11 results about "Diaminomaleonitrile" patented technology

The invention discloses a diaminomaleonitrile derivative, a non-aqueous electrolyte thereof and a sodium ion battery. The structural formula of the diaminomaleonitrile derivative disclosed by the invention is shown as a formula I, and R1, R2, R3 and R4 are respectively and independently selected from one of-SO2F and-CH2CH2SO2F. The diaminomaleonitrile derivative has cyano (-CN), sulfonyl fluoride (-SO2F) and carbon-carbon double-bond functional groups, the functional groups have a synergistic effect, a stable CEI film can be formed on a positive electrode, the contained sulfonyl fluoride group can adjust charge distribution while enhancing the oxidation resistance of molecules, the functions of optimizing an ion transmission path and the like are achieved, and the service life of the battery is prolonged. Therefore, the high-voltage resistance of the battery is improved. Formula 1.

The invention relates to a multi-site COF-COF adsorbent as well as a preparation method and application thereof, and belongs to the technical field of composite adsorption materials. According to the invention, pyrogallol and diaminomaleonitrile are used to construct a primary COF skeleton, the primary COF skeleton is expanded by 2, 5-dithiourea to prepare the multi-site COF-COF adsorbent DPDA, and the structural formula of the multi-site COF-COF adsorbent DPDA is shown in the specification; the multi-site COF-COF adsorbent disclosed by the invention can be used for efficiently and selectively adsorbing gallium ions from a solution, and the multi-site COF-COF adsorbent has relatively high cyclic regeneration capacity.

This invention relates to a method for preparing trinitromethyl tricyclic compounds containing nitrogen-rich groups, belonging to the field of energetic materials technology. The specific preparation steps are as follows: Scheme 1 uses 2,3-diaminomaleonitrile to obtain the corresponding methyl ester-substituted intermediate through multiple steps of cyclization, acidification, and esterification. Then, through multiple steps of hydrazine substitution, cyclization with ethyl 3-ethoxy-3-iminopropionate hydrochloride, ester hydrolysis, and nitration, the target compound trinitromethyl tricyclic compound 2 is successfully synthesized. Scheme 2 uses ethyl diazonium acetate to obtain the corresponding methyl ester-substituted intermediate through multiple steps of cyclization, acidification, and esterification. Then, through multiple steps of hydrazine substitution, cyclization with ethyl 3-ethoxy-3-iminopropionate hydrochloride, nitration, salt formation, and renitration, the target compounds trinitromethyl tricyclic compounds 1, 3, and 4 are synthesized. The target compound has advantages such as high nitrogen content, high density, good thermal stability and excellent detonation performance, and can be used as a component of energetic materials, showing potential application value.

This invention belongs to the field of fluorescent probes and discloses a probe that can simultaneously respond to ClO ‑ Tetraphenylethylene-thiophene hybrid fluorescent probes with varying viscosity and their preparation methods and applications. The probes utilize a tetraphenylethylene-aromatic ring hybrid structure as the chromophore, with dinitrile isophorone and diaminomaleitrile as ClO₂ groups, respectively. ‑ Based on the recognition group, fluorescent probe molecules were designed and synthesized, with the following general structural formula: This type of fluorescent probe is effective against ClO₂. ‑ It exhibits rapid response, high specificity, and high sensitivity, with a strong responsiveness to viscosity, and can simultaneously detect ClO. ‑ Changes in viscosity levels and the environment provide new insights and potential detection tools for the early diagnosis of atherosclerosis.

The application belongs to the technical field of high polymer materials, and discloses a trifunctional imidazole dicyan, a wave-absorbing composite material and a preparation method and application thereof. First, a first intermediate is prepared by taking trichlorazizine and a hydroxy aldehyde compound as raw materials; then, a second intermediate is prepared by taking the first intermediate and a diamino maleonitrile as raw materials; and finally, a trifunctional imidazole dicyan is prepared by performing a ring closing reaction on the second intermediate. The trifunctional imidazole dicyan prepared by the application has excellent carbon nanotube dispersibility and stability and ion coordination, and can be used for preparing a wave-absorbing material. The wave-absorbing material prepared by the application has low reflection loss and very thin thickness, and thus is expected to become a new generation of wave-absorbing material.

This invention discloses a fluorescent probe for detecting hypochlorite based on the synergistic effect of ESIPT and AIE in a benzothiazole structure, its preparation method, and its application, belonging to the field of fluorescent probe technology. The invention uses 2-aminobenzylthiophenol and 2-hydroxy-5-methoxybenzaldehyde as starting materials, condensing them to form a benzothiazole derivative as the fluorescent core. A diaminomaleitrile recognition group is introduced through an aldehyde-amine condensation reaction to synthesize the fluorescent probe. After the probe undergoes a specific oxidation reaction with hypochlorite, the C=N double bond breaks, and the ESIPT and AIE effects are synergistically activated, resulting in a significant enhancement of fluorescence. This probe exhibits a fast response, a linear range of 0-200 μM, a detection limit of 29.1 nM, excellent selectivity and anti-interference properties, and stability under pH 6-10 conditions, making it suitable for highly sensitive detection of hypochlorite in aqueous solutions and complex systems.

