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Sasikumar T, Ilanchelian M. Facile preparation of dihydrolipoic acid-stabilized red-emitting silver nanoclusters as a sensitive fluorometric probe for sulfide ions detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123034. [PMID: 37379714 DOI: 10.1016/j.saa.2023.123034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/10/2023] [Accepted: 06/16/2023] [Indexed: 06/30/2023]
Abstract
In this work, we report a smartphone-integrated paper-based sensor for the determination of sulfide ions (S2-) using water-soluble dihydrolipoic acid stabilized silver nanoclusters (DHLA-AgNCs) as a nanoprobe. The optical properties of red emitting fluorescent DHLA-AgNCs was confirmed by UV-visible, steady state flourometric spectroscopic studies. The HR-TEM analysis revealed that the morphology of DHLA-AgNCs was quasi spherical with a grain size of ∼ 5.2 nm. The DHLA-AgNCs exhibited bright red luminescence with strong emission band centered at 650 nm upon the excitation at 420 nm. The excellent fluorescence property of DHLA-AgNCs was further utilized for fluorometric determination of S2- ions. The DHLA-AgNCs can be effectively quenched by increasing concentration of S2- ions owing to the formation of Ag2S complex. The DHLA-AgNCs probe could detect S2- ions preferentially even in the presence of other possible interfering anions with a limit of detection of 32.71 nM. In addition, the proposed technique was effectively used to detect S2- ions in environmental water samples such as tap and drinking water. The detect S2- ions detection was assay and showed good agree compared with the conventional methylene blue approach and showed comparable results. Moreover, a smartphone-paper-based detection assay was developed using the DHLA-AgNCs probe for highly selective and sensitive determination of S2- ions.
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Affiliation(s)
- Thangarasu Sasikumar
- Department of Chemistry, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
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Bui TP, Nguyen TP. Time‐Dependent Growth Rates of TGA‐Capped ZnS Nanocrystals as a Synthetic Formula for Ligand‐Capped Quantum Dots. CRYSTAL RESEARCH AND TECHNOLOGY 2022. [DOI: 10.1002/crat.202200074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tan Phuc Bui
- Faculty of Applied Sciences HCMC University of Technology and Education No. 1 Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District Ho Chi Minh City 700000 Vietnam
| | - Thanh Phuong Nguyen
- Faculty of Graphic Arts and Media HCMC University of Technology and Education No. 1 Vo Van Ngan Street, Linh Chieu Ward, Thu Duc District Ho Chi Minh City 700000 Vietnam
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Comparative Studies of Blue-Emitting Zinc Selenide Nanocrystals Doped with Ag, Cu, and Mg towards Medical Applications. CRYSTALS 2022. [DOI: 10.3390/cryst12050625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Blue-emitting Ag(+)-, Cu(2+)-, and Mg(2+)-doped ZnSe nanoparticles (NPs) were successfully synthesized at 80 °C by the precipitation method by using mercaptopropionic acid (MPA) as a stabilizer. UV–visible and photoluminescence (PL) studies were applied to investigate their physicochemical properties. Their structural properties were confirmed by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and transmission electron microscopy (TEM). The size of the ZnSe: X-capped MPA showed a strong relationship with dopant metals. The diameters of the Mg-doped ZnSe and the Cu-doped ZnSe were 22–24 nm, while the Ag-doped ZnSe was halved, at about 13 nm. The photoluminescence was within a wavelength range of 400–550 nm. In addition, the PL intensities, as well as the photoluminescence quantum yields, were in the order of the decreasing ionic radii of the dopant metals (ZnSe:Ag < ZnSe:Mg < ZnSe:Cu). Furthermore, through the interaction with lysine, the PL intensity of the ZnSe:X was changed. Interestingly, the capacity of the ZnSe:Mg for lysine was significantly higher than that of other dopant metals. Moreover, the toxicity of the ZnSe:Mg was relatively insignificant toward the hMSCs (about 80% cell viability at 320 ppm), compared to the transition-metal dopant. Therefore, the ZnSe:Mg material could have great potential for bioapplications.
