Glutathione-capped Mn-doped ZnS quantum dots as a room-temperature phosphorescence sensor for the detection of Pb(2+) ions.

The room-temperature phosphorescence (RTP) of glutathione-capped Mn-doped ZnS quantum dots (GSH-Mn-ZnS QDs) was effectively quenched by the addition of Pb(2+). A simple and sensitive RTP sensor for Pb(2+) detection based on the quenching effect was developed. Under the optimal conditions, good linear correlations were obtained for Pb(2+) over a concentration range from 1.0 to 100μg·L(-1), and the detection limit was 0.45μg·L(-1). The established method has been successfully applied for the determination of Pb(2+) in real water samples without complicated sample pretreatment with the recoveries in the range of 95.4%-104.0%.

[1]  D. Jang,et al.  Formation and Distinctive Decay Times of Surface- and Lattice-Bound Mn2+ Impurity Luminescence in ZnS Nanoparticles , 2001 .

[2]  Manuela F. Frasco,et al.  Semiconductor Quantum Dots in Chemical Sensors and Biosensors , 2009, Sensors.

[3]  Xiu‐Ping Yan,et al.  Doped quantum dots for chemo/biosensing and bioimaging. , 2013, Chemical Society reviews.

[4]  Zhefeng Fan,et al.  Mn-doped ZnS quantum dots for the room-temperature phosphorescence detection of raceanisodamine hydrochloride and atropine sulfate in biological fluids. , 2012, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

[5]  Xiu‐Ping Yan,et al.  Exploring Mn-doped ZnS quantum dots for the room-temperature phosphorescence detection of enoxacin in biological fluids. , 2008, Analytical chemistry.

[6]  A. Islam,et al.  Graphene oxide sheets immobilized polystyrene for column preconcentration and sensitive determination of lead by flame atomic absorption spectrometry. , 2014, ACS applied materials & interfaces.

[7]  Heyou Han,et al.  A novel method for the determination of Pb2+ based on the quenching of the fluorescence of CdTe quantum dots , 2008 .

[8]  Hong Wang,et al.  The influence of ligands on the preparation and optical properties of water-soluble CdTe quantum dots , 2009 .

[9]  C. Dong,et al.  Sensitive and selective detection of L-tryptophan using Mn–ZnS QDs as the ratiometric emission probe , 2014 .

[10]  W. Bian,et al.  Phosphorescence detection of hydrochlorothiazide using Mn-doped ZnS quantum dots , 2013 .

[11]  He-Fang Wang,et al.  Mn-doped ZnS quantum dot imbedded two-fragment imprinting silica for enhanced room temperature phosphorescence probing of domoic acid. , 2013, Analytical chemistry.

[12]  Wensheng Yang,et al.  Synthesis of water-soluble ZnS : Mn2+ nanocrystals by using mercaptopropionic acid as stabilizer , 2003 .

[13]  Jackie Y Ying,et al.  Ultrasensitive Pb2+ detection by glutathione-capped quantum dots. , 2007, Analytical chemistry.

[14]  Xiu‐Ping Yan,et al.  Surface molecular imprinting on Mn-doped ZnS quantum dots for room-temperature phosphorescence optosensing of pentachlorophenol in water. , 2009, Analytical chemistry.

[15]  W. Li,et al.  Microwave-assisted aqueous synthesis of Mn-doped ZnS quantum dots and their room-temperature phosphorescence detection of indapamide , 2014 .

[16]  Xiu‐Ping Yan,et al.  Ascorbic acid induced enhancement of room temperature phosphorescence of sodium tripolyphosphate-capped Mn-Doped ZnS quantum dots: mechanism and bioprobe applications. , 2010, Chemistry.

[17]  A. Ivaska,et al.  Solid-contact ion-selective electrodes with highly selective thioamide derivatives of p-tert-butylcalix[4]arene for the determination of lead(II) in environmental samples. , 2013, Analytical chemistry.

[18]  Wei Tao Huang,et al.  CTAB-capped Mn-doped ZnS quantum dots and label-free aptamer for room-temperature phosphorescence detection of mercury ions. , 2012, The Analyst.

[19]  Paresh Chandra Ray,et al.  Gold nanoparticle-based simple colorimetric and ultrasensitive dynamic light scattering assay for the selective detection of Pb(II) from paints, plastics, and water samples. , 2011, ACS applied materials & interfaces.

[20]  Xiu‐Ping Yan,et al.  Room-temperature phosphorescent discrimination of catechol from resorcinol and hydroquinone based on sodium tripolyphosphate capped Mn-doped ZnS quantum dots. , 2013, Analytical chemistry.

[21]  X. Hou,et al.  Semicondutor quantum dots-based metal ion probes. , 2014, Nanoscale.

[22]  Tingting Wang,et al.  Colorimetric detection of Pb2+ using glutathione functionalized gold nanoparticles. , 2010, ACS applied materials & interfaces.

[23]  Xiu‐Ping Yan,et al.  Conjugation of glucose oxidase onto Mn-doped ZnS quantum dots for phosphorescent sensing of glucose in biological fluids. , 2010, Analytical chemistry.

[24]  R. Leblanc,et al.  Peptide-coated CdS quantum dots for the optical detection of copper(II) and silver(I). , 2003, Chemical communications.

[25]  He-Fang Wang,et al.  Aminophenylboronic-acid-conjugated polyacrylic acid-Mn-doped ZnS quantum dot for highly sensitive discrimination of glycoproteins. , 2014, Analytical chemistry.

[26]  T. Bora,et al.  Determination of trace elements in illicit spice samples by using ICP-MS , 2015 .

[27]  Xin Wang,et al.  Ultrasensitive Pb2+ detection based on fluorescence resonance energy transfer (FRET) between quantum dots and gold nanoparticles. , 2009, The Analyst.

[28]  Feng Feng,et al.  A label-free fluorescent sensor for Pb2+ based on G-quadruplex and graphene oxide , 2014 .

[29]  Z. Rosenzweig,et al.  Luminescent CdS quantum dots as selective ion probes. , 2002, Analytical chemistry.

[30]  Martin M. F. Choi,et al.  Phosphorescence detection of L-ascorbic acid with surface-attached N-acetyl-L-cysteine and L-cysteine Mn doped ZnS quantum dots. , 2013, Talanta.

[31]  Vassili Karanassios,et al.  Taking part of the lab to the sample: On-site electrodeposition of Pb followed by measurement in a lab using electrothermal, near-torch vaporization sample introduction and inductively coupled plasma-atomic emission spectrometry , 2013 .

[32]  X. Hou,et al.  Analyte-activable probe for protease based on cytochrome C-capped Mn: ZnS quantum dots. , 2014, Analytical chemistry.

[33]  Itamar Willner,et al.  Optical molecular sensing with semiconductor quantum dots (QDs). , 2012, Chemical Society reviews.

[34]  Zhefeng Fan,et al.  Highly selective manganese-doped zinc sulfide quantum dots based label free phosphorescent sensor for phosphopeptides in presence of zirconium (IV). , 2015, Biosensors & bioelectronics.

[35]  Xiu‐Ping Yan,et al.  A multidimensional sensing device for the discrimination of proteins based on manganese-doped ZnS quantum dots. , 2011, Angewandte Chemie.

[36]  Waleed E. Mahmoud,et al.  Enhancement of CdSe quantum dots luminescence by calcium ions , 2013 .

[37]  J. Ayuso-Mateos,et al.  Estimating the global burden of disease of mild mental retardation and cardiovascular diseases from environmental lead exposure. , 2004, Environmental research.

[38]  Chun-Yen Chen,et al.  Potassium ion recognition by 15-crown-5 functionalized CdSe/ZnS quantum dots in H2O. , 2006, Chemical communications.