Preparation method for low-disorder expanded Π-conjugated organic material

Abstract

Disclosed in the present application is a preparation method for a low-disorder expanded π-conjugated organic material. In the present application, commercial tetraaminobenzoquinone is used as a synthetic monomer, a hydrochloric acid solution is added, ultrasonic dispersion is performed, and sodium acetate is then added to obtain a turbid solution II; then, the turbid solution II is heated and stirred in flowing oxygen, and is then washed and dried; the resulting powder is put into dimethyl sulfoxide to obtain a turbid solution III; and then, the turbid solution III is subjected to aeration drying at a high temperature, and is then washed with ethanol, filtered, and dried in vacuum, so as to obtain a low-disorder expanded π-conjugated organic material. The organic material of the present application can expose more active sites and has a more open framework structure, such that the diffusion paths of potassium ions are reduced, the capacity and rate capability of TAPT can be significantly improved, and the problem of the capacity, the cycling stability and the ionic conductivity being difficult to improve at the same time when the organic electrode material is applied to a potassium-ion battery is solved. The preparation method of the present application has high cost efficiency, is simple, convenient and environment-friendly in terms of the preparation process, and is suitable for a wide range of applications. The organic material has good electrochemical performance.

Description

Preparation methods of low disordered extended π-conjugated organic materials

[0001] This application requests priority to the prior application with application number CN202510457840.9, application date 2025-04-14, entitled "Low-disordered extended π-conjugated organic materials and their preparation method and potassium-ion battery". Technical Field

[0002] This application relates to the field of electrochemical technology, and in particular to a method for preparing a low-disorder extended π-conjugated organic material. Background Technology

[0003] As the global energy structure shifts towards renewable energy, energy storage technology has become a crucial support for ensuring a stable energy supply. While renewable energy sources such as wind and solar power are clean and environmentally friendly, their intermittent and fluctuating nature makes it difficult to achieve stable power supply. Therefore, efficient energy storage technology is essential for energy dispatch, grid peak shaving, and distributed energy systems. Furthermore, the development of electric transportation, smart grids, and large-scale industrial energy storage has placed higher demands on the safety, cost, and performance of energy storage devices. Currently, lithium-ion batteries are the mainstream energy storage technology and are widely used in consumer electronics, transportation, and power systems. However, lithium resources are limited and unevenly distributed, and mining costs are high, affecting their long-term sustainable development. Therefore, developing new energy storage technologies based on more abundant resources is an important direction for achieving sustainable energy utilization. Potassium-ion batteries, due to their abundant resources, low cost, and good cycle stability, have become a powerful alternative to lithium-ion batteries. In recent years, they have shown broad application prospects in the field of large-scale energy storage.

[0004] Organic electrode materials exhibit significant advantages in potassium-ion batteries due to their diverse structures, wide availability, and environmental friendliness. Their electrochemical performance can be modulated through molecular design, resulting in greater tunability. Furthermore, they achieve reversible potassium-ion storage through covalent bonding, effectively mitigating volume expansion during potassium-ion insertion / extraction and thus improving cycle stability. In addition, most organic electrode materials are composed of light elements (such as C, H, O, and N), reducing reliance on rare metal resources, lowering costs, and enhancing sustainability. Therefore, the application of organic electrode materials in potassium-ion batteries holds promise for driving the development of low-cost, sustainable energy storage technologies and providing new solutions for large-scale energy storage and renewable energy utilization.

[0005] In potassium-ion batteries, high crystallinity, or high ordering, negatively impacts the capacity and electrochemical performance of organic electrode materials. First, high ordering leads to overly dense molecular arrangement, restricting potassium ion diffusion and affecting their insertion / extraction kinetics, thus reducing specific capacity and increasing battery polarization. Furthermore, the relatively large radius of potassium ions makes insertion into highly crystalline materials more difficult, further limiting reversible potassium storage capacity. Second, highly crystalline materials exhibit greater rigidity, making it difficult to adapt to volume changes during charge and discharge, easily leading to electrode cracking or pulverization, affecting cycle stability. Simultaneously, highly ordered packing may reduce the formation of a conductive network, limiting electron transport efficiency and increasing interfacial resistance. Therefore, appropriately reducing ordering and improving the structural flexibility and ion diffusion capacity of the material are important strategies for optimizing the performance of organic electrode materials.

