A simple antipyrine based fluorescent probe, 4-[(2-hydroxy-3-methoxy-benzylidene)-amino]-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-3-one (OVAP), has been successfully synthesized using a one-step condensation method. It exhibits dual sensing properties toward Al3+ and Zn2+ in the presence of other relevant metal ions and also displays novel aggregation induced emission enhancement (AIEE) characteristics in its aggregated/solid state. Aggregated OVAP microstructures with interesting morphologies have been synthesized using SDS as a morphology directing agent. Morphologies of the particles are characterized using optical microscopy. Photophysical properties of the as-synthesized OVAP hydrosol are studied using UV-Vis absorption, steady state and time resolved fluorescence spectroscopy. The 'turn on' luminescence property of OVAP is used for the selective detection of trace amounts of Al3+ and Zn2+ and a significant turn on fluorescence enhancement over ∼100-fold is triggered via chelation-enhanced fluorescence (CHEF) through complex formation. The 1 : 1 stoichiometry of each sensor metal ion complex is observed from Job's plot based on UV-Vis absorption titration. The LODs for Al3+ and Zn2+ are found to be 1.05 nM and 2.35 nM, respectively. Notably, the sensor, OVAP, is further demonstrated using a molecular INHIBIT logic gate.

中文翻译：

---

一种基于安替比林的荧光探针，可分别检测Al3 +和Zn2 +及其AIEE行为。

一个简单的基于安替比林的荧光探针4-[（（2-羟基-3-甲氧基-亚苄基）-氨基] -1,5-二甲基-2-苯基-1,2-二氢-吡唑-3-酮（OVAP），一步缩合法已成功合成 在存在其他相关金属离子的情况下，它对Al3 +和Zn2 +具有双重感测特性，并且在其聚集/固态下还表现出新颖的聚集诱导发射增强（AIEE）特性。使用SDS作为形态指导剂合成了具有有趣形态的聚集OVAP微结构。使用光学显微镜表征颗粒的形态。使用紫外可见吸收，稳态和时间分辨荧光光谱法研究了合成后的OVAP溶胶的光物理性质。“开启” OVAP的发光特性用于选择性检测痕量的Al3 +和Zn2 +，通过络合物形成的螯合增强荧光（CHEF）触发了约100倍以上的荧光增强。从基于UV-Vis吸收滴定的乔布图观察到每种传感器金属离子络合物的1：1化学计量。发现Al3 +和Zn2 +的LOD分别为1.05 nM和2.35 nM。值得注意的是，使用分子INHIBIT逻辑门进一步演示了传感器OVAP。s图基于UV-Vis吸收滴定法。发现Al3 +和Zn2 +的LOD分别为1.05 nM和2.35 nM。值得注意的是，使用分子INHIBIT逻辑门进一步演示了传感器OVAP。s图基于UV-Vis吸收滴定法。发现Al3 +和Zn2 +的LOD分别为1.05 nM和2.35 nM。值得注意的是，使用分子INHIBIT逻辑门进一步演示了传感器OVAP。