Mir Noshin, Jalilian Sara, Karimi Pouya, Nejati-Yazdinejad Massoud, Khammarnia Somaye
Department of Chemistry, University of Zabol P. O. Box 98615-538 Zabol Islamic Republic of Iran
Department of Chemistry, Payame Noor University Iran.
RSC Adv. 2018 Jun 13;8(39):21745-21753. doi: 10.1039/c8ra03448f.
5-Amino-1,3,4-thiadiazole-2-thiol was used to synthesize a novel fluorescent functionalizing group on a FeO@SiO magnetic nanocomposite surface for detection of heavy metal ions in water samples. The prepared probe was characterized by using X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and a vibrating sample magnetometer. Among various tested ions, the new nanocomposite responded to Hg ions with an intense fluorescence "turn-off". The limit of detection of the probe shows that it is sensitive to the minimum Hg concentration of 48.7 nM. Theoretical calculations were done for estimating binding energies of the three possible bonding modes and the visualized molecular orbitals were presented.
5-氨基-1,3,4-噻二唑-2-硫醇用于在FeO@SiO磁性纳米复合材料表面合成一种新型荧光功能化基团，用于检测水样中的重金属离子。通过X射线衍射、透射电子显微镜、傅里叶变换红外光谱和振动样品磁强计对制备的探针进行了表征。在各种测试离子中，新型纳米复合材料对Hg离子有强烈的荧光“猝灭”响应。该探针的检测限表明它对低至48.7 nM的Hg浓度敏感。进行了理论计算以估计三种可能键合模式的结合能，并展示了可视化的分子轨道。
