A kind of fluorine-substituted 9,9′-bianthracene blue light host material and its application
A blue-light host material, the technology of bianthracene, which is applied in the field of fluorine-substituted 9,9′-bianthracene blue-light host materials, and the field of blue-light host materials, can solve the problems of poor performance of blue light devices, difficulties in phosphorescent blue light devices, and difficulty in achieving high efficiency and good performance. Color purity, long-life blue light devices and other issues, to achieve the effects of low turn-on voltage, good thermal stability, and high fluorescence quantum efficiency
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Embodiment 1
[0031] Example 1: Synthesis of fluorinated 9,9'-bianthracene blue light material 1:
[0032]
[0033] Under nitrogen atmosphere, to 30mLTHF and 10mL, 2.0mol·L –1 K 2 CO 3 In the solution, 10,10′-dibromo-9,9′-bianthracene (2.34mmol), 2-fluorophenylboronic acid (8mmol) and Pd(PPh 3 ) 4 (0.35 mmol). After the reaction, the mixture was heated to reflux for 24h, and the reaction was tracked by point plate. After the reaction is complete, cool down and add water to stop the reaction. Products with CH 2 Cl 2 Extraction, washing the organic phase with brine, anhydrous MgSO 4 It was dried, concentrated by rotary evaporation to remove the solvent, and 1.13 g of light yellow solid 1 was obtained by column chromatography with ethyl acetate and petroleum ether. 1 HNMR (CDCl 3 ,400MHz):δ7.18-7.26(m,10H),7.27-7.30(m,4H),7.37-7.51(m,4H),7.60-7.68(m,4H),7.78-7.82(d,J= 8.8Hz, 4H).
Embodiment 2
[0034] Example 2: Synthesis of fluorinated 9,9'-bianthracene blue light material 5:
[0035]
[0036] Under nitrogen atmosphere, to 30mLTHF and 10mL, 2.0mol·L –1 K 2 CO 3 In the solution, 10,10′-dibromo-9,9′-bianthracene (2.34mmol), 2,4-difluorophenylboronic acid (8mmol) and Pd(PPh 3 ) 4 (0.35 mmol). After the reaction, the mixture was heated to reflux for 24h, and the reaction was tracked by point plate. After the reaction is complete, cool down and add water to stop the reaction. Products with CH 2 Cl 2 Extraction, washing the organic phase with brine, anhydrous MgSO 4 It was dried, concentrated by rotary evaporation to remove the solvent, and 1.22 g of light yellow solid 5 was obtained by column chromatography with ethyl acetate and petroleum ether. 1 HNMR (CDCl 3 ,400MHz): δ7.17-7.23(m,12H),7.38-7.41(m,4H),7.53-7.61(q,4H),7.74-7.61(d,J=8.0Hz,4H).
Embodiment 3
[0037] Example 3: Synthesis of fluorinated 9,9'-bianthracene blue light material 13:
[0038]
[0039] Under nitrogen atmosphere, to 30mLTHF and 10mL, 2.0mol·L –1 K 2 CO 3 In the solution, 10,10′-dibromo-9,9′-bianthracene (2.34mmol), 2,3,4tri-fluorophenylboronic acid (8mmol) and Pd(PPh 3 ) 4 (0.35 mmol). After the reaction, the mixture was heated to reflux for 24h, and the reaction was tracked by point plate. After the reaction is complete, cool down and add water to stop the reaction. Products with CH 2 Cl 2 Extraction, washing the organic phase with brine, anhydrous MgSO 4 It was dried, concentrated by rotary evaporation to remove the solvent, and 1.38 g of white solid 13 was obtained by column chromatography with ethyl acetate and petroleum ether. 1 HNMR (CDCl 3 ,400MHz): δ7.18-7.20(m,8H),7.27-7.31(t,4H),7.38-7.43(m,4H),7.73-7.78(d,J=8.8Hz,4H).
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