Highly transparent cellulose-based phosphorescent materials with tunable afterglow colors and white emission
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View abstract on PubMed
Summary
This summary is machine-generated.Researchers developed transparent wood materials exhibiting tunable room temperature phosphorescence (RTP) with extended afterglow. These novel RTP wood composites offer adjustable colors and high transparency for advanced lighting and optical applications.
Area Of Science
- Materials Science
- Optoelectronics
- Biomaterials
Background
- Wood-based materials offer desirable properties like extended afterglow, high haze, and mechanical strength for lighting applications.
- Achieving wood-based room temperature phosphorescence (RTP) materials with tunable colors and high transparency remains a significant challenge.
Purpose Of The Study
- To fabricate a novel long-persistent phosphorescent transparent composite using delignified wood as a framework.
- To achieve on-demand tunable afterglow colors while maintaining high transparency across the visible spectrum.
Main Methods
- Infiltration of delignified wood with polymethyl methacrylate (PMMA) doped with phosphors (carbazole, naphthalene, pyrene).
- Formulation of phosphors with varying types and concentration ratios to control emission colors.
- Characterization of transparency, afterglow duration, and color tunability.
Main Results
- Fabricated RTP wood composites exhibit over 70% transparency and an extended afterglow duration of up to 8 seconds.
- Achieved diverse phosphorescence colors, including white emission, by adjusting phosphor composition.
- Demonstrated dynamically tunable afterglow colors over time due to varied phosphorescent lifetimes.
Conclusions
- The developed wood-based RTP materials offer a promising platform for transparent lighting and optical devices.
- The combination of high transparency, tunable colors, and extended afterglow in these natural wood composites opens avenues for LED materials, optics, and building materials.
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