Contamination of hydrazine has severe effects on the environment and security systems due to its potent toxic and explosive nature. Therefore, the concept of nano and supramolecular chemistry was applied to develop a nanoassembly for the fluorescent turn-on detection of hydrazine. Weakly emissive silver nanoparticles (AgNPs) decorated with beta-cyclodextrin (β-CD) of size ∼7 nm (β-CD-AgNPs) was synthesized, characterized, and interacted with pyridoxal 5′-phosphate (PLP). With the addition of vitamin B₆ cofactor PLP into the β-CD-AgNPs solution resulted an instantaneous fluorescence enhancement at 532 nm due to the inclusion complexation occurred between the PLP and the β-CD decorated over AgNPs. The formation of inclusion complex between PLP and β-CD was investigated additionally by various theoretical and experimental methods. The nanoassembly PLP_β-CD-AgNPs upon interaction with hydrazine showed a selective turn-on fluorescence at 515 nm. The aldehyde group of PLP acts as the recognition unit and formed a Schiff base upon interaction with hydrazine. This nanoassembly can detect the concentration of hydrazine down to 0.513 μM, and applied successfully to quantify hydrazine from the real environmental samples.

中文翻译：

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通过包合络合在 β-环糊精稳定的银纳米颗粒上修饰维生素 B6 辅因子用于肼的荧光开启检测

肼的污染因其强毒和爆炸性而对环境和安全系统产生严重影响。因此，应用纳米和超分子化学的概念开发了用于肼荧光开启检测的纳米组件。合成、表征了尺寸约为 7 nm 的 β-环糊精 (β-CD) (β-CD-AgNPs) 装饰的弱发射银纳米粒子 (AgNPs)，并与 5'-磷酸吡哆醛 (PLP) 相互作用。添加维生素 B ₆由于 PLP 和修饰在 AgNPs 上的 β-CD 之间发生包合络合，将辅因子 PLP 加入 β-CD-AgNPs 溶液导致 532 nm 处的瞬时荧光增强。另外通过各种理论和实验方法研究了PLP和β-CD之间包合物的形成。与肼相互作用后的纳米组装 PLP_β-CD-AgNPs 在 515 nm 处显示出选择性开启荧光。PLP的醛基作为识别单元，与肼相互作用形成席夫碱。该纳米组件可以检测低至 0.513 μM 的肼浓度，并成功应用于实际环境样品中的肼定量。