Preparation method of electrowetting dye and electrowetting display printing ink
A technology of electrowetting and dyes, applied in ink, organic dyes, optics, etc., can solve the problems of low conversion and utilization of raw materials, and achieve the goal of improving the transfer rate and efficiency of electron exchange, improving quality and yield, and reducing reaction pressure Effect
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Embodiment 1
[0047]Get 0.1g (452g / mol, 0.22mmol) of 3,9-diisobutyl perylenedicarboxylate in a round bottom flask, add 1.63g (298g / mol, 5.5mmol) of 2-octyl dodecanol and heat up to 100°C, add 0.01g (10wt%) dihydroxybutyl tin chloride into the reaction flask, then raise the temperature to 170°C, heat the reaction for 3h, during the reaction, dot tracking. After the reaction, the reactant was cooled to room temperature, and then the temperature was raised to 180° C., and then evaporated under reduced pressure to remove excess 2-octyldodecanol, which served as both the reaction solvent and the reactant, and vacuum-dried. The final product obtained was cooled to room temperature, dissolved in petroleum ether, and purified by a wet silica gel column to obtain a yellow dye.
[0048] The conversion rate was calculated to be 90%.
[0049] Spectral analysis was carried out on the prepared yellow dye, and the results were as follows: figure 1 shown. figure 1 It is the proton nuclear magnetic reson...
Embodiment 2
[0051] Take 1g (452g / mol, 2.2mmol) of 3,9-diisobutyl perylenedicarboxylate in a round bottom flask, add 16.3g (298g / mol, 55mmol) of 2-octyldodecyl alcohol and raise the temperature to 100°C , add 0.1g (10wt%) dihydroxybutyl tin chloride in the reaction flask, then raise the temperature to 170°C, heat the reaction for 3h, and track the reaction with a plate during the reaction. After the reaction, cool the reactant to room temperature, add 100ml of ethanol for recrystallization, raise the temperature to 60°C, freeze and precipitate below 0°C, and separate and extract the upper reaction product. The final product obtained was dissolved in petroleum ether, purified by a wet silica gel column, and dried in vacuum to obtain a yellow dye.
[0052] The calculated conversion rate was 90.5%.
Embodiment 3
[0054] Take 1g (452g / mol, 2.2mmol) of 3,9-diisobutyl perylenedicarboxylate in a round bottom flask, add 16.3g (298g / mol, 55mmol) of 2-octyldodecyl alcohol and raise the temperature to 100°C , add 0.2g (20wt%) dihydroxybutyl tin chloride in the reaction flask, then raise the temperature to 170°C, heat the reaction for 3h, and track the reaction with a plate during the reaction. After the reaction, cool the reactant to room temperature, add 100ml of ethanol for recrystallization, raise the temperature to 60°C, freeze and precipitate below 0°C, and separate and extract the upper reaction product. The final product obtained was dissolved in petroleum ether, purified by a wet silica gel column, and dried in vacuum to obtain a yellow dye.
[0055] The calculated conversion rate was 91.5%.
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