高对比度无色到有色热色材料 高对比度无色到有色热色材料
Diptiman Dinda1, Noel Muñoz Pérez1, Jordi Faraudo2
1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, 08193, Spain.
Small (Weinheim an der Bergstrasse, Germany)
|November 24, 2025
概括
新的热色材料通过使用三组分混合物实现高对比度的颜色变化. 材料颜色是由颜色开发器和相变材料组件的基链长度控制的.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 物理化学 物理化学
背景情况:
- 热色材料随着温度的变化而改变颜色.
- 控制热色特性对于传感器和安全油墨等应用至关重要.
- 现有的热色系统往往缺乏高对比度或可调节的过渡温度.
研究的目的:
- 开发新的高对比,无色到有色的热色材料.
- 建立一个设计规则来控制色彩状态和过渡温度.
- 为了证明系统在各种应用中的多功能性.
主要方法:
- 合成三组分混合物,包括甲基醇/铁醇衍生物 (颜色开发剂 - CD),脂肪酸相变材料 (PCM) 和白色染料.
- 密度函数理论 (DFT) 计算用于研究结相互作用.
- 热和光谱测量以分析相位行为和色彩.
- 制备结构混合物,如固体脂质颗粒和聚合物复合材料.
主要成果:
- 实现了高对比度的无色到有色的热色材料.
- 证明了固态中的色彩可以通过CD (CCD) 和PCM (CPCM) 的相对基链长度来控制.
- 在CCD >CPCM (ΔC<0) 时由于相分离而获得的无色固体;由于PCM中的CD溶解而在ΔC≥0时获得的有色固体.
- 该系统在不同的白色染料家族和PCM中证明了可调性,在结构化形式中保持过渡温度.
结论:
- 基于CD-PCM相互作用的可调节热色材料的新设计策略被建立起来.
- 相对基链长度是控制固态颜色的关键参数.
- 开发的材料适用于聚合物复合材料,丝印图案,传感器和隐形安全油墨的应用.
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