Hydrazine (NH) serves as a crucial industrial raw material and finds extensive applications in the fields of medicine, pesticides, ecological environment, and textile dyes. Excessive residue of hydrazine will cause significant toxicity risks to the ecosystem and human health. Traditional detection methods often require multi-step pretreatment of samples, and complex instrumentation, and are time-consuming, which is not conducive to rapid on-site detection. Therefore, it is imperative to develop a method suitable for rapid detection of NH in multiple fields. In this study, we constructed a red emission fluorescent probe (). can recognize NH by colorimetric and fluorescence dual-channel response with a good anti-interference ability and a low detection limitation. The fluorescence emission of is attributed to the ICT effect by DFT calculations, and a new product 3-benzo[]chromene-2-carbaldehyde hydrazine is formed after recognition of NH. A linear relationship was established between the ratio of red-blue (R/B) coming from the fluorescence color of and the NH level. Hence, a -based smartphone sensing platform for detecting NH was developed, and the NH content can be rapidly detected with satisfactory accuracy in the lake water samples. In addition, the residues of NH in soils, plants and food samples can be visualized, and can image for NH in living cells, as well as NH vapor can be detected by using the electrospinning film loaded with . In particular, the fluorescent probe can be combined with a smartphone for the detection and visual imaging of hydrazine in environmental samples. We believe the and smartphone-based sensing platforms constructed in this paper will be a powerful tool for visual quantitative detection of NH in the fields of food safety assessment, bioimaging, and environmental protection.

中文翻译：

---

智能手机辅助的双通道 ICT 荧光探针，可定量检测活细胞、水、土壤、植物和食品样品中残留的肼并可视化


肼（NH）是重要的工业原料，在医药、农药、生态环境、纺织染料等领域有着广泛的应用。肼残留过量将对生态系统和人类健康造成重大毒性风险。传统的检测方法往往需要对样品进行多步预处理，仪器设备复杂，且耗时长，不利于现场快速检测。因此，开发适合多个领域快速检测NH的方法势在必行。在这项研究中，我们构建了一种红色发射荧光探针（）。可通过比色和荧光双通道响应识别NH，具有良好的抗干扰能力和较低的检测限。通过DFT计算将其荧光发射归因于ICT效应，识别NH后形成新产物3-苯并[]色烯-2-甲醛肼。荧光颜色的红蓝比（R/B）与NH水平之间建立了线性关系。因此，开发了一种基于智能手机的NH检测传感平台，可以快速且准确地检测湖水样品中的NH含量。此外，土壤、植物和食品样品中NH的残留可以可视化，并且可以对活细胞中的NH进行成像，并且可以使用负载的静电纺丝薄膜来检测NH蒸气。特别是，荧光探针可以与智能手机结合使用，用于环境样品中肼的检测和视觉成像。 我们相信本文构建的基于智能手机的传感平台将成为食品安全评估、生物成像和环境保护领域中NH视觉定量检测的有力工具。