[0006] Chinese patent CN114204020A discloses an organic electrode material (named 11-NH2) that is the same as the electrode material obtained in a paper entitled "A Small Molecular Symmetric All-Organic Lithium-Ion Battery" (DOI: 10.1002 / anie.202207221). However, the electrode material obtained by both is a typical highly crystalline organic material, that is, a highly ordered electrode material, rather than a low-disordered organic electrode material. Summary of the Invention

[0007] The purpose of this application is to overcome the negative impact on capacity and electrochemical performance caused by the highly ordered structure of organic electrode materials, and to provide a unique low-disorder extended π-conjugated organic material, its preparation method, and a potassium-ion battery. The method of this application uses commercially available tetraaminobenzoquinone (TABQ) as a monomer and sodium acetate as a catalyst to synthesize a highly crystalline precursor under acidic conditions. A subsequent disordering strategy yields a low-disorder extended π-conjugated organic material, namely, disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material. This organic electrode material, by achieving low structural disorder, exposes more active sites and possesses a more open framework structure, reducing potassium ion diffusion paths and significantly improving the capacity and rate performance of TAPT. Furthermore, the low structural disorder also endows TAPT with more complex intermolecular weak forces, reducing its solubility and further enhancing the cycle stability of the TAPT electrode. This addresses the challenges of low active site utilization, poor ionic conductivity, and poor cycle stability when highly ordered organic crystals are applied to potassium-ion batteries. In addition, the optimization strategy for low-disorder extended π-conjugated organic materials in this application has simple processing and high practicality, enabling the large-scale production of low-disorder extended π-conjugated organic materials while significantly improving the electrochemical performance of TAPT, thereby promoting the practical application of high-performance potassium-ion batteries. The application of this organic electrode material in novel high-efficiency energy storage devices has significant scientific value and practical application prospects.

[0008] The technical solution of this application is implemented as follows:

[0009] A method for preparing a low-disorder extended π-conjugated organic material includes the following steps:

[0010] (1) Tetraaminobenzoquinone was added to hydrochloric acid solution and dispersed by ultrasonication to obtain turbid liquid I;

[0011] (2) Transfer the obtained turbid liquid I to a reaction vessel, add sodium acetate to react, and obtain turbid liquid II;

[0012] (3) Transfer the obtained turbid liquid II to an oil bath, introduce flowing oxygen into the reaction vessel, and then heat and stir the turbid liquid II to obtain a precipitate.

[0013] (4) The precipitate was washed and filtered with deionized water and then dried under vacuum to obtain powder;

[0014] (5) The obtained powder was added to dimethyl sulfoxide to react and a turbid liquid III was obtained;

[0015] (6) The resulting turbid liquid III was transferred to a high-temperature blower box, heated and allowed to stand, then washed and filtered with ethanol, and then dried under vacuum to obtain the low disordered extended π conjugated organic material.

[0016] Furthermore, the turbid liquid I is a reddish-brown turbid liquid; the turbid liquid II is a blackish-red turbid liquid; the turbid liquid III is a dark green turbid liquid; the precipitate is a dark green precipitate; and the powder is a dark green powder.

[0017] Furthermore, the reaction vessel is a double-necked flask.

[0018] Furthermore, in step (1), the ultrasonic dispersion time is 14-20 min.

[0019] Furthermore, the concentration of the hydrochloric acid solution is 0.3-0.6 mol / L; the ratio of tetraaminobenzoquinone to hydrochloric acid solution is 780-880 mg: 40-60 mL.