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Abstract
Flexible luminescent thin-film sensors have attracted widespread attention for their potential applications in biomedical detection, structural health detection, and smart wear. In this work, PVDF/ZnS:Mn flexible luminescent thin-film sensors were fabricated using electro-assisted 3D-printing techniques. The interaction and influence of PVDF thin film and ZnS:Mn were studied. The mechanism through which the PVDF matrix and ZnS:Mn particles affects the luminescence of the flexible thin-film sensor were investigated. The results demonstrate that the ZnS:Mn luminescent particles in PVDF thin films can promote the formation of the β-phase in the PVDF thin films. The mechano-luminesce spectra of the PVDF/ZnS:Mn composite thin film is consistent with the photoluminescence spectra, both of which exhibit yellow light with a wavelength of 580 nm. Mn entering the ZnS lattice increases the number of effective luminescent centres. Because of the double piezoelectric field, when the Mn content of ZnS:Mn is 4 at.% and PVDF films contain 3 wt.% ZnS:Mn particles, the PVDF/ZnS:Mn flexible thin-film sensors demonstrate excellent mechano-luminescence performance.
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Synthesis of Magnetic Ions-Doped QDs Synthesized Via a Facial Aqueous Solution Method for Optical/MR Dual-Modality Imaging Applications. J Fluoresc 2021; 31:897-906. [PMID: 33772679 DOI: 10.1007/s10895-021-02720-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/17/2021] [Indexed: 10/21/2022]
Abstract
This research reports the preparation and examination of Cadmium Telluride (CdTe) Quantum Dots and doping CdTe QDs with Europium (Eu), Gadolinium (Gd), and Manganese (Mn) prepared in aqueous solution using TGA as a capping agent. Magnetic QDs (MQDs) are important agents for fluorescence (FL) /magnetic resonance (MR) dual-modal imaging due to their excellent optical and magnetic properties. Herein, the chemical bonds, structural, fluorescence, and magnetized properties of CdTe QDs and effect of Mn, Eu, and Gd ions doping on their properties were examined by X-ray powder diffraction (XRD), high-resolution transmission electron microscopy (HRTM), Energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR), photoluminescence spectroscopy (PL), Ultraviolet-visible spectroscopy (UV-Vis), and vibrating sample magnetometer measurements (VSM). Almost similar X-Ray patterns with the absence/presence of ions for all samples with cubic crystal structures were obtained which indicated that the introduction of ions into CdTe QDs could not alter the cubic primary structure of CdTe. Monodisperse size distributed with seemingly-spherical shapes, and also, the estimated mean diameters about 3 and less than 3 nm of QDs were obtained. The effect of X ions injection on the fluorescence and UV-Vis properties of the QDs were also investigated. Optical studies showed the decreases in bandgap as the heating time increases during synthesis while undergoing red-shift. The CdTe nanocrystals with high PL quantum yields were achieved in more than 6 h of heating. Also, investigations have shown the quenching of fluorescence by the existence of ions in the CdTe QDs. Then, all the ions doped QDs exhibited ferromagnetic behavior at room temperature by a vibrating sample magnetometer which confirmed the success of the presentation of ions into CdTe cubic crystal structure. They can have been employed as a suitable contrast agent successfully for biological applications such as FL/MR dual-modal imaging.
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Ghosh T, Mishra S. A natural cyanobacterial protein C-phycoerythrin as an HS - selective optical probe in aqueous systems. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118469. [PMID: 32450537 DOI: 10.1016/j.saa.2020.118469] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/07/2020] [Accepted: 05/09/2020] [Indexed: 06/11/2023]
Abstract
A naturally fluorescent cyanobacterial protein C-phycoerythrin (CPE) was investigated as a fluorescent probe for biologically and environmentally important hydrosulphide (HS-) ion. It was selective for HS amongst a large anion screen and the optical response was rapid. Sequential UV-visible titration showed considerable peak shift and attenuation with increasing [HS-] while fluorescence titration proved that HS- quenched CPE fluorescence in a concentration dependent manner. The linear response range was 0-2 mM HS- while the Stern Volmer curve was non-linear and the limit of detection was 185.12 μM. Except bicarbonate and glycine, no anion or biomolecule interfered with the detection even at 10 times the concentration of HS-. It was also free of influences from other sulphur forms like sulphite, sulphate and thiosulphate. CPE reliably detected HS- in freshwater and effluent samples, though some under- and over - estimation was evident. The % recovery ranged from ~96 to 105% (RSD ~ 0.035-0.188%). FTIR analysis showed significant changes in the amide I and II regions of CPE, along with minor modifications in the amide III region as well, showing that HS- was able to influence the protein secondary structure at higher concentrations.
