Hyperspectral and Weather Resistant Biomimetic Leaf Enabled by Interlayer Confinement

• DOI: 10.1002/adfm.202405908
• Publication Date: 2024-07-06T13:37:10Z
• Authors: Peiyao Yang; Xiangcui Liu; Zhiming Liu; Tong Zhang; Haitao Zheng; Houzheng Ou; Yuchao Wang; Yu Bai; Mengjie Liu; Danni Deng; Jinxian Wang; Yingbi Chen; Huanran Zheng; Jiabi Jiang; Yongpeng Lei
• Keywords: Chromaticity; Chromophore; RGB color model; Color difference

Abstract Mimicking the characteristics and achieving specific functions of biological systems is stirring but challenging. Generally, pigments in commercial coating can only achieve a similarity chromaticity, while cannot obtain solar reflective spectrum whose difficulty resides simulating spectral simultaneously. Unfortunately, traditional organic show poor weather heat resistance. Herein, with little difference color (Δ E ab * ), high similarity, as well adjustable green peak similar red edge slope compared common plants (pagoda tree leaf, etc.) 400–2500 nm, also attained. It achieved by interlayer confined pigment Mg/Al‐layered double hydroxide (Mg/Al‐LDH) layers. The corresponding biomimetic leaf displays hyperspectral performance angle cosine 0.9922 resistance at 120 °C. longer than that mechanical mixing demonstrated. intercalated chromophores sodium copper chlorophyllin Mg/Al‐LDH confinement contribute to excellent performance. This work provides requiring same chromaticity plants, filling long‐term use demand gap for weather‐resistant vegetation.