9 results about "Acridine derivatives" patented technology

The invention discloses an acridine-derived thermally activated delayed fluorescent material and an electroluminescent device thereof, and belongs to the technical field of organic luminescent materials. According to the fluorescent material, any electron withdrawing group is used as a receptor, an acridine derivative is used as a donor, nitrogen atoms of the acridine derivative are directly connected with the receptor, a dihedral angle between an electron donor and the electron receptor is increased, the dihedral angle is kept at an angle close to 90 degrees, meanwhile, the large-rigidity donor structure further reduces intramolecular vibration relaxation, and the fluorescence intensity is improved. In addition, HOMO delocalization can be further realized through side conjugation modification of acridine, so that large antiintersystem crossing rate and radiation decay rate are realized, the luminescence property of molecules is further improved, and the efficiency roll-off is reduced. The material provided by the invention can be used as an active material to be applied to organic electroluminescent devices.

The preparation method comprises the following steps: under the irradiation of visible light, by taking an acridine derivative and 4-acyl substituted Hanss ester as initial raw materials and benzoic acid and potassium carbonate as acidic and alkaline additives respectively, carrying out a reaction on the acridine derivative and the 4-acyl substituted Hanss ester to obtain the visible-light-induced 9-acyl acridine derivative. 9-acridine full-carbon free radicals and acyl free radicals are generated through a single electron transfer process, then free radical-free radical cross coupling is performed to obtain the 9-acyl acridine derivative, and the 9-acyl acridine derivative contains 9-carbamoyl, aryl formyl and alkyl formyl substitution. The method is green, efficient, mild in reaction condition and wide in substrate range, transition metal and stoichiometric oxidizing agents are prevented from being used, and the method is a novel method for synthesizing the 9-acyl acridine derivative.

This invention discloses an acridine-based fluorescent nanofilm, its preparation method, and its application in the fluorescence sensing detection of ethylenediamine, belonging to the field of gas phase sensing materials. The fluorescent nanofilm is prepared by the self-assembly reaction of an aldehyde-modified acridine derivative and calix[4]pyrroletetrahydrazine at the gas-liquid interface via acylhydrazone bonds. By controlling the precursor concentration and reaction time, this invention can achieve precise control of the nanofilm thickness. The prepared nanofilm has excellent self-supporting properties and a uniform porous network structure, effectively suppressing the aggregation-induced quenching effect. When this nanofilm is used as a fluorescent sensing material for the detection of ethylenediamine, it exhibits a ratiometric fluorescence response, with advantages such as fast response speed, rapid recovery, low detection limit, high selectivity, and good stability, which can meet the needs of rapid on-site visualization detection. The preparation method of this invention is simple, the reaction conditions are mild, and no template is required, which has important application prospects in the field of on-site visualization detection of ethylenediamine.

The application belongs to the technical field of plant disease prevention and treatment, and provides application of an acridine derivative in prevention and treatment of plant fungal diseases. The acridine derivative provided by the application has obvious inhibitory activity on main pathogenic fungi of tobacco and rice, and the compounding of the acridine derivative with fluopyram has a synergistic effect, which can significantly improve the activity on tobacco diseases. The application provides a new compound for prevention and treatment of plant fungal diseases.

The invention provides a fused heterocyclic organic light-emitting material with MR-TADF properties and a preparation method and application thereof, and relates to the technical field of photoelectric functional materials. The invention synthesizes a series of fused heterocycle organic fluorescent compound molecules with MR-TADF properties, wherein the fused heterocycle organic fluorescent compound molecules take carbonyl-containing fused heterocycles as electron withdrawing groups and carbazole and acridine derivatives as electron donating groups. The aromatic conjugacy and the emission wavelength of the molecules are adjusted by controlling the substitution positions, the number and the types of electron donating groups. The six different MR-TADF organic fluorescent materials synthesized by the invention have excellent solubility and tunable luminescence property, and can be applied to preparation of organic light emitting diodes by a solution method.

The invention relates to acridine derivatives as well as a preparation method and application thereof, and belongs to the technical field of nitrogen heterocyclic compounds. The acridine derivative is a compound as shown in the specification or a pharmaceutically acceptable salt thereof. R1 is selected from H, a C1-3 alkyl group and a C1-3 alkoxy group; r2 is selected from H, C1-3 alkyl groups and C1-3 alkoxy groups; a is selected from nitrogen heterocycle and derivative groups thereof. According to the acridine derivative provided by the invention, in the aspect of metal corrosion resistance, the corrosion inhibition efficiency can reach more than 80% under the concentration of 0.0625 mmol / L, which is 1.25 times of the corrosion inhibition effect of the existing 1, 2, 3-triazolyl-acridine derivative, and the acridine derivative has an excellent metal corrosion inhibition effect.

The invention discloses an acridine compound, a hole transport material, a perovskite solar cell and a perovskite solar device, and the chemical structural formula of the acridine compound is as shown in the formula I. According to the invention, R1 and R2 with large steric hindrance conjugated structures are introduced on the basis of a basic structure of 9, 10-dihydroacridine, so that the acridine compound has the characteristic of asymmetric steric hindrance; meanwhile, R3 is used as an anchoring group. Therefore, when the acridine compound is applied to solar cell devices such as perovskite solar cells as a hole transport material, asymmetric steric hindrance, molecular aggregation inhibition and multi-dimensional ordered charge transport channel construction are realized by performing steric hindrance modification on the acridine derivative; the efficiency and the stability of the perovskite device can be remarkably improved, and the application is wide.

The invention belongs to the technical field of plant disease prevention and treatment, and provides application of acridine derivatives in prevention and treatment of plant fungal diseases. The acridine derivative provided by the invention has obvious inhibitory activity on main pathogenic fungi of tobacco and rice, and the acridine derivative has a synergistic effect when compounded with fluopyram, so that the activity on tobacco diseases can be obviously improved. The invention provides a novel compound for preventing and treating fungal diseases of plants.

The invention provides a water phase preparation method of a 3-methylquinoxaline-2 (1H)-ketone derivative. An acridine derivative is used as a photocatalyst, tert-butyl peroxybenzoate is used as a methyl source, carbonate is used as alkali, a surfactant aqueous solution with the mass fraction of 2 wt% is used as a solvent, a quinoline-2 (1H)-ketone derivative and tert-butyl peroxybenzoate are made to generate the 3-methylquinoxaline-2 (1H)-ketone derivative in an alkaline aqueous phase in a nitrogen environment, the reaction temperature is room temperature, the reaction time is 1-2 hours, and the 3-methylquinoxaline-2 (1H)-ketone derivative is obtained. The reaction time is 4.5 to 6 hours; the synthesis steps are simple, the reaction conditions are mild, the operation is simple, convenient and feasible, the applicable substrate range is wide, and a new thought is provided for synthesis of the 3-methylquinoxaline-2 (1H)-ketone derivative; and the reaction is carried out in a water phase without adding other organic solvents, so that the catalyst is high in catalytic activity, high in reaction efficiency and few in byproducts, and has a relatively strong industrial application prospect. In addition, the catalyst can be recycled for 3-4 times, and has good stability and sustainability.