[0020] Furthermore, the ratio of tetraaminobenzoquinone to sodium acetate is 780-880 mg: 3.2-3.4 g.

[0021] Furthermore, in step (3), the flow rate of the flowing oxygen is 10 mL / min; the temperature of the heating and stirring treatment is 80-90℃ and the heating time is 4-6 h.

[0022] Furthermore, in step (4), the temperature of the vacuum drying is 70-90℃.

[0023] Furthermore, the ratio of tetraaminobenzoquinone to dimethyl sulfoxide is 780-880 mg: 80-120 mL.

[0024] Furthermore, in step (6), the heating and settling process involves heating to 90-120°C and then settling for 10-14 hours; the vacuum drying temperature is 70-90°C.

[0025] A potassium-ion battery comprising a low-disorder extended π-conjugated organic material prepared by the method of this application.

[0026] Furthermore, the low-disorder extended π-conjugated organic material is used as the negative electrode active material for potassium-ion batteries.

[0027] Furthermore, the low-disorder extended π-conjugated organic material of this application is the disordered tetraaminopyrazine tetraketone organic electrode material, denoted as L-TAPT.

[0028] Furthermore, the dimethyl sulfoxide in this application has a purity of ≥99.9%.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] 1. This application uses commercially available tetraaminobenzoquinone (TABQ) as the synthetic monomer to obtain highly crystalline tetraaminopyrazine tetraketone (TAPT) through self-polymerization. After disordering treatment, a low-disorder extended π-conjugated organic material is finally obtained, namely, disordered tetraaminopyrazine tetraketone (L-TAPT) organic electrode material. The obtained disordered tetraaminopyrazine tetraketone (L-TAPT) organic electrode material has a more open molecular structure, exposing a large number of active sites that participate in redox reactions. Furthermore, it facilitates the migration of potassium ions between molecules. The disordered structure makes the molecular forces between the matrix more complex, further enhancing the chemical stability of the material and solving the problem of simultaneously improving the capacity, cycle stability, and ionic conductivity of organic electrode materials.

[0031] 2. The preparation method described in this application features low raw material cost, simple process, high yield, and significant improvement effect, making it suitable for large-scale production and application. This method provides a practical strategy for optimizing organic materials, demonstrating significant scientific value and practical application prospects in improving the energy density and cycle life of highly crystalline organic electrode materials. Given the demand for superior performance and high reliability in novel high-efficiency energy storage devices, this organic electrode material, which combines high energy, high ionic conductivity, and durability, exhibits promising application potential. Attached Figure Description

[0032] Figure 1 is a comparison of the X-ray diffraction patterns of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material prepared in Example 1. In the figure, 2θ refers to the diffraction angle.

[0033] Figure 2 is a comparison of the infrared spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material prepared in Example 1.

[0034] Figure 3 is a comparison of the Raman spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material prepared in Example 1.

[0035] Figure 4 is a thermogravimetric comparison diagram of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material prepared in Example 1.

[0036] Figure 5 is a comparison of the electron paramagnetic energy spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material prepared in Example 1.

[0037] Figure 6 is a molecular structure diagram of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material prepared in Example 1.

[0038] Figure 7 is a comparison of the charge-discharge curves of two coin cells assembled from the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) material in Example 2 at 100 mA / g.

[0039] Figure 8 is a comparison of the charge-discharge curves of two coin cells assembled from the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) material in Example 2 at 2000 mA / g.

[0040] Figure 9 is a comparison of two coin cells assembled from the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) material in Example 2, respectively, under long-term cycling at 2000 mA / g. Detailed Implementation

[0041] To better understand the technical content of this application, specific embodiments are provided below to further illustrate this application.

[0042] Unless otherwise specified, the experimental methods used in the embodiments of this application are all conventional methods.

[0043] Unless otherwise specified, all materials and reagents used in the embodiments of this application are commercially available.

