A novel probe 1 for detection of Hg²⁺ based on rhodamine platform was developed. The probe showed a high selectivity and anti–interference capability toward Hg²⁺ even in the presence of other metal ions (except Cu²⁺) in CH₃CN–H₂O (7/3, v/v) solution, and the low detection limits of 0.12 μM and 0.38 μM by using absorbance and fluorescence methods, respectively. Moreover, the mechanism of detecting Hg²⁺ was demonstrated due to the probe hydrolyzed to rhodamine acid in the presence of Hg²⁺ and exhibited a characteristic absorption band at 554 nm, which was recognized via the “naked–eye”. Noticeably, the probe was successfully applied to cell staining and the colorimetric detection for Hg²⁺ could realize by the test strips.

开发了基于罗丹明平台的新型Hg ²⁺探针1。即使在CH ₃ CN–H ₂ O（7/3，v / v）溶液中存在其他金属离子（Cu ²⁺除外）的情况下，该探针也对Hg ²⁺具有很高的选择性和抗干扰能力。通过使用吸光度法和荧光法分别可实现0.12μM和0.38μM的低检测限。此外，检测汞的机理²⁺是由于在汞的存在下水解成酸罗丹明探针证实²⁺和在554纳米，将其识别表现出特征吸收带通过“裸眼”。值得注意的是，该探针已成功应用于细胞染色，并且通过试纸条可以实现Hg ²⁺的比色检测。