Multilayer polymer composite for encapsulating quantum dots
一种复合物、聚合物的技术,应用在发光材料、化学仪器和方法等方向,能够解决QD易受光氧化反应影响等问题
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[0024] Example sample preparation
[0025]All samples were prepared by laminating the resin formulation between two i-Component PET barrier films. Approximately 4 g of resin was dispensed on the bottom film and the top was coated with a gap coater rod at the gap setting (10 mils) based on the desired film thickness. The samples were cured in a Fusion UV F300S curing system under UVA at 400 mJ / cm2. The photoluminescence quantum yield (PLQY), peak emission wavelength (PWL) and full width at half maximum (FWHM) of the emission peaks were measured on a 0.1 inch (2.54 mm) square with a Hamamatsu C9920-02G integrating sphere with an excitation wavelength of 450 nm ).
example 1
[0027] Formulation (amount is in weight %)
[0028]
[0029] Dymax BR 641D is Polybutadiene Acrylic Urethane
[0030] Tinuvin 123, 5060, 5100 contain bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate
[0031] result
[0032] quantum yield
[0033]
[0034] The results show that the complex containing bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate has green and red peak positions at shorter wavelengths. This indicates that the quantum dots are better dispersed within the composite.
example 2
[0036] [1] Formulation (amount is in % by weight)
[0037]
[0038] KRATON G1652 is a SEBS triblock copolymer containing 28-30% polymerized styrene, used here as a thickener
[0039] [2] Results
[0040]
[0041]
[0042] The results show that the complexes containing bis-(1-alkoxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacic acid Ester complexes have shorter wavelength red peak positions.
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