Application of 2,5-diamino-1,4-benzenedithiophene dihydrochloride_Kain Industrial Additive

Background and overview^[1][2]

2,5-Diamino-1,4-benzenedithiophene dihydrochloride can be used as an organic solvent and as an intermediate in organic synthesis. If 2,5-diamino-1,4-benzenedithiophene dihydrochloride is inhaled, move the patient to fresh air; if skin contact occurs, remove contaminated clothing and wash the skin thoroughly with soap and water. If you feel any discomfort, seek medical attention; if contact with eyes occurs, separate eyelids, rinse with running water or saline, and seek medical attention immediately; if ingested, rinse mouth immediately, do not induce vomiting, and seek medical attention immediately.

Apply^[1][2]

2,5-Diamino-1,4-benzenedithiophene dihydrochloride can be used as an organic solvent and as an intermediate in organic synthesis. Examples of its application are as follows:

1) To prepare an electrical storage device based on one-dimensional organic-inorganic hybrid polymer chain, add a divalent metal aqueous solution dropwise to the deoxygenated 2,5-diamino-1,4-phenylenedithiophene in the hydrochloride organic solution, and then adjust the pH value of the system to 7; then stir and react at room temperature for 6 hours to prepare an organic-inorganic hybrid polymer; dissolve the organic-inorganic hybrid polymer in an organic solvent to prepare an organic-inorganic hybrid Polymer saturated solution; apply the organic-inorganic hybrid polymer solution on the substrate to prepare an organic film layer; then prepare electrodes on the organic film layer to obtain an electrical storage device based on one-dimensional organic-inorganic hybrid polymer chains; with relatively Good high-temperature stability, the organic electrical memory device prepared into a sandwich structure has successfully realized the ternary organic electrical storage behavior, and the device has a low turn-on voltage. The preparation process is simple. By changing the central metal ion, the electrical memory has been successfully improved. Ternary yield of pieces.

2) In an air-filled glove box, add 172mg SnCl 2 dihydrate and 4.00g 2,5-diamino-1,4-phenylenedithiophene dihydrate into a 100mL round-bottomed Schlenk flask equipped with a magnetic stirring rod. Hydrochloride, 4.32g para-aminobenzoic acid, and 27.1 ml methanesulfonic acid. The addition of methanesulfonic acid causes degassing of HCl, which is captured by the sodium carbonate bath. Purge the flask with nitrogen and place it in a hot oil bath at a temperature of 75°C. The oil bath temperature was maintained at 75°C until HCl gas evolution subsided. The temperature of the oil bath was then raised to 165°C and maintained at this temperature for the duration of the reaction. As the temperature of the oil bath increases, a nitrogen flow (2.5L/min) passes through the reaction solution, and this nitrogen flow will be maintained during the reaction. The reaction was allowed to proceed for 10 hours and allowed to cool before taking off the heat. Add water to the cooled reaction, add 4,4′-[1,3]thiazolo[4,5-f][1,3]benzothiazole-2,6-diyldiphenylamine and react with some Intermediates and impurities (8.439 g solid when dried over water). The crude solid was isolated by filtration, resuspended in water, and the solution brought to pH 7 by adding concentrated ammonium hydroxide. The solids were collected again by filtration, they were 4,4′-[1,3]thiazolo[4,5-f][1,3]benzothiazole-2,6-diyldiphenylamine with some reaction intermediates and mixture of impurities. By crystallizing the above neutralized solid in N-methylpyrrolidone, pure 4,4′-[1,3]thiazolo[4,5-f][1,3]benzothiazole-2,6 can be obtained -Diyl diphenylamine.