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首页> 外文期刊>ACS applied materials & interfaces >Robust Infrared-Shielding Coating Films Prepared Using Perhydropolysilazane and Hydrophobized Indium Tin Oxide Nanoparticles with Tuned Surface Plasmon Resonance
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Robust Infrared-Shielding Coating Films Prepared Using Perhydropolysilazane and Hydrophobized Indium Tin Oxide Nanoparticles with Tuned Surface Plasmon Resonance

机译：使用全氢聚硅氮烷和疏水化的铟锡氧化物纳米粒子制备的鲁棒的红外屏蔽涂层膜，其表面等离激元共振

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摘要

Robust infrared (IR)-shielding coating films were prepared by dispersing indium tin oxide (1TO) nanoparticles (NPs) in a silica matrix. Hydrophobized ITO NPs were synthesized via a liquid phase process. The surface plasmon resonance (SPR) absorption of the ITO NPs could be tuned by varying the concentration of Sn doping from 3 to 30 mol %. The shortest SPR wavelength and strongest SPR absorption were obtained for the ITO NPs doped with 10% Sn because they possessed the highest electron carrier density. Coating films composed of a continuous silica matrix homogeneously dispersed with ITO NPs were obtained using perhydropolysilazane (PHPS) as a precursor. PHPS was completely converted to silica by exposure to the vapor from aqueous ammonia at 50 °C. The prepared coating films can efficiently shield IR radiation even though they are more than 80% transparent in the visible range. The coating film with the greatest IR-shielding ability completely blocked IR light at wavelengths longer than 1400 nm. The pencil hardness of this coating film was 9H at a load of 750 g, which is sufficiently robust for applications such as automotive glass.
机译：通过将氧化铟锡（1TO）纳米颗粒（NPs）分散在二氧化硅基质中来制备坚固的红外（IR）屏蔽涂层膜。疏水化的ITO NPs是通过液相法合成的。可以通过将Sn掺杂浓度从3 mol％更改为30 mol％来调整ITO NP的表面等离子体共振（SPR）吸收。对于掺杂了10％Sn的ITO NP，其SPR波长最短，SPR吸收最强，因为它们具有最高的电子载流子密度。使用全氢聚硅氮烷（PHPS）作为前体，获得由均匀分散有ITO NP的连续二氧化硅基质组成的涂膜。通过暴露于50°C的氨水蒸气中，PHPS完全转化为二氧化硅。制备的涂膜即使在可见光范围内透明性超过80％，也可以有效地屏蔽IR辐射。具有最大红外屏蔽能力的涂膜可以完全阻挡波长大于1400 nm的红外光。在750g的负荷下，该涂膜的铅笔硬度为9H，这对于诸如汽车玻璃的应用是足够坚固的。

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