A pyrene-based probe bearing benzothiazole ionophore (Py-BTZ) was synthesised as a “turn-on” fluorescent chemosensor for the detection of Fe³⁺ and Fe²⁺ ions in CH₃CN : H₂O (1 : 1, v/v) solvent mixes. The chemosensor showed optical as well as colorimetric changes towards Fe³⁺ and Fe²⁺ ions along with a remarkable enhancement in fluorescence emission. The detection limit of Py-BTZ towards Fe³⁺ and Fe²⁺ ions was found to be 2.61 μM and 2.06 μM, respectively. The binding of Py-BTZ with Fe³⁺ and Fe²⁺ was determined by using FT-IR experiments. Interestingly, Py-BTZ shows aggregation induced emission enhancement (AIEE) properties in polar solvent mixes such as CH₃CN : H₂O (1 : 1, v/v).

中文翻译：

---

based基荧光开启化学传感器：聚集诱导的发射增强及其在Fe ³⁺和Fe ²⁺识别中的应用

合成了带有苯并噻唑离子载体（Py-BTZ）的pyr基探针，作为“开启”荧光化学传感器，用于检测CH ₃ CN：H ₂ O（1：1，v中的Fe ³⁺和Fe ²⁺离子）/ v）混合溶剂。化学传感器显示出对Fe ³⁺和Fe ²⁺离子的光学以及比色变化，并且荧光发射显着增强。发现Py-BTZ对Fe ³⁺和Fe ²⁺离子的检出限分别为2.61μM和2.06μM。结合PY-BTZ与铁³⁺和Fe ²⁺通过FT-IR实验确定。有趣的是，Py-BTZ在极性溶剂混合物（例如CH ₃ CN：H ₂ O（1：1，v / v））中显示出聚集诱导的发射增强（AIEE）特性。