Abstract

We studied the effect of the concentration of copper ions on the absorption spectrum of Rhodamine B in molecular form in an alcohol solution and immobilized in a polymer hydrogel film. The system is sensitive to the presence of copper ions at a concentration of 0.1 mg/L, which is sufficient for practical use. The insolubility of Rhodamine B in water during its immobilization in the volume of a photopolymerizable hydrogel film makes it possible to create a chemosensor that is stable at long exposures and is capable of sensing ultralow concentrations of impurities.

中文翻译：

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固定在薄膜中的若丹明B的光吸收对水中铜离子浓度的光谱依赖性

摘要

我们研究了铜离子浓度对若丹明B在醇溶液中分子形式并固定在聚合物水凝胶薄膜中的吸收光谱的影响。该系统对浓度为0.1 mg / L的铜离子的存在非常敏感，这对于实际应用是足够的。若丹明B固定在可光聚合的水凝胶薄膜的体积中，若丹明B在水中的不溶性使其成为可能的化学传感器，该传感器在长时间曝光时稳定，并能够感应超低浓度的杂质。