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设计合成了一种以8-羟基喹啉(8-HQ)为捕获基团,胆固醇(Chol)为辅助结构的新型光化学稳定的对苯乙炔基苯(BPEB)衍生物(OPBMQ)。研究表明,该化合物荧光光谱由8-HQ的荧光发射和BPEB的荧光发射组成,且其荧光发射对沙林毒气模拟物(DCP)的存在极为敏感。计算检出限可达1×10~(-9)mol·L~(-1)以下。此外,其它相关神经毒剂模拟物、有机磷农药,甚至它们的混合物的存在均不显著干扰化合物对DCP的传感。更为重要的是,无论是以高纯水、自来水,还是海水作为介质,均对测定结果没有显著影响。需要指出的是,对沙林毒气模拟物的灵敏、高选择性测定也可以在滤纸片上以目视法进行。基于这些结果,发展了一种概念性沙林毒气模拟物检测仪器。
A novel photochemically stable p-phenylethynylbenzene (BPEB) derivative (OPBMQ) with 8-hydroxyquinoline (8-HQ) as capture group and Chol as auxiliary structure was designed and synthesized. The results showed that the fluorescence spectrum of the compound consisted of fluorescence emission of 8-HQ and fluorescence emission of BPEB, and its fluorescence emission was very sensitive to the existence of sarin gas-mimics (DCP). The limit of detection is up to 1 × 10 ~ (-9) mol·L -1. In addition, the presence of other related nerve agent mimetics, organophosphorus pesticides, and even their mixtures did not significantly interfere with the compound’s sensing of DCP. More importantly, no matter whether it is high purity water, tap water or seawater, there is no significant effect on the measurement results. It should be noted that the sensitive and highly selective determination of sarin gas simulants can also be performed visually on filter paper. Based on these results, a conceptual sarin gas simulation testing instrument has been developed.