The mercury-loving unit aminothiourea was introduced into the xanthene fluorophore to synthesized the probe molecule NXH. NXH has a specific response to Hg²⁺, and with the addition of (0 ~ 50 µM) Hg²⁺, the fluorescence intensity of the probe solution was quenched from 2352 a.u. to about 308 a.u. NXH exhibited excellent detection performance of high sensitivity (LOD = 96.3 nM), real-time response (105 s), wide pH range (2.1 ~ 9.3), and strong anti-interference ability for Hg²⁺. At the same time, NXH has wide range of applications for Hg²⁺ detection, which can fluorescence imaging of Hg²⁺ in Hela cells and tea samples, and can also be made into Hg²⁺ detection test paper.

将亲汞单元氨基硫脲引入呫吨荧光团中，合成探针分子NXH。NXH对Hg ²⁺具有特异性响应，随着(0 ~ 50 µM) Hg ²⁺的添加，探针溶液的荧光强度从2352 au淬灭至约308 au NXH表现出优异的高灵敏度检测性能( LOD = 96.3 nM)、实时响应(105 s)、pH范围宽(2.1 ~ 9.3)、对Hg ²⁺抗干扰能力强。同时，NXH在Hg ²⁺检测方面有着广泛的应用，可以对Hela细胞和茶叶样品中的Hg ²⁺进行荧光成像，也可以制成Hg ²⁺检测试纸。