首页|Weatherability and heat resistance enhanced by interaction between AG25 and Mg/Al-LDH
Weatherability and heat resistance enhanced by interaction between AG25 and Mg/Al-LDH
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Although inorganic pigments in common spec-tral tuning materials show good weatherability and heat resistance,the limited color choices,weak coloring power,poor dispersibility,and a possibility of toxicity limit their development.On the basis of organic pigments which possess a wide range of colors,high coloring power,good transparency,and high safety,herein,the modified pigment and biomimetic coating with improved weatherability,especially ultraviolet(UV)resistance(from 2 to 6 days),was achieved by intercalating acid green 25(AG25)pig-ment into Mg/Al-layered double hydroxides(Mg/Al-LDH).Furthermore,the heat resistance of AG25 was also signif-icantly increased.Moreover,the spectral stability of pig-ments after heat treatment is superior with almost unchanged spectral profile and green reflection peak.The formation of strong N-H bonds and the S-M(Mg,Al)bonds between Mg/Al-LDH laminates and AG25 molecules contributes to the improvement.This work shows potential for biomimetic leaf materials in respect of reflective spectra stability.
Layered double hydroxideBiomimeticAcid green 25InteractionWeatherabilityHeat resistance
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