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Facile production of smart superhydrophobic nanocomposite for wood coating towards long-lasting glow-in-the-dark photoluminescence
Luminescence ( IF 3.2 ) Pub Date : 2021-08-28 , DOI: 10.1002/bio.4137
Mehrez E El-Naggar 1 , Ali Aldalbahi 2 , Tawfik A Khattab 1 , Mokarram Hossain 3
Affiliation  

A smart photoluminescent nanocomposite surface coating was prepared for simple industrial production of long-persisting phosphorescence and superhydrophobic wood. The photoluminescent nanocomposite coatings were capable of continuing to emit light in the dark for prolonged time periods that could reach 1.5 h. Lanthanide-doped aluminium strontium oxide (LASO) nanoparticles at different ratios were immobilized in polystyrene (PS) and developed as a nanocomposite coating for wood substrates. To produce transparency in the prepared nanocomposite coating, LASO was efficiently dispersed in the form of nanoscaled particles to ensure homogeneous dispersion without agglomeration in the PS matrix. The coated wood showed an absorption band at 374 nm and two emission bands at 434 nm and 518 nm. The luminescence spectra showed both long-persisting phosphorescence as well as photochromic fluorescence relying on the LASO ratio. The improved superhydrophobicity and resistance to scratching of the coated wood could be attributed to the LASO NPs incorporated in the polystyrene matrix. Compared with the uncoated wood substrate, the coated LASO-PS nanocomposite film also displayed photostability and high durability. The current study demonstrated the potential high-scale manufacturing of smart wood for some applications such as safety directional signs in buildings, household products, and smart windows.

中文翻译:

轻松生产用于木器涂料的智能超疏水纳米复合材料,实现长效夜光光致发光

制备了一种智能光致发光纳米复合表面涂层,用于长效磷光和超疏水木材的简单工业生产。光致发光纳米复合涂层能够在黑暗中持续发光长达 1.5 小时。将不同比例的镧系元素掺杂的铝锶氧化物 (LASO) 纳米粒子固定在聚苯乙烯 (PS) 中,并开发为用于木材基材的纳米复合涂层。为了在制备的纳米复合涂层中产生透明度,LASO 以纳米级颗粒的形式有效分散,以确保均匀分散,而不会在 PS 基质中结块。涂覆的木材在 374 nm 处显示吸收带,在 434 nm 和 518 nm 处显示两个发射带。发光光谱显示出持久磷光和依赖于 LASO 比率的光致变色荧光。涂层木材改善的超疏水性和抗划伤性可归因于聚苯乙烯基质中加入的 LASO NP。与未涂覆的木质基材相比,涂覆的 LA​​SO-PS 纳米复合薄膜还表现出光稳定性和高耐久性。目前的研究证明了智能木材的潜在大规模制造用于某些应用,例如建筑物中的安全方向标志、家居产品和智能窗户。与未涂覆的木质基材相比,涂覆的 LA​​SO-PS 纳米复合薄膜还表现出光稳定性和高耐久性。目前的研究证明了智能木材的潜在大规模制造用于某些应用,例如建筑物中的安全方向标志、家居产品和智能窗户。与未涂覆的木质基材相比,涂覆的 LA​​SO-PS 纳米复合薄膜还表现出光稳定性和高耐久性。目前的研究证明了智能木材的潜在大规模制造用于某些应用,例如建筑物中的安全方向标志、家居产品和智能窗户。
更新日期:2021-08-28
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