Imidazo[1,2-a]pyridine based small organic fluorescent molecules for selective detection of nerve agents simulants
作者:Ashima Thakur、Abha Sharma
DOI:10.1016/j.saa.2022.121633
日期:2022.12
A fused heterocyclic ESIPT imidazo[1,2-a]pyridine-based probes for colorimetric and fluorometric detection of nerve agents simulant sarin (DCP) and tabun (DCNP) are reported. The probes (5b, 6a & 6b) were found to be highly sensitive and selective for the detection of DCNP and DCP at a micromolar concentration within seconds with no observed interference from other various types of analytes. The LOD
报道了一种基于稠合杂环 ESIPT 咪唑并[1,2 - a ] 吡啶的探针,用于比色和荧光检测神经毒剂模拟物沙林 (DCP) 和塔崩 (DCNP)。发现探针(5b、6a和6b)对于在数秒内检测微摩尔浓度的 DCNP 和 DCP 具有高灵敏度和选择性,并且没有观察到来自其他各种类型分析物的干扰。发现6b对 DCP的 LOD 为0.6 µM,线性范围为 0 到 8 µM。用探针6b制造的低成本便携式纤维素纸条用于实时检测气相和加标水中的 DCP。发现纸条产品在检测水和蒸汽状态下 DCP 的存在时有效,其颜色变化很大,肉眼和手持紫外灯在 365 nm 波长下可以很容易地观察到这些变化。