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Facile production of smart superhydrophobic nanocomposite for wood coating towards long‐lasting glow‐in‐the‐dark photoluminescence
Luminescence, Volume: 36, Issue: 8
Swansea University Author: Mokarram Hossain
Accepted Manuscript under embargo until: 28th August 2022
Smart photoluminescent nanocomposite surface coating was prepared for simple industrial production of long-persistent phosphorescence and superhydrophobic wood. The photoluminescent nanocomposite coatings were capable to continue emitting light in the dark for prolonged time periods that may reach 1...
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Smart photoluminescent nanocomposite surface coating was prepared for simple industrial production of long-persistent phosphorescence and superhydrophobic wood. The photoluminescent nanocomposite coatings were capable to continue emitting light in the dark for prolonged time periods that may reach 1.5 hrs. Difference ratios of lanthanide-doped aluminum strontium oxide (LASO) nanoparticles immobilized into polystyrene (PS) was developed as a nanocomposite coating for wood substrates. To accomplish transparency to the prepared nanocomposite coating, LASO was efficiently dispersed in the form of nano-scaled particles to ensure homogeneous dispersion without agglomeration in the polystyrene matrix. The coated woods showed an absorption band at 374 nm and two emissive bands at 434 and 518. The luminescence spectra showed both long-persistent phosphorescence as well as photochromic fluorescence relying on the LASO ratio. The improved superhydrophobicity and resistance to scratching of the coated woods can be attributed to the LASO NPs incorporated in the polystyrene matrix. In comparison to the uncoated wood substrate, the coated LASO-PS nanocomposite film displayed also photostability and high durability. The current study proved potential high-scale manufacturing of smart wood for a number of applications, such as safety directional signs in buildings, household products, and smart windows.
College of Engineering