Sudan I dye-based smart low molecular weight gelators with/without a perfluoroalkyl group have been successfully synthesized and characterized by rheological measurements, scanning electron microscopy (SEM), IR, and NMR spectroscopies. The gelation behaviors in response to temperature, pH changes, metal cations, and UV-vis light irradiation are investigated. Compounds 1 and 2 could selectively sense the Cu²⁺ cation in the presence of other metal cations. Moreover, compound 2 with a perfluoroalkyl group shows phase selective gelation ability. This work also provides a valuable reference for exploiting photosensitive materials as chemosensors.

中文翻译：

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基于用于相选择凝胶剂和化学传感器的苏丹红 I 染料衍生物分子组装的多响应凝胶化

已成功合成具有/不具有全氟烷基的基于苏丹红 I 染料的智能低分子量凝胶剂，并通过流变测量、扫描电子显微镜 (SEM)、红外和核磁共振光谱对其进行了表征。研究了响应温度、pH 变化、金属阳离子和紫外-可见光照射的凝胶化行为。在其他金属阳离子存在的情况下，化合物1和2可以选择性地检测 Cu ²⁺阳离子。此外，具有全氟烷基的化合物2显示出相选择性凝胶化能力。该工作也为开发光敏材料作为化学传感器提供了有价值的参考。