A kind of tricolor block copolymer type white light phosphor and preparation method thereof
A technology of block copolymers and three primary colors, applied in chemical instruments and methods, luminescent materials, sustainable buildings, etc., can solve the problems of difficult separation and removal of metal catalysts, affecting luminous efficiency, destroying complex structures, etc., achieving LED The chip process is convenient to manufacture, avoids phase separation, and enhances the fluorescence intensity.
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Embodiment 1
[0036] 1. Preparation of europium red light complex Eu(TTA) 3 (MAA)
[0037]Add 10 mL of 0.2 mol / L ethanol solution of 2-thienoyltrifluoroacetone into the reaction vessel, drop 5 mL of 0.2 mol / L europium chloride ethanol solution at a rate of 1 mL / min, adjust the pH value of the solution to 4-5, and heat Stir and react at 55°C for 30 minutes, then add 5 mL of 0.2 mol / L o-phenanthroline ethanol solution dropwise at a rate of 1 mL / min, and finally add 5 mL of 0.2 mol / L ethanol solution of methacrylic acid dropwise at a rate of 1 mL / min, Adjust the pH value of the solution to 6.5-7.0, continue to react for 180 min while stirring, and stop heating. Suction filtration, the filter cake was washed with absolute ethanol to remove unreacted ligands, and dried in a vacuum oven to obtain the europium red complex Eu(C 8 h 5 f 3 o 2 S) 2 (C 12 h 8 N 2 )(C 4 h 5 o 2 ) 0.7118g, yield 65%.
[0038] 2. Preparation of terbium green light complex Tb(p-ABA) 3 MAA
[0039] Add 15 mL...
Embodiment 2
[0050] 1. The preparation of europium red light complex and beryllium blue light complex is the same as in Example 1.
[0051] 2. Preparation of terbium green light complex Tb(o-ABA) 3 MAA
[0052] Add 15 mL of 0.2 mol / L ethanol solution of anthranilic acid and 5 mL of 0.2 mol / L ethanol solution of methacrylic acid into the reaction vessel, adjust the pH value to 5.5-6.5 with sodium alkoxide, heat to 55°C and stir for 10 min, then add 1 mL Add 5 mL of 0.2 mol / L terbium chloride ethanol solution at a drop rate of 1 / min, adjust the pH value with sodium alkoxide to keep it in a coordination environment of 5.5-6.5, continue the reaction for 180 min, and stop heating. Suction filtration, the filter cake was washed with absolute ethanol to remove unreacted ligands, and placed in a vacuum oven to dry to obtain the terbium green light complex Tb(C 7 h 6 NO 2 ) 3 (C 4 h 5 o 2 ) 0.5312g, yield 61%.
[0053] 3. Preparation of red, green and blue tri-color tri-block copolymer whi...
Embodiment 3
[0059] 1. The preparation of terbium green light complex and beryllium blue light complex is the same as in Example 1.
[0060] 2. Preparation of europium red light complexes
[0061] Add 10 mL of 0.2 mol / L ethanol solution of 2,4-hexanedione into the reaction vessel, drop 5 mL of 0.2 mol / L europium chloride ethanol solution at a rate of 1 mL / min, adjust the pH value of the solution to 4-5, and heat to Stir and react at 55°C for 30min, then add 5mL of 0.2mol / L ethanol solution of phenanthroline dropwise at a rate of 1mL / min, and finally add 5mL of ethanol solution of 0.2mol / L methacrylic acid dropwise at a rate of 1mL / min. The pH value of the solution was 6.5-7.0, and the reaction was continued for 180 minutes under stirring, and the heating was stopped. Suction filtration, the filter cake was washed with absolute ethanol to remove unreacted ligands, and dried in a vacuum oven to obtain the europium red complex Eu(C 8 h 10 o 2 ) 2 (C 12 h 8 N 2 )(C 4 h 5 o 2 ) 0.4834g...
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