Key Laboratory of Polymer Materials of Gansu Province, Research Center of Gansu Military and Civilian Integration Advanced Structural Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Anning East Road 967, Lanzhou, Gansu 730070, P. R. China.
Photochem Photobiol Sci. 2020 Dec 1;19(12):1690-1696. doi: 10.1039/d0pp00302f. Epub 2020 Nov 18.
A novel fluorescent chemosensor based on trimesoyl chloride-rhodamine (TR) was successfully synthesized. Rising chromogenic and fluorogenic spectral enhancements could be observed in trimesoyl chloride-rhodamine (TR) probes when Hg and Fe were added, respectively. TR has shown selectivity for Hg and Fe with high sensitivity due to metal ion complexation induced photophysical "turn-on" signaling responses. The detection limit towards Hg was 2.46 × 10 M as determined by the 3σ method. At the same time, fluorogenic spectral enhancements were observed in TR, which exhibits a superior sensitive and selective recognition towards Fe with 4.11 × 10 M of the detection limit. The test strips were used for colorimetric and simple detection towards Hg, which might finally enable the advancement of the Hg sensor in the field of on-site detection.
一种基于三光气-罗丹明（TR）的新型荧光化学传感器成功合成。当分别加入 Hg 和 Fe 时，三光气-罗丹明（TR）探针可以观察到明显的显色和荧光增强。由于金属离子配位诱导的光物理“开启”信号响应，TR 对 Hg 和 Fe 表现出高灵敏度和选择性。通过 3σ 法确定 Hg 的检测限为 2.46×10-7 M。同时，在 TR 中观察到荧光光谱增强，对 Fe 的检测限为 4.11×10-7 M，具有较高的灵敏度和选择性。该测试条用于 Hg 的比色和简单检测，这可能最终推动 Hg 传感器在现场检测领域的发展。
