Abstract

A stilbene-based halochromic dye was synthesized, which possesses the effect of intramolecular color matching. By dyeing cotton fabric with the synthesized dye, a textile sensor material was prepared to visually monitor the acidity of the biologically significant pH range (4.5–8.0). The sensitivity of the sensor material to changes in the acidity of the environment, as well as the color stability to the action of saline solutions simulating biological fluids (sweat and blood plasma), were explored. A visually noticeable pH-induced color change of the material is observed in the pH range of 3.0–10.0. In the pH range of buffer solutions at pH 3, the color of the samples is green, from 6 to 8, orange, and from 9 and above, purple. The average color change time was 3 s. The results obtained show the promise of using the studied azo compound in technologies for designing multifunctional pH-sensitive textile sensor materials.

中文翻译：

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用于纺织传感器材料的具有分子内混色效应的新型卤代二苯乙烯染料

摘要

合成了一种二苯乙烯基卤代染料，具有分子内配色作用。通过用合成染料对棉织物进行染色，制备了一种纺织传感器材料，用于目视监测具有生物意义的 pH 范围 (4.5–8.0) 的酸度。研究了传感器材料对环境酸度变化的敏感性，以及模拟生物体液（汗液和血浆）的盐溶液作用的颜色稳定性。在 3.0–10.0 的 pH 范围内，可以观察到材料由视觉上明显的 pH 引起的颜色变化。在pH 3的缓冲溶液的pH范围内，样品的颜色为绿色，6至8为橙色，9及以上为紫色。平均颜色变化时间为3秒。获得的结果显示了在设计多功能 pH 敏感纺织传感器材料的技术中使用所研究的偶氮化合物的前景。