Rational design of a functionalized metal–organic framework for ratiometric fluorimetric sensing of Hg²⁺ in environmental water

Abstract

A target-responsive ratiometric fluorimetric sensing strategy for Hg2+ has been rationally designed. The sensing probe was established based on the functionalized metal−organic framework, which was prepared by 3,5-dicarboxyphenylboronic acid (DCPB)...

A Multimode Optical Sensor for Selective and Sensitive Detection of Harmful Heavy Metal Cr(VI) in Fresh Water and Sea Water

“…35 Coincidentally, Li et al designed an Eu-MOF containing arylboronic acid ligand, realizing the ratio detection of Hg 2+ , which greatly improved the detection limit of fluorescence detection of Hg. 36 However, like most single-emission fluorescent sensors for heavy metal ions, these two ratiometric fluorescent sensors still belong to the turn-off type sensors. Similarly, until now, both the turn-on type MOF ratiometric fluorescent sensor and the optical multimode mutual verification sensor have not been reported for convenient and sensitive Cr(VI) detection, despite the need for strictly monitoring Cr(VI) level in water.…”

“…Among them, in terms of heavy metal ion detection, considering that ratio fluorescent sensors could further improve the accuracy of detection, Wang et al developed a ratio fluorescent probe Tb-MOF@PEI and realized the detection of Cu 2+ and Fe 3+ . Coincidentally, Li et al designed an Eu-MOF containing arylboronic acid ligand, realizing the ratio detection of Hg 2+ , which greatly improved the detection limit of fluorescence detection of Hg . However, like most single-emission fluorescent sensors for heavy metal ions, these two ratiometric fluorescent sensors still belong to the turn-off type sensors.…”

A fluorescent probe based on aptamer gold nanoclusters for rapid detection of mercury ions

“…In comparison, fluorometric assay proved to be a facile approach for the detection of Hg 2+ ions as it offered ultra-high sensitivity, rapid detection, satisfactory selectivity, and low-cost application. 15–18 Consequently, fluorescent probes for the detection of Hg 2+ have attracted great attention. Gu Liang et al 19 prepared a simple fluorescent probe L1 based on a coumarin derivative for the detection of Hg 2+ ions.…”