Fast and sensitive fluorescent detection of inorganic mercury species and methylmercury using a fluorescent probe based on the displacement reaction of arylboronic acid with the mercury species

Abstract

We present a reaction-based fluorescent probe for Hg2+ and methylmercury based on the displacement reaction of arylboronic acid with mercury species.

Boric Acid Functional Fluorescent Covalent–Organic Framework for Sensitive and Selective Visualization of CH3Hg+

“…A new peak appeared with a longer retention time than 4-ethynylphenylboronic acid, indicating that the reaction of 4-ethynylphenylboronic acid with CH 3 Hg + synthesized a more hydrophobic compound than the postmodified precursor (Figure S10). It has been reported that CH 3 Hg + substitutes the boric acid functional group on 4-ethynylphenylboronic acid to produce aryl mercury compounds. ,, To further illustrate the sensing process leading to fluorescence quenching after mercury substitution, we dispersed COF-BA in CH 3 Hg + aqueous media (0.1 mg mL –1 ), stirred overnight at room temperature, and then obtained the product by centrifugation, washing, and drying thoroughly with EtOH and water. Then, the samples were subjected to XPS, FTIR spectroscopy, and XRD measurements.…”

“…In recent years, fluorescence-based detection methods have gradually attracted the attention of many researchers due to their high detection sensitivity, low cost, and ease of in situ and real-time detection. Many fluorescent materials, such as organic molecules, − quantum dots, and metal–organic frameworks (MOFs), − have been designed and developed for the fluorescence detection of methylmercury. Amrita Chatterjee et al developed a cost-effective aggregation-induced emission (AIE) active fluorescent chemical dosimeter for methylmercury detection .…”

Fluorescent probe for mercury ion imaging analysis: Strategies and applications

“…Based on the displacement reaction between arylboronic acid and Hg 2+ , Neupane and co-workers synthesized a new fluorescent probe 40 with enhanced fluorescence signal for Hg 2+ detection (Fig. 16) [101]. They used dansyl as fluorophore, and probe 40 was synthesized after connected dansyl with phenylboronic acid through sulfonamide group.…”

Exploring Broad Molecular Derivatization as Tool in Selective Fluorescent Detection of Mercury(II) by a Series of Large Stokes Shift 1,4-Bis(5-phenyl-1H-imidazol-4-yl)benzenes

“…Furthermore, the metal–organic interactions often reported to be responsible for observed sensing actions are often proposed for bonding imaginations that are sometimes strange or even apparently impossible (e.g., Scheme ). − Therefore, we considered it necessary to explore possible structural clues surrounding fluorescent detection mechanisms by capitalizing on our background knowledge of coordination/structural chemistry.…”