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Affiliation(s)
- Tonmoy Ghosh
- Applied Phycology and Biotechnology Division, CSIR - Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Sandhya Mishra
- Applied Phycology and Biotechnology Division, CSIR - Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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Patel J, Jain B, Singh AK, Susan MABH, Jean-Paul L. Mn-Doped ZnS Quantum dots–An Effective Nanoscale Sensor. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104755] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Wang Y, Weng W, Xu H, Luo Y, Guo D, Li D, Li D. Negatively charged molybdate mediated nitrogen-doped graphene quantum dots as a fluorescence turn on probe for phosphate ion in aqueous media and living cells. Anal Chim Acta 2019; 1080:196-205. [DOI: 10.1016/j.aca.2019.07.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/04/2019] [Accepted: 07/10/2019] [Indexed: 01/09/2023]
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Anion binding ability and cytotoxicity of a selective colorimetric chemosensor for H2S based on Zn(Ⅱ) complex. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118994] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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10
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Nazari O, Gouran Orimi P, Chaichi MJ, Mohseni M. Synthesis and characterization of cadmium selenide quantum dots doped by europium and investigation of their chemiluminescence properties and antibacterial activities. LUMINESCENCE 2019; 34:394-401. [PMID: 30924259 DOI: 10.1002/bio.3631] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 03/02/2019] [Accepted: 03/04/2019] [Indexed: 11/08/2022]
Abstract
Nanoparticles of cadmium selenide (CdSe) doped with europium, were synthesized as stabilizing agents using thioglycolic acid ligand. This method is based on the enhancing effect of CdSe quantum dots (QDs) doped with europium on chemiluminescence (CL) emission. This emission was generated by mixing CdSe QDs with manganese (II), iron (II) and chrome (II) sulfates as catalysts in the presence of hydrogen peroxide (H2 O2 ). The structural characteristics and morphology of these nanoparticles were investigated by scanning electron microscopy, Fourier transform infrared spectroscopy, ultraviolet-visible absorption spectroscopy, X-ray pattern and dynamic light scattering methods. The CdSe QDs doped with europium were used as the sensitizer in a luminol-hydrogen peroxide CL system. The sensitized CdSe QDs were analyzed for antibacterial activity against Gram-positive or Gram-negative bacteria. The results showed that the CdSe QDs are effective against all the studied bacteria, effectiveness was especially higher for Bacillus subtilis.
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Affiliation(s)
- O Nazari
- Department of Inorganic Chemistry, University of Mazandaran, Babolsar, Iran
| | - P Gouran Orimi
- Department of Inorganic Chemistry, University of Mazandaran, Babolsar, Iran
| | - M J Chaichi
- Department of Inorganic Chemistry, University of Mazandaran, Babolsar, Iran
| | - M Mohseni
- Department of Molecular and Cell Biology, University of Mazandaran, Babolsar, Iran
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Venkateswarlu S, Govindaraju S, Sangubotla R, Kim J, Lee MH, Yun K. Biosynthesized Highly Stable Au/C Nanodots: Ideal Probes for the Selective and Sensitive Detection of Hg 2+ Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E245. [PMID: 30759765 PMCID: PMC6409943 DOI: 10.3390/nano9020245] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/03/2019] [Accepted: 02/07/2019] [Indexed: 01/14/2023]
Abstract
The enormous ongoing industrial development has caused serious water pollution which has become a major crisis, particularly in developing countries. Among the various water pollutants, non-biodegradable heavy metal ions are the most prevalent. Thus, trace-level detection of these metal ions using a simple technique is essential. To address this issue, we have developed a fluorescent probe of Au/C nanodots (GCNDs-gold carbon nanodots) using an eco-friendly method based on an extract from waste onion leaves (Allium cepa-red onions). The leaves are rich in many flavonoids, playing a vital role in the formation of GCNDs. Transmission electron microscopy (TEM) and Scanning transmission electron microscopy-Energy-dispersive X-ray spectroscopy (STEM-EDS) elemental mapping clearly indicated that the newly synthesized materials are approximately 2 nm in size. The resulting GCNDs exhibited a strong orange fluorescence with excitation at 380 nm and emission at 610 nm. The GCNDs were applied as a fluorescent probe for the detection of Hg2+ ions. They can detect ultra-trace concentrations of Hg2+ with a detection limit of 1.3 nM. The X-ray photoelectron spectroscopy results facilitated the identification of a clear detection mechanism. We also used the new probe on a real river water sample. The newly developed sensor is highly stable with a strong fluorescent property and can be used for various applications such as in catalysis and biomedicine.
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Affiliation(s)
- Sada Venkateswarlu
- Department of Nanochemistry, Gachon University, Gyeonggi-do 13120, Korea.
| | - Saravanan Govindaraju
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Korea.
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
| | - Roopkumar Sangubotla
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Jongsung Kim
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam Daero, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Korea.
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Suárez PL, García-Cortés M, Fernández-Argüelles MT, Encinar JR, Valledor M, Ferrero FJ, Campo JC, Costa-Fernández JM. Functionalized phosphorescent nanoparticles in (bio)chemical sensing and imaging – A review. Anal Chim Acta 2019; 1046:16-31. [DOI: 10.1016/j.aca.2018.08.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/03/2018] [Accepted: 08/06/2018] [Indexed: 01/19/2023]
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Design, synthesis, crystal structure and cytotoxicity studies of colorimetric fluorescent “OFF-ON” probes for rapid detection of hydrogen sulfide based on Cu(II) complex. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2018.10.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wang X, Yang X, Wang N, Lv J, Wang H, Choi MMF, Bian W. Graphitic carbon nitride quantum dots as an "off-on" fluorescent switch for determination of mercury(II) and sulfide. Mikrochim Acta 2018; 185:471. [PMID: 30238322 DOI: 10.1007/s00604-018-2994-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 09/08/2018] [Indexed: 11/24/2022]
Abstract
A rapid method has been developed for the determination of Hg(II) and sulfide by using graphitic carbon nitride quantum dots (g-CNQDs) as a fluorescent probe. The interaction between Hg(II) and g-CNQDs leads to the quenching of the blue g-CNQD fluorescence (with excitation/emission peaks at 390/450 nm). However, the fluorescence can be recovered after addition of sulfide such that the "turn-off" state is switched back to the "turn-on" state. The g-CNQDs were fully characterized by transmission electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV-vis absorption and fluorescence spectroscopy. Under the optimal experimental conditions, this probe is highly selective and sensitive to Hg(II). The linear response to Hg(II) extends from 0.20 to 21 μM with a detection limit of 3.3 nM. In addition, sulfide can be detected via the recovery of fluorescence. The linear response range for sulfide species is from 8.0 to 45 μM with a detection limit of 22 nM. The mechanism of the "turn-off-on" scheme is discussed. The methods have been applied to the analysis of spiked tap water, lake water and wastewater samples. Graphical abstract Schematic of an off-on fluorescent probe for mercury(II). The fluorescence of graphitic carbon nitride quantum dots (g-CNQDs) is quenched by Hg2+ but is recovered after reacting with S2- as it can combine with Hg2+ on the surface of g-CNQDs.
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Affiliation(s)
- Xuan Wang
- Shanxi Medical University, Taiyuan, 030001, China
| | - Xuefang Yang
- Shanxi Medical University, Taiyuan, 030001, China
| | - Ning Wang
- Shanxi Medical University, Taiyuan, 030001, China
| | - Junjie Lv
- Shanxi Medical University, Taiyuan, 030001, China
| | | | - Martin M F Choi
- Bristol Chinese Christian Church, c/o Tyndale Baptist Church, 137-139 Whiteladies Road, Bristol, BS8 2QG, UK
| | - Wei Bian
- Shanxi Medical University, Taiyuan, 030001, China.
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Ostarcevic ER, Jacangelo J, Gray SR, Cran MJ. Current and Emerging Techniques for High-Pressure Membrane Integrity Testing. MEMBRANES 2018; 8:E60. [PMID: 30096937 PMCID: PMC6161006 DOI: 10.3390/membranes8030060] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 01/28/2023]
Abstract
Ideally, pressure driven membrane processes used in wastewater treatment such as reverse osmosis and nanofiltration should provide a complete physical barrier to the passage of pathogens such as enteric viruses. In reality, manufacturing imperfections combined with membrane ageing and damage can result in breaches as small as 20 to 30 nm in diameter, sufficient to allow enteric viruses to contaminate the treated water and compromise public health. In addition to continuous monitoring, frequent demonstration of the integrity of membranes is required to provide assurance that the barrier to the passage of such contaminants is intact. Existing membrane integrity monitoring systems, however, are limited and health regulators typically credit high-pressure membrane systems with only 2 log10 virus rejection, well below their capability. A reliable real-time method that can recognize the true rejection potential of membrane systems greater than 4 log10 has not yet been established. This review provides a critical evaluation of the current methods of integrity monitoring and identifies novel approaches that have the potential to provide accurate, representative virus removal efficiency estimates.
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Affiliation(s)
- Eddy R Ostarcevic
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee 3030, Australia.
| | | | - Stephen R Gