INNOVATIVE TECHNOLOGIES: Fluorescent Probe Detects Mercury
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چکیده
منابع مشابه
INNOVATIVE TECHNOLOGIES: Fluorescent Probe Detects Mercury
Thick smoke routinely cloaks Southern California hills, highways, and neighborhoods during this region’s autumn wildfire season, with drought contributing to worse fires than usual in the past two years. Wildfire emissions generate larger aerosols than those produced by vehicles—up to 0.4 micrometers (μm) in diameter compared with less than 0.15 μm—according to a new study led by Constantinos S...
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In this study, a quinoline-thiourea conjugate (1-phenyl-3-(quinoline-8-yl) thiourea, PQT) was synthesized and used as a fluorescence sensor to detect mercury ion. The observation is coincident with the well-documented phenomenon that a thiocarbonyl-containing group on a fluorochrome quenches the fluorescence due to the heavy atom effect of the S atom. The large fluorescence enhancement of PQT i...
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Formation of T-Hg(2+)-T complexes changes the configuration of a single-stranded DNA, leading to enhanced fluorescence of an anchored cyanine-based probe that displays restricted intramolecular rotation (RIR)-induced emission. This label-free system can be used as a sensor for mercury ions with a detection limit of 4 nM.
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A DNA probe labeled with a 4-([4-(dimethylamino)phenyl]azo)benzoic acid (DABCYL) quencher and a carboxyfluorescein (FAM) donor at its 5'- and 3'-termini can be used for the detection of Hg(2+) ions and phenylmercury ions (PhHg(+)). This DNA probe possesses a random coil structure that changes into a hairpin-like structure upon binding Hg(2+) and PhHg(+) ions. As a result, the fluorescence of th...
متن کاملSelective ratiometric detection of mercury(II) ions in water with an acridizinium-based fluorescent probe.
The integration of a selective Hg2+ receptor unit, 1,4-dioxa-7,13-dithia-10-azacyclopentadecane, into the 9-aminoacridizinium fluorophore provides a fluorescent probe which allows a selective ratiometric detection of Hg2+ in water.
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2009
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.117-a60a