[0044] Example 1

[0045] A method for preparing a low-disorder extended π-conjugated organic material includes the following steps:

[0046] (1) Add 840 mg of tetraaminobenzoquinone to 50 mL of 0.4 mol / L hydrochloric acid solution and sonicate for 15 min to fully disperse, resulting in a reddish-brown turbid liquid;

[0047] (2) Transfer the obtained reddish-brown turbid liquid to a double-necked flask, and then add 3.28g of sodium acetate to the reddish-brown turbid liquid to react and obtain a blackish-red turbid liquid;

[0048] (3) Transfer the obtained dark red turbid liquid to an oil bath, introduce flowing oxygen at a flow rate of 10 mL / min into a double-necked flask, and then heat and stir the dark red turbid liquid at 85°C for 5 hours to obtain a dark green precipitate.

[0049] (4) The obtained dark green precipitate was washed and filtered with deionized water and dried under vacuum at 80°C to obtain dark green powder.

[0050] (5) The obtained dark green powder was added to 100 mL of dimethyl sulfoxide and reacted to obtain a dark green turbid liquid;

[0051] (6) The dark green turbid liquid was transferred to a high-temperature oven at 100°C and heated and allowed to stand for 12 hours. After washing and filtering with ethanol, it was dried in a vacuum environment at 80°C to obtain a dark green powder of low disordered extended π-conjugated organic material, which is disordered tetraaminopyrazine tetraone (L-TAPT) organic electrode material.

[0052] The dark green powder obtained according to steps (1) to (4) above is a highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material.

[0053] The performance of the prepared disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material was analyzed, and the results are as follows:

[0054] As shown in Figure 1, a comparison of the X-ray diffraction patterns of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material synthesized in this application with that of the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material reveals that, except for the strong π peak near 28.1°, the peaks at other positions are significantly weaker than those of TAPT. This indicates that L-TAPT has a low degree of disordered structure.

[0055] As shown in Figure 2, a comparison of the infrared spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material synthesized in this application reveals that the peak positions of the two materials did not change significantly, indicating that L-TAPT retains the functional group characteristics of highly crystalline TAPT. However, at 3400 cm⁻¹, the peak positions of the two materials did not change significantly. -1 Near the NH group, L-TAPT exhibits a broader peak, indicating more complex hydrogen bonding between molecules.

[0056] As shown in Figure 3, a comparison of the Raman spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material synthesized in this application and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material shows that the Raman spectra of the two are basically the same, both exhibiting high ID / IG values, indicating that both have two-dimensional structures.

[0057] As shown in Figure 4, a thermogravimetric analysis of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material synthesized in this application and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material shows that, due to its low disordered structure, L-TAPT has a low molecular arrangement regularity and is therefore more easily decomposed than TAPT in high-temperature testing.

[0058] As shown in Figure 5, a comparison of the electron paramagnetic energy spectra of the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material synthesized in this application and the highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material reveals that L-TAPT exhibits a weaker Gaussian signal in its electron paramagnetic energy spectrum, indicating a lower free radical content. This results in higher electrochemical stability, fewer side reactions, better reversibility, and more uniform electron transport, thereby improving the overall performance of the material in the battery.

[0059] Figure 6 shows the molecular structure of the disordered tetraaminopyrazine tetraone (L-TAPT) synthesized in this application, which has a high density of active sites.

