Analytical Sciences

Abstract − Analytical Sciences, 33(10), 1169 (2017).

Rhodol-derived Colorimetric and Fluorescent Probe with the Receptor of Carbonothioate for the Specific Detection of Mercury Ions
Qingxia DUAN,* Meng ZHANG,* Chunxia SHENG,** Caiyun LIU,* Liu WU,* Zhenmin MA,* Qiang ZHAO,* Zhongpeng WANG,* and Baocun ZHU*
*School of Resources and Environment, University of Jinan, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, Jinan 250022, China
**Qufu Bureau of Agriculture, Qufu 273100, China
Developing some methods that can simply and effectively detect mercury ions (Hg2+) in the environment and biological systems are very important due to the problems of high toxicity and biological accumulation. Herein, we report a simple rhodol-derived colorimetric and fluorescent probe rhodol-Hg with a recognition receptor of carbonothioate for the specific determination of Hg2+. The color of probe rhodol-Hg solution changed remarkably from colorless to pink in the presence of Hg2+, thus rhodol-Hg could act as a “naked-eye” probe for Hg2+. Additionally, this probe exhibited high selectivity and ultrasensitivity in aqueous solution with the limit of detection (LOD) of 1.4 nM toward Hg2+, and the linear range was 0 – 0.8 μM determined by turn-on fluorescence spectrometry. Importantly, this probe has been successfully used for the detection of Hg2+ in environmental waters and living cells.