Nano red light conversion agent special for agricultural film and preparation thereof
A technology of light conversion agent and red light, which is applied in the field of core-shell structure nano-red light conversion agent, which can solve the problems of reducing the light transmittance of the film, affecting the light transmittance of the film, and reducing the light transmittance of the film.
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Embodiment 1
[0012] Take the red light conversion agent Eu 0.7 Tb 0.3 (TTA) 3 Phen0.6g, 0.6mmol was dissolved in 50ml dimethyl sulfoxide to obtain solution A; take 0.1g nano-SiO 2 (20nm-30nm), ultrasonically disperse in 50ml ethanol, adjust the pH value of the system to be weakly alkaline at 8.0-12.0, and obtain nano-dispersion system B. (2) In the state of stirring, add solution A dropwise to nano-dispersion system B, continue to stir, and gradually get white turbidity, let it stand for 30-90 minutes, and centrifuge to obtain white solid powder, that is, core-shell red light nanometer Light converting agent SiO 2 @Eu 0.7 Tb 0.3 (TTA) 3 Phen.
Embodiment 2
[0014] Take the red light conversion agent Eu 0.5 Y 0.5 (TTA) 3 Dissolve Phen0.6g, 0.6mmol in 50ml of acetone to obtain solution A; take 0.3g of nano-MgO (20nm-30nm), ultrasonically disperse it in 50ml of n-propanol, and adjust the pH of the system to a weak alkalinity of 8.0-12.0 to obtain a nano-dispersion system b. (2) In the state of stirring, add the solution A dropwise to the nano-dispersion system B, continue to stir, and gradually get white turbidity, let it stand for 30-90 minutes, and centrifuge to obtain a white solid powder, which is the core-shell red light nanometer Light converting agent MgO@Eu 0.5 Y 0.5 (TTA) 3 Phen.
Embodiment 3
[0016] Take the red light conversion agent Eu 0.5 Dy 0.5 (TTA) 3 Phen0.6g, 0.6mmol was dissolved in 50ml N, N-dimethylformamide to obtain solution A, which was subjected to oxygen removal treatment; 0.6g nanometer Cu 2 o 2 (20nm-30nm), ultrasonically disperse in 50ml n-propanol under nitrogen atmosphere, adjust the pH of the system to be weakly alkaline at 8.0-12.0, and obtain nano-dispersion system B. (2) While stirring, under nitrogen protection, add solution A dropwise to nano-dispersion system B, continue to stir, and gradually get white turbidity, let it stand for 30-90 minutes, and centrifuge to obtain white solid powder, which is the core-shell type Red light nano light transfer agent Cu 2 o 2 @Eu 0.5 Dy 0.5 (TTA) 3 Phen.
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