[0060] Example 2

[0061] The disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material obtained in Example 1 above was used to assemble a coin-type potassium-ion battery with a potassium metal electrode sheet, as detailed below:

[0062] The disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material prepared in Example 1 of this application is used as the negative electrode active material for potassium-ion batteries, conductive carbon black as a conductive agent, and carboxymethyl cellulose as a binder. The mass ratio of the potassium-ion battery negative electrode active material, conductive agent, and binder is 5:4:1. These are mixed in this ratio and then deionized water is added to form a slurry, which is then uniformly coated onto copper foil. The electrode sheet is fabricated by stamping the copper foil into a circular sheet with a diameter of 10 mm. The mass loading of the stamped electrode sheet is 1-2 mg / cm². 2 The CR2016 coin cell was assembled in an argon-filled glove box. Potassium metal sheets and glass fiber filter paper (GF / F) served as the counter electrode and separator, respectively. The potassium ion electrolyte was potassium bis(fluorosulfonyl)imide dissolved in ethylene carbonate (EC) and ethyl methyl carbonate (EMC) (volume ratio 1:1) at a concentration of 5 mol / L.

[0063] Similarly, following the above method, highly ordered tetraaminopyrazinetetraone (TAPT) organic electrode material was assembled with potassium metal electrode sheets to form coin-type potassium-ion batteries. The performance of the two types of coin-type potassium-ion batteries was then measured, and the results are as follows:

[0064] Figure 7 shows a comparison of the charge-discharge curves of the two coin-type potassium-ion batteries at a low current density of 100 mA / g. Compared with highly ordered tetraaminopyrazinetetraone (TAPT), the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material exhibits a higher discharge specific capacity of approximately 574 mAh / g, while TAPT is only 437 mAh / g. Furthermore, the former also shows a more obvious charge-discharge plateau, indicating that the active site utilization rate of L-TAPT is significantly higher than that of TAPT.

[0065] Figure 8 shows a comparison of the charge-discharge curves of two coin-type potassium-ion batteries at a high current density of 2000 mA / g. Compared with highly ordered tetraaminopyrazinetetraone (TAPT), the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material exhibits lower polarization. Even under high current testing, it can still maintain the shape of the charge-discharge curve, indicating that it has better ionic conductivity.

[0066] Figure 9 shows a comparison of the two coin-type potassium-ion batteries under a high current density of 2000 mA / g over long cycles: Compared with highly ordered tetraaminopyrazinetetraone (TAPT), the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material has a reversible specific capacity of 302.2 mAh / g after 200 charge-discharge cycles, while TAPT has a capacity of only 175.4 mAh / g. After disordering treatment, the capacity of TAPT is increased by 72%.

[0067] The above results demonstrate that the disordered tetraaminopyrazinetetraone (L-TAPT) organic electrode material prepared in this application, due to its disordered molecular structure, exposes more active sites. The more open framework model shortens the diffusion distance of potassium ions and also endows it with more complex intermolecular forces, solving the difficulty of simultaneously improving capacity, ionic conductivity, and cycle stability in highly crystalline, i.e., highly ordered organic electrode materials. This method for preparing low-disordered extended π-conjugated organic materials is low-cost, simple, has high yield, and significant optimization effects, making it suitable for large-scale production. This method provides a feasible strategy for optimizing organic electrode materials and has important application prospects in improving energy density and cycle life. Under the demand for high-performance energy storage, this material, with its high energy density, high ionic conductivity, and excellent durability, shows broad potential.

[0068] Example 3

[0069] A method for preparing a low-disorder extended π-conjugated organic material includes the following steps:

[0070] (1) Add 800 mg of tetraaminobenzoquinone to 45 mL of 0.5 mol / L hydrochloric acid solution and sonicate for 15 min to fully disperse, resulting in a reddish-brown turbid liquid;

[0071] (2) Transfer the obtained reddish-brown turbid liquid to a double-necked flask, and then add 3.4g of sodium acetate to the reddish-brown turbid liquid to react and obtain a blackish-red turbid liquid;

[0072] (3) Transfer the obtained dark red turbid liquid to an oil bath, introduce flowing oxygen at a flow rate of 10 mL / min into a double-necked flask, and then heat and stir the dark red turbid liquid at 85°C for 5 hours to obtain a dark green precipitate.

[0073] (4) The obtained dark green precipitate was washed and filtered with deionized water and dried under vacuum at 80°C to obtain dark green powder.

