Photocurable composition and application thereof
A composition and light-curing technology, applied in applications, non-polymer organic compound adhesives, optics, etc., can solve problems such as narrow emission spectrum band, poor light absorption performance, and low power
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Embodiment 1
[0169] Embodiment 1: the preparation of formula (1) compound
[0170]
[0171] a) Cross-coupling reaction
[0172] KOAc (29.40g, 0.3mol) and TBAB (32.24g, 0.1mol) were added into a 250mL four-necked flask filled with DMF (100 mL), and after stirring evenly, 3,4-ethylenedioxythiophene (14.24 g, 0.1mol) and 2-acetyl-5-bromothiophene (20.50g, 0.1mol) were sequentially added to the above-mentioned mixed solution, and finally the catalyst Pd(OAc) was added 2 (2.24g, 0.01mol), stirred and reacted at 80°C for 8h. After the reaction, after the temperature of the reaction solution dropped to room temperature, the reaction solution was poured into 50mL CH 2 Cl 2and 50mL of water in a beaker, after the aqueous phase and the organic phase are separated, discard the aqueous phase, wash the organic phase with distilled water 3-5 times, then dry it with anhydrous sodium sulfate overnight and filter, and distill the organic phase under reduced pressure . Finally, column chromatography...
Embodiment 2
[0178] Embodiment 2: the preparation of formula (2) compound
[0179]
[0180] a) Cross-coupling reaction
[0181] 3,4-ethylenedioxythiophene (14.24g, 0.1mol), 2-acetyl-4-methoxy-5-bromothiophene (23.50g, 0.1mol), Pd(PPh 3 ) 4 (11.55g, 0.01mol) and anhydrous K 2 CO 3 (16.59g, 0.12mol) was successively added into a 250mL four-necked round-bottomed flask filled with DMF (100mL), and then the mixture was kept at 80°C with N 2 The reaction was stirred for 8h under protected conditions. After the reaction, after the temperature of the reaction solution dropped to room temperature, the reaction solution was poured into 50mL CH 2 Cl 2 and 50mL of water in a beaker, after the aqueous phase and the organic phase are separated, discard the aqueous phase, wash the organic phase with distilled water 3-5 times, then dry it with anhydrous sodium sulfate overnight and filter, and distill the organic phase under reduced pressure . Finally, column chromatography was used to further ...
Embodiment 3
[0187] Embodiment 3: the preparation of formula (3) compound
[0188]
[0189] a) Cross-coupling reaction
[0190] The cross-coupling reaction in Example 1 was repeated, but replacing 2-acetyl-5-bromothiophene with 2-methoxycarbonyl-5-bromothiophene (22.10 g, 0.1 mol). Finally, a light yellow floc (intermediate product) was obtained, totaling 5.62 g. The intermediate product is 1 The H-NMR spectrum confirmed that it was the compound shown below.
[0191]
[0192] 1 H-NMR (spectrum) (in CDCl 3 Measured in) (δppm): 3.88 (s, 3H), 4.26 (m, 2H), 4.38 (m, 2H), 6.35 (s, 1H), 6.95 (d, 1H), 7.72 (d, 1H).
[0193] b) Acylation reaction
[0194] The intermediate product (2.81 g, 0.01 mol) obtained in the previous step was added to 120 mL of anhydrous CH 2 Cl 2 After stirring evenly, add acetyl chloride (0.86g, 0.011mol), then stir the mixture at room temperature for 30 minutes, then cool the mixture to 0°C, and then add AlCl 3 (1.60 g, 0.012 mol). Afterwards, the reaction...
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