【作者】 孙笑笑； 柳汝信； 费强； 单洪岩； 冯国栋； 郇延富；

【Author】 Xiaoxiao Sun;R.X.Liu;Q.Fei;H.Y.Shan;G.D.Feng;Y.F.Huan;College of Chemistry, Jilin University;

【机构】 吉林大学化学学院；

【摘要】 碘是生物体必需的微量营养元素。碘摄入量不足会导致碘缺乏病,过量的碘也会导致甲状腺肿大。这项工作报道了以未标记的柠檬酸根离子保护的金纳米粒子为探针对碘离子进行检测的可行性。众所周知,在一些聚集剂存在的情况下,金纳米粒子很容易发生聚集并伴随有颜色的改变,而汞离子的加入可以起到保护金纳米粒子使其不被聚集的作用,另外,碘离子可以和汞离子络合,这样金纳米粒子会再次失去保护进而发生聚集。通过这一设想实现对碘离子高灵敏、高选择性检测。更多还原

【Abstract】 Iodine is an essential micronutrient for living organisms. Inadequate iodine intake can lead to iodine-deficiency disorders. Excessive iodine can also cause thyroid enlargement. This work reports on the applicability of unmodified citrate-protected gold nanoparticles(AuNPs) as colorimetric nanoprobes for iodide detection. As we all know, in the presence of some aggregative agents, AuNPs are easily aggregated and accompanied by color changes, and the addition of mercury ions can protect AuNPs from being aggregated. In addition, iodide ions can combine with mercury ions so that gold nanoparticles will lose their protection and aggregate again. Through this strategy, we can detect iodide ions with high sensitivity and selectivity.更多还原