Fluorescence sensing of dichlorvos pesticide by the luminescent Tb(III)-3-ally-salicylohydrazide probe
作者:Ibrahim Ahmed Ibrahim、Abbas Mamdoh Abbas、Hatem Medhat Darwish
DOI:10.1002/bio.3357
日期:2017.12
consisted of terbium(III) with 3‐ally‐salicylohydrazide in ethanol, in which the 1:2 [Tb3+:S1] molar ratio was the best stoichiometric ratio for the probe. The ligand 3‐ally‐salicylohydrazide (S1) was synthesized, then was confirmed by IR, CHN, LC–MS and 1H NMR. The sensitivity of the probe's fluorescence spectra towards the presence of eight organophosphorus pesticides in ethanolic solution was studied
开发并表征了一种荧光探针,该探针由ter(III)与3-烯丙基水杨酰肼在乙醇中组成,其中1:2 [Tb 3+:S 1 ]摩尔比是探针的最佳化学计量比。合成了配体3烯丙基水杨酰肼(S 1),然后通过IR,CHN,LC-MS和11 H NMR。研究了该探针的荧光光谱对乙醇溶液中八种有机磷农药存在的敏感性,其中该探针对敌敌畏农药表现出显着的敏感性。由于敌敌畏农药的逐步添加,观察到了探针荧光强度的明显增强。计算的检测下限(LOD)为1.183μM,定量下限(LOQ)为3.94μM。根据Benesi-Hildebrand方程和热力学参数ΔH,ΔS和ΔG,通过计算不同温度下的结合常数,进一步表征了探针与敌敌畏之间相互作用的作用力的性质。为了评估该方法的分析适用性,