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CIELAB彩色空间作为一个用于跟踪聚合物pH指标变色化学反应的场所

Takayuki Suzuki¹, Chihiro Ito¹, Karen Kitano¹

¹Department of Applied Chemistry, School of Engineering, Tokyo Denki University, 5 Senjyu Asahi-cho, Adachi, Tokyo 120-8551, Japan.

|September 2, 2024

概括

新的聚合物染料薄膜根据pH值改变颜色. 研究人员发现,这些片显示线性颜色变化,使高级应用程序能够进行精确的控制和测量.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
颜色科学颜色科学

背景情况:

交联的聚合物染料薄膜提供可调节的光学特性.
对于智能材料来说,响应pH等环境刺激的可逆色彩变化是理想的.

研究的目的:

准备和表征交联的聚合物染料薄膜与pH响应的颜色变化.
调查这些电影中颜色转换的色度特性和线性.
为了建立染料度,质子化和颜色变化之间的定量关系.

主要方法:

制备含有酸 (NP) 和酸 (AB) 染料部分的交联聚合物薄膜.
使用D65白光源测量通过膜传输的光的色度测量.
在薄膜质子化后,在CIELAB色彩空间中分析色彩点过渡.
开发一个几何方程来建模AB膜的质子化.

主要成果:

聚合物薄膜表现出可逆的颜色变化:NP薄膜在质子化时从黄色转变为无色,AB薄膜从黄色转变为红紫.
在低染料度下观察到色度点的线性位置,表明感知线性.
感知线性归因于避免非线性感知现象.
一个几何方程成功地描述了基于立体直线性的AB膜的三维质子.

结论:

具有NP和AB部分的交联聚合物染料薄膜显示出可预测的,pH取决于颜色变化.
观察到的感知线性对于在色彩响应中实现静态度线性至关重要.
开发的几何模型准确地描述了在CIELAB空间中的AB膜的质子化行为.

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