[0074] (5) The obtained dark green powder was added to 80 mL of dimethyl sulfoxide and reacted to obtain a dark green turbid liquid;

[0075] (6) The dark green turbid liquid was transferred to a high-temperature oven at 100°C and heated and allowed to stand for 12 hours. After washing and filtering with ethanol, it was dried in a vacuum environment at 80°C to obtain a dark green powder of low disordered extended π-conjugated organic material, which is disordered tetraaminopyrazine tetraone (L-TAPT) organic electrode material.

[0076] Example 4

[0077] A method for preparing a low-disorder extended π-conjugated organic material includes the following steps:

[0078] (1) Add 880 mg of tetraaminobenzoquinone to 50 mL of 0.4 mol / L hydrochloric acid solution and sonicate for 15 min to disperse it fully, resulting in a reddish-brown turbid liquid;

[0079] (2) Transfer the obtained reddish-brown turbid liquid to a double-necked flask, and then add 3.5g of sodium acetate to the reddish-brown turbid liquid to react and obtain a blackish-red turbid liquid;

[0080] (3) Transfer the obtained dark red turbid liquid to an oil bath, introduce flowing oxygen at a flow rate of 15 mL / min into a double-necked flask, and then heat and stir the dark red turbid liquid at 85°C for 5 hours to obtain a dark green precipitate.

[0081] (4) The obtained dark green precipitate was washed and filtered with deionized water and dried under vacuum at 80°C to obtain dark green powder.

[0082] (5) The obtained dark green powder was added to 100 mL of dimethyl sulfoxide and reacted to obtain a dark green turbid liquid;

[0083] (6) The dark green turbid liquid was transferred to a high-temperature oven at 100°C and heated and allowed to stand for 12 hours. After washing and filtering with ethanol, it was dried in a vacuum environment at 80°C to obtain a dark green powder of low disordered extended π-conjugated organic material, which is disordered tetraaminopyrazine tetraone (L-TAPT) organic electrode material.

[0084] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for preparing a low-disorder extended π-conjugated organic material, characterized in that, Includes the following steps: (1) Tetraaminobenzoquinone was added to hydrochloric acid solution and dispersed by ultrasonication to obtain turbid liquid I; (2) Transfer the obtained turbid liquid I to a reaction vessel, add sodium acetate to react, and obtain turbid liquid II; (3) Transfer the obtained turbid liquid II to an oil bath, introduce flowing oxygen into the reaction vessel, and then heat and stir the turbid liquid II to obtain a precipitate. (4) The precipitate was washed and filtered with deionized water and then dried under vacuum to obtain powder; (5) The obtained powder was added to dimethyl sulfoxide to react and a turbid liquid III was obtained; (6) The resulting turbid liquid III was transferred to a high-temperature blower box, heated and allowed to stand, then washed and filtered with ethanol, and then dried under vacuum to obtain the low disordered extended π conjugated organic material.

2. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, In step (1), the ultrasonic dispersion time is 14-20 min.

3. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, The concentration of the hydrochloric acid solution is 0.3-0.6 mol / L; the ratio of tetraaminobenzoquinone to hydrochloric acid solution is 780-880 mg: 40-60 mL.

4. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, The ratio of tetraaminobenzoquinone to sodium acetate is 780-880 mg: 3.2-3.4 g.

5. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, In step (3), the flow rate of the flowing oxygen is 10 mL / min; the temperature of the heating and stirring treatment is 80-90℃ and the heating time is 4-6 h.

6. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, In step (4), the temperature of vacuum drying is 70-90℃.

7. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, The ratio of tetraaminobenzoquinone to dimethyl sulfoxide is 780-880 mg: 80-120 mL.

8. The method for preparing the low-disorder extended π-conjugated organic material according to claim 1, characterized in that, In step (6), the heating and settling process involves heating to 90-120°C and then settling for 10-14 hours; the vacuum drying temperature is 70-90°C.

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