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Preparation of flame‐retardant, hydrophobic, ultraviolet protective, and luminescent transparent wood

Ali Aldalbahi, Mehrez E. El‐Naggar, Tawfik A. Khattab, Mokarram Hossain Orcid Logo

Luminescence, Volume: 36, Issue: 8, Pages: 1922 - 1932

Swansea University Author: Mokarram Hossain Orcid Logo

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DOI (Published version): 10.1002/bio.4126

Abstract

Transparent wood with multifunctional properties has recently attracted more attention as an efficient building product. Here, we describe the development of transparent wood with long-persistent phosphorescence, tough surface, high durability, photostability, and reversibility without fatigue, and...

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Published in: Luminescence
ISSN: 1522-7235 1522-7243
Published: Wiley 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57451
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Abstract: Transparent wood with multifunctional properties has recently attracted more attention as an efficient building product. Here, we describe the development of transparent wood with long-persistent phosphorescence, tough surface, high durability, photostability, and reversibility without fatigue, and with ultraviolet shielding, superhydrophobicity, and flame-retardant activity. This long-persistent phosphorescent, or glow-in-the-dark, smart wood exhibited an ability to continue emitting light for prolonged periods of time. The photoluminescent translucent wooden substrate was prepared by immobilizing lignin-modulated wooden bulk with an admixture of methylmethacrylate (MMA), ammonium polyphosphate (APP), and lanthanide-doped strontium aluminate (LSA; SrAl2O4:Eu2+,Dy3+) phosphor nanoparticles. The photoluminescent transparent wood displayed a colour switch from colourless to bright white beneath ultraviolet (UV) light and greenish-yellow in the dark as reported by Commission Internationale de l'Éclairage laboratory colorimetric space coordinates. The generated phosphorescent wooden substrates demonstrated an absorbance band at 365 nm and an emission band at 516 nm. The phosphorescent transparent wood was improved flame-retardant properties, ultraviolet shielding, and superhydrophobic properties, as well as a reversible long-persistent phosphorescent responsiveness to UV light without fatigue. The current approach demonstrated a potential large-scale production strategy for multifunctional transparent wooden substrates for a range of applications such as smart windows, gentle indoor and outdoor lighting, and safety directional signs in buildings.
Keywords: flame retardant; long-persistent phosphorescence; strontium aluminate; superhydrophobic; transparent wood
College: College of Engineering
Funders: King Saud University, Riyadh, Saudi Arabia. Grant Number: RSP-2021/30
Issue: 8
Start Page: 1922
End Page: 1932