The utility model discloses a purification system for a primary crude product of diaminomaleonitrile, which relates to the technical field of purification and comprises a crude product crystallizing tank, an automatic multifunctional filter press, a solvent tank, a washing water temporary storage tank, a crude product dryer and a dust removal condensing system, a liquid inlet of the crude product crystallizing tank is communicated with a liquid outlet of the diaminomaleonitrile reaction system, a liquid outlet of the crude product crystallizing tank is communicated with a feeding hole of the automatic multifunctional filter press, a liquid inlet of the solvent tank is communicated with the solvent tank area through a pipeline, a liquid outlet of the solvent tank is communicated with a feeding hole of the automatic multifunctional filter press, and a liquid outlet of the automatic multifunctional filter press is communicated with a liquid outlet of the crude product crystallizing tank. A liquid outlet of the automatic multifunctional filter press is communicated with a liquid inlet of the washing water temporary storage tank; a discharge hole of the automatic multifunctional filter press is communicated with the crude product dryer; and an air outlet of the crude product dryer is communicated with the dust removal condensation system. The device is reasonable in design, simplifies equipment, reduces operation procedures, improves the operation automation level, and has the advantages of energy conservation and environmental protection.

The utility model discloses a system for purifying a diamino maleic dinitrile crude product, which relates to the technical field of purification and comprises a crystallization centrifugal component, an impurity removal centrifugal component and a crude product dryer, the impurity removal centrifugal assembly comprises a reflux impurity removal kettle communicated with a discharge hole of the first centrifugal machine, a second centrifugal machine communicated with a material outlet of the reflux impurity removal kettle, a reflux condenser communicated with an air outlet of the reflux impurity removal kettle, and an impurity removal solvent metering tank respectively communicated with the second centrifugal machine and the reflux impurity removal kettle; the impurity removal solvent temporary storage tank is communicated with a liquid outlet of the second centrifugal machine; and the crude product dryer is communicated with a discharge hole of the second centrifugal machine. The hydrocyanic acid low-polymer impurity removal device is compact and reasonable in design, can effectively remove hydrocyanic acid low-polymer impurities, simplifies equipment, reduces operation procedures, improves operation automation level, and reduces material loss.

The invention belongs to the field of adsorption materials, and particularly relates to amidoximation beta-cyclodextrin-based aerogel and a preparation method thereof. The method comprises the following steps: 1) preparing beta-cyclodextrin into an organic stock solution, adding triethylamine and methacrylic anhydride, and performing low-temperature reaction to obtain an intermediate A; 2) preparing hydroxylamine hydrochloride into a reaction base solution, adjusting the reaction base solution to be neutral or alkalescent, adding diaminomaleonitrile, and performing thermal stirring reaction to obtain an intermediate B; and 3) dissolving the intermediate A and a thermal radical initiator in a solvent, then adding the intermediate B, and carrying out a thermal stirring reaction to obtain the amidoximation beta-cyclodextrin-based aerogel. The amidoximation beta-cyclodextrin-based aerogel constructed by the invention has very excellent printing and dyeing wastewater treatment capacity, can effectively and deeply purify RhB in the printing and dyeing wastewater, has very high adsorption capacity and excellent cyclic regeneration performance, and has very high industrial value.

The present application relates to the field of photocatalyst, discloses a carbon and nitrogen coated transition metal cluster photocatalyst and its preparation method and application, the method comprises the following steps: in the presence of organic solvent, mixing transition metal nitrate and diamino maleonitrile, then the mixture is hydrothermally reacted to obtain a solid product; the transition metal nitrate is selected from at least one of cobalt nitrate, iron nitate and copper nitrate; the molar ratio of transition metal nitrate and diamino maleonitrile is 1:1-3; the hydrothermal reaction conditions include: temperature is 120-140 DEG C, time is 8-15h; under the protection of inert gas, the solid product is calcined, and then the calcined product is pickled; the calcination conditions include: the temperature rising rate is 3-10 DEG C / min, the temperature is 450-700 DEG C, and the time is 1-4h. The photocatalyst obtained by the method can catalyze the production of hydrogen peroxide and catalyze 1,5-dihydroxynaphthalene oxidation to produce juglone, and the yield of the product is higher.

The invention relates to the technical field of novel biological adsorption materials, in particular to amidoxime functional Arabic gum as well as a preparation method and application thereof. The preparation method comprises the following steps: taking epichlorohydrin and diethylenetriamine as cross-linking agents, and introducing an amidoxime functional group on a skeleton of Arabic gum through the synergistic effect of diaminomaleonitrile and hydroxylamine hydrochloride to prepare the amidoxime functional Arabic gum. The amidoxime functionalized Arabic gum provided by the invention is simple, convenient, efficient, green and low in cost, is applied to the field of environmental governance, and particularly has remarkable advantages in treatment and purification of water pollution.