A selective fluorescence probe for mercury ion based on the fluorescence quenching of terbium(III)-doped cadmium sulfide composite nanoparticles

Fu, Jie; Wang, Lun; Chen, Hongqi; Liu, Bo; Zhou, Cailing; Chen, Jingguo

doi:10.1016/j.saa.2010.06.038

Cited by 38 publications

(19 citation statements)

References 34 publications

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“…14 It is well known that Hg 2+ ions have strong affinity towards sulfur ligands and sulfur anions (S 2À ) due to so-so interactions. 19,20 Hence, CuS nanostructures (NSs) with an interesting inherent cation exchange nature, unique optical properties and high affinity for S 2À ions, can be exploited to develop a selective, sensitive and rapid metal ion sensing platform.…”

Section: Introductionmentioning

confidence: 99%

Ultrasmall aqueous starch-capped CuS quantum dots with tunable localized surface plasmon resonance and composition for the selective and sensitive detection of mercury(ii) ions

2020

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Section: Introductionmentioning

confidence: 99%

Ultrasmall aqueous starch-capped CuS quantum dots with tunable localized surface plasmon resonance and composition for the selective and sensitive detection of mercury(ii) ions

2020

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“…Based on this novel feature, QDs have been utilized for the construction of sensors to detect specific agents, such as inorganic ions, organic compounds and biomolecules . It has been successfully established that some ions such as Zn 2+ , Cu 2+ and Hg 2+ can be determined by the PL quenching of CdS QDs, with detection limits of 0.8, 0.1 and 0.1 nmol/L at ranges up to 20 μM, 1300 μM and 550 nmol/L, respectively . Sensing systems based on the PL quenching of QDs developed via the modification of QD surfaces with certain ligands .…”

Section: Introductionmentioning

confidence: 99%

Study of fluorescence quenching of mercaptosuccinic acid‐capped CdS quantum dots in the presence of some heavy metal ions and its application to Hg(II) ion determination

Hosseini

Pirouz

2014

Luminescence

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In this study, CdS quantum dots (QDs) capped with mercaptosuccinic acid (MSA) were prepared in one step. The size, shape, component and spectral properties of MSA-capped CdS QDs were characterized by transmission electron microscopy (TEM), photoluminescence (PL) and infrared (IR) spectrometry. The results showed that the prepared QDs with an average diameter of 6 nm have favorable fluorescence, which is greatly influenced by the pH of the environment. The interaction of some heavy metal ions including Ag + , Hg 2+ , Cu 2+ , Ni 2+ and Co 2+ with MSA-capped CdS QDs was investigated in different buffering pH media. Based on the fluorescence quenching of the QDs in the presence of each of the metal ions, the feasibility of their determinations was examined according to the Stern-Volmer equation. The investigations showed that Hg(II) ions can be determined in the presence of many co-existing metal ions at a buffering pH of 5. This method was satisfactorily applied to the measurement of Hg(II) ions in some environmental samples.

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“…Nowadays, different Cd-chalcogenide QDs (CdS, CdSe, CdTe) coated with thiol-containing organic molecules such as L-cysteine (L-Cys), mercaptoacetic acid (MAA), mercaptopronionic acid (MPA), denatured bovine serum albumin (dBSA), cysteamine (CA) and thioglycolic acid (TGA) were synthesized and used as fluorescent probes to detect Hg 2+ [67][68][69][70][71][72]. Besides the commonly used Cd-chalcogenide QDs, their derivatives such as MAA-capped CdS/ ZnS core-shell QDs and QDs doped with rare earth ions (CdS:Eu QDs and CdS:Tb QDs capped with glutathione (GSH)) were also utilized for Hg 2+ analysis [73][74][75]. The above mentioned sensing systems were all based on the fluorescence quenching of QDs by Hg 2+ .…”

Section: Reviewsmentioning

confidence: 99%

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Duan

Zhan

2015

Sci. China Mater.

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Mercuric ion (Hg 2+ ), released from both natural and industrial sources, has severe adverse effects on human health and the environment even at very low concentrations. It is very important to develop a rapid and economical method for the detection of Hg 2+ with high sensitivity and selectivity. Nanomaterials with unique size and shape-dependent optical properties are attractive sensing materials. The application of nanomaterials to design optical sensors for Hg 2+ provides a powerful method for the trace detection of Hg 2+ in the environment, because these optical sensors are simple, rapidly responsive, cost-effective and highly sensitive. This review summarizes the recent advances on the development of optical assays for Hg 2+ in aqueous solution by using functionalized nanomaterials (including noble metal nanoparticles, fluorescent metal nanoclusters, semiconductor quantum dots and carbon nanodots). Detection strategies based on the Hg 2+ -induced changes in spectral absorbance, fluorescence intensity and surface-enhanced Raman scattering signals were described. And the design principles for each optical assay were presented. In addition, the future challenge and the prospect of the development of nanomaterial optical sensors for Hg 2+ detection were also discussed.

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A selective fluorescence probe for mercury ion based on the fluorescence quenching of terbium(III)-doped cadmium sulfide composite nanoparticles

Cited by 38 publications

References 34 publications

Ultrasmall aqueous starch-capped CuS quantum dots with tunable localized surface plasmon resonance and composition for the selective and sensitive detection of mercury(ii) ions

Ultrasmall aqueous starch-capped CuS quantum dots with tunable localized surface plasmon resonance and composition for the selective and sensitive detection of mercury(ii) ions

Study of fluorescence quenching of mercaptosuccinic acid‐capped CdS quantum dots in the presence of some heavy metal ions and its application to Hg(II) ion determination

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

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