The detection of nitroaromatic explosives in real samples is essential for environmental monitoring because of their strongly powerful nature and wide applications in industries. Aggregation-induced emission enhancement (AIEE) active fluorescent probe has been widely employed to detect nitroaromatic explosives. Hereby, a simple V-shaped bispyrene-based fluorescent probe (called ) with AIEE properties was designed and synthesized, which was fully charactered by 1D NMR, ESI, FTIR, and 2D NOESY spectra. The displayed bright blue-green fluorescence excimer emission at 480 nm in DMF/HO (v/v 1:1). It is observed that the fluorescence excimer emission of at 480 nm was quenched by PA in solution with a quenching constant of 5.45 × 10 M, and the limit of detection was approximately 0.139 μM. The details of the sensing mechanism were explained using H NMR titrations, Job’s plot and Bensi-Hildebrand methods, which revealed a 1:1 binding ratio the π-π interactions between PA and . Meanwhile, it exhibited outstanding anti-interference ability in the detection of PA when interfering analytes were added under the same conditions. Furthermore, low-cost thin-layer chromatography (TLC) plates coated with were developed as fluorescent tools for naked-eye detection of PA in the solid state. Therefore, this work provides a new method for constructing an AIEE fluorescent probe for the detection of nitroaromatic explosives to utilize in environmental monitoring.

中文翻译：

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聚集诱导发射增强 (AIEE) 活性双芘荧光探针：用于检测硝基芳香族化合物的“关闭”荧光

由于硝基芳香族爆炸物的强大性质和在工业中的广泛应用，实际样品中硝基芳香族爆炸物的检测对于环境监测至关重要。聚集诱导发射增强（AIEE）活性荧光探针已广泛用于检测硝基芳香族爆炸物。由此，设计并合成了一种具有 AIEE 特性的简单 V 形双芘基荧光探针（称为 ），并通过 1D NMR、ESI、FTIR 和 2D NOESY 光谱对其进行了充分表征。在 DMF/H2O（v/v 1:1）中，在 480 nm 处显示明亮的蓝绿色荧光准分子发射。观察到480 nm处的准分子荧光发射被溶液中的PA猝灭，猝灭常数为5.45 × 10 M，检测限约为0.139 μM。使用 1H NMR 滴定、乔布图和 Bensi-Hildebrand 方法解释了传感机制的细节，揭示了 PA 和 之间的 π-π 相互作用的结合比为 1:1。同时，在相同条件下添加干扰物时，其在PA检测中表现出优异的抗干扰能力。此外，还开发了涂有 的低成本薄层色谱 (TLC) 板作为荧光工具，用于裸眼检测固态 PA。因此，这项工作为构建用于环境监测中硝基芳香族爆炸物检测的AIEE荧光探针提供了一种新方法。