Striking colorimetric probe (CynH) for abrupt detection of hydrazine under complete aqueous solution was achieved. The water soluble probe was designed with electron “push–pull” strategy by coupling of 4-hydroxy benzaldehyde and 2, 3, 3-trimethylindolinine. The positively charged N-propylated indolinine make the probe completely soluble in water. The probe yields eye catching selective detection of hydrazine over other competing analytes with high sensitivity. Obvious colour change was observed from colourless to appearance of bright pink colour with hydrazine. It reacts quickly with hydrazine within 2 min and makes the probe an effective candidate for practical application. The real time application was demonstrated using paper strip to detect hydrazine vapour. This probe is superior to earlier reported probes because of its effective sensing of hydrazine displayed with various applications including real-time strip based sensing, spray test and soil analysis. In all the examinations, the probe yields distinct response with rapid naked eye colour change which overcomes the drawbacks of previous reports.

实现了在完全水溶液下突然检测肼的醒目比色探针（CynH）。通过 4-羟基苯甲醛和 2, 3, 3-三甲基二氢吲哚的偶联，采用电子“推拉”策略设计了水溶性探针。带正电荷的 N-丙基化二氢吲哚使探针完全溶于水。与其他竞争分析物相比，该探针以高灵敏度对肼进行了引人注目的选择性检测。用肼观察到从无色到亮粉色外观的明显颜色变化。它在 2 分钟内与肼快速反应，使该探针成为实际应用的有效候选者。演示了使用纸条检测肼蒸气的实时应用。该探针优于早期报道的探针，因为它对显示的肼有效传感，可用于各种应用，包括基于实时条带的传感、喷雾测试和土壤分析。在所有的检查中，探头产生了明显的反应，肉眼颜色快速变化，克服了以往报道的缺点。