chlorodiphenyl di-Grignard reagent into the double-necked bottle, stir rapidly, and react at 50℃ for 12h. Add 40mL of 36% acetic acid solution to the double-necked bottle and stir at room temperature for 1h. Evaporate to dryness by rotary evaporation. Wash with water and ethanol, and dry. Add a small amount of tetrahydrofuran to dissolve and precipitate in ethanol. Filter and dry. Aromatic polyketone is obtained.

[0061] The number average molecular weight of the aromatic polyketone prepared in this example is 12565 g / mol, and the weight average molecular weight is 33360 g / mol.

[0062] Example 3

[0063] Add 3.46g 2-methyl-p-diiodobenzene, 1 iodine, 40mL tetrahydrofuran to a dry Schlenk bottle, evacuate and replace argon three times, and ultrasonically heat at 30℃ for 35min to prepare 2-methyl-p-diiodobenzene bis-Grignard reagent. Add 1.92g terephthalonitrile and 60mL tetrahydrofuran to a dry double-necked bottle, evacuate and replace argon three times. Slowly drop 2-methyl-p-diiodobenzene bis-Grignard reagent into the double-necked bottle, stir rapidly, and react at 50℃ for 20h. Add 40mL 20% tetrahydrofuran aqueous solution to the double-necked bottle and stir at 50℃ for 1h. Evaporate to dryness. Wash with water and ethanol, extract with ethanol for 24h, and dry. Add a small amount of tetrahydrofuran to dissolve and precipitate in ethanol. Filter and dry. Aromatic polyketone is obtained.

[0064] The number average molecular weight of the aromatic polyketone prepared in this example is 42320 g / mol, and the weight average molecular weight is 73245 g / mol.

[0065] Example 4

[0066] Add 4.31g 4,4'-dibromobiphenyl, 1 iodine, 40mL tetrahydrofuran to a dry Schlenk bottle, evacuate and replace argon 3 times, and ultrasonically heat at 40℃ for 20min to prepare dibromobenzene di-Grignard reagent. Add 5.65g 4,4'-diacyl chloride biphenyl and 40mL tetrahydrofuran to a dry double-necked bottle, evacuate and replace argon 3 times. Slowly drop the dibromobiphenyl di-Grignard reagent into the double-necked bottle, stir rapidly, and react at room temperature for 14h. Add 40mL 36% acetic acid solution to the double-necked bottle and stir at room temperature for 3h. Filter, take the upper layer of powder and put it into a single-necked bottle, add 50mL of 20% sodium hydroxide solution, and ultrasonicate for 20min. Filter, take the upper layer of powder and wash with water until neutral. Wash with a large amount of tetrahydrofuran and dry. Aromatic polyketone is obtained.

[0067] The number average molecular weight of the aromatic polyketone prepared in this example is 11320 g / mol, and the weight average molecular weight is 20850 g / mol.

[0068] Example 5

[0069] Add 5.20g 2,2'-dimethyl-4,4'-dichlorobiphenyl, 1 iodine, 40mL tetrahydrofuran to a dry Schlenk bottle, evacuate and replace argon three times, and ultrasonically heat at 40℃ for 35min to prepare 2,2'-dimethyl-4,4'-dichlorobiphenyl bis-Grignard reagent. Add 5.95mL dioctyl terephthalate, 2g diethyl terephthalate, 40mL tetrahydrofuran to a dry double-necked bottle, evacuate and replace argon three times. Slowly drop bis(4-bromophenyl) ether bis-Grignard reagent into the double-necked bottle, stir rapidly, and react at room temperature for 6h. Add 40mL 10% ethanol tetrahydrofuran solution to the double-necked bottle and stir at 30℃ for 1h. Evaporate to dryness by rotary evaporation. Wash with water, wash with ethanol, and dry. Add a small amount of tetrahydrofuran to dissolve and precipitate in ethanol. Filter and dry. Aromatic polyketone is obtained.

[0070] The number average molecular weight of the aromatic polyketone prepared in this example is 6300 g / mol, and the weight average molecular weight is 12450 g / mol.

[0071] Example 6

[0072] Add 4.05g of p-dibromobenzene, 1 grain of iodine, and 40mL of tetrahydrofuran to a dry Schlenk bottle, evacuate and replace argon three times, and ultrasonically heat at 40℃ for 35min to prepare p-dibromobenzene di-Grignard reagent. Add 2.90g of 4,4' dinitrile biphenyl and 40mL of tetrahydrofuran to a dry two-necked bottle, evacuate and replace argon three times. Slowly drop p-dibromobenzene di-Grignard reagent into the two-necked bottle, stir rapidly, and react at 50℃ for 24h. Add 40mL of 36% acetic acid solution to the two-necked bottle and stir at room temperature for 1h. Evaporate to dryness by rotary evaporation. Wash with water and ethanol, extract with ethanol for 24h, and dry. Add a small amount of tetrahydrofuran to dissolve and precipitate in ethanol. Filter and dry. Aromatic polyketone is obtained.

[0073] The aromatic polyketone prepared in this example has a number average molecular weight of 3600 g / mol and a weight average molecular weight of 6410 g / mol.

[0074] Effect Example 1

[0075] In Examples 1-6, phenyl dihalide and biphenyl dihalide can be replaced by each other. Phenyl diacyl halide, phenyl diester, phenyl dinitrile, biphenyl diacyl halide, biphenyl diester, and biphenyl dinitrile can be replaced by each other by each other.

[0076] The poly(carbonyl-1,4-phenylene) prepared according to the method described in Examples 1-6 was characterized by IR, solid-state NMR, TGA, DSC, and GPC. Figure 1-5 As shown. Figure 1 and Figure 2 The structure of the prepared poly(carbonyl-1,4-phenylene) can be confirmed by the infrared spectrum and solid-state nuclear magnetic spectrum. Figure 3 The thermal decomposition temperature shows that the prepared poly(carbonyl-1,4-phenylene) has good heat resistance. Figure 4 The presence of a crystallization peak indicates that the measured poly(carbonyl-1,4-phenylene) has good structural regularity, crystallinity and good heat resistance; Figure 5 The molecular weight of poly(carbonyl-1,4-phenylene) is unimodal, indicating that there is only one reaction mechanism for preparing poly(carbonyl-1,4-phenylene) by this method, which is conducive to controlling the reaction.

[0077] The above disclosure is only the preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for preparing an aromatic polyketone, characterized in that: The steps include: A. Obtain double Grignard reagent; B. dissolving the aromatic binary substituent in a reaction solvent, adding the di-Grignard reagent dropwise under the protection of an inert gas to carry out a polymerization reaction, then cooling, adding a quenching agent to carry out a quenching reaction, and obtaining a crude product; C. Purifying the crude product to obtain aromatic polyketone.

2. The method for preparing an aromatic polyketone according to claim 1, characterized in that: The double Grignard reagent includes an aromatic double Grignard reagent; the operation of step A includes: mixing iodine particles, dihaloaryl hydrocarbons, and magnesium powder in a reaction solvent, heating under the protection of an inert gas to perform an ultrasonic reaction, and obtaining the double Grignard reagent.

3. The method for preparing an aromatic polyketone according to claim 2, characterized in that: In step A, the molar ratio of the dihalogenated aromatic hydrocarbon to the magnesium powder is 1:3; the ultrasonic power of the ultrasonic reaction is 300 to 1500 W, the reaction temperature is 20° C. to 60° C., and the reaction time is 0.2 to 2 h.

4. The method for preparing an aromatic polyketone according to claim 1, characterized in that: In step B, the polymerization reaction comprises the following general formula: The phenyl group in the formula also includes the copolymerization by exchanging with biphenyl or naphthyl, or adding at the same time; X=F, Cl, Br, I; Y = COOR", COX', CN; R includes one or more of hydrogen, alkyl, aryl or alicyclic group, halogen, sulfonic acid group, and nitro group; R' includes one or more of hydrogen, alkyl, aryl or alicyclic group, halogen, sulfonic acid group, and nitro group; R" includes one or more of an alkyl group, an aryl group or an alicyclic group; X'=Cl, Br, I.

5. The method for preparing an aromatic polyketone according to claim 1 or 2, characterized in that: The inert gas includes one or more of argon and nitrogen; the reaction solvent includes tetrahydrofuran; and the quenching agent includes one or more of methanol, ethanol, butanol, formic acid, acetic acid, butyric acid, and water.

6. The method for preparing an aromatic polyketone according to claim 1, characterized in that: In step B, the dropping process of the double Grignard reagent includes slow dropping and rapid stirring, and the dropping time includes 0.1 to 0.5 hours; the reaction temperature of the polymerization reaction includes 20 to 50° C., and the reaction time includes 4 to 24 hours; the cooling temperature includes room temperature; and the reaction time of the quenching reaction includes 1 to 2 hours.

7. The method for preparing an aromatic polyketone according to claim 1, characterized in that: The aromatic dibasic substituent includes one or more of aromatic dibasic acyl halides, aromatic dibasic esters, and aromatic dibasic nitriles; When the aromatic dibasic substitution product includes an aromatic dibasic acyl halide, the purification treatment in step C includes: washing the crude product with water, then washing with an alkali agent, filtering and washing with water until neutral, washing with an organic solvent, and drying to obtain the aromatic polyketone; When the aromatic dibasic substituent includes an aromatic dibasic ester, the purification treatment in step C includes: washing the crude product with water and an alcohol agent in sequence and precipitating it in an alcohol agent to obtain the aromatic polyketone; When the aromatic disubstituted product includes an aromatic dinitrile, the purification treatment in step C includes: washing the crude product with water and an alcohol agent in sequence, extracting with an alcohol agent and precipitating in an alcohol agent to obtain the aromatic polyketone.

8. The method for preparing an aromatic polyketone according to claim 7, characterized in that: In step C, the alkaline agent includes sodium hydroxide solution, and the alcohol agent includes methanol, ethanol, and butanol.

9. An aromatic polyketone product obtained by the method for preparing an aromatic polyketone as claimed in claim 1.

10. A use of the aromatic polyketone product as claimed in claim 9, characterized in that: Used for one or more of light capture, electrical conduction, preparation of disease diagnosis equipment or preparations, preparation of biological detection equipment or preparations, coatings, inks, adhesives, and special plastics.

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