Compounds with AIE characteristic and preparation methods and applications thereof
A compound and characteristic technology, applied in the field of color-changing materials, can solve the problem of limited number of compounds, and achieve the effect of simple synthesis method, high fluorescence quantum yield, and material saving
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[0054] 1. Synthesis of bis(4-benzoyl)aniline
[0055] Take 15.5 mL of anhydrous N,N-dimethylformamide (DMF) in an ice-water bath to below 0 °C, add 15.5 mL of phosphorus oxychloride dropwise, stir at room temperature for 40 min, add 2.0 g of triphenylamine and heat the mixture to 95 °C and stirred for 14 hours. After the reaction was completed, the reactant was cooled to room temperature and poured into ice water, then adjusted to neutral with sodium hydroxide, stirred at room temperature for 2 hours, extracted with dichloromethane, dried over anhydrous magnesium sulfate, concentrated and separated by silica gel column chromatography Obtain white powder, yield: 90%.
[0056] 1 H-NMR(DMSO,400MHz)δ(ppm):9.87(s,2H),7.84(d,4H),7.47(t,2H),7.31(s,1H),7.21(d,2H),7.16( d, 4H).
[0057] 2. Synthesis of compound 1
[0058] Add 1mmol of bis(4-benzoyl)aniline and 2mmol of 4-benzohydrazide into the flask, then add 6ml of ethanol and 1 to 2 drops of glacial acetic acid. The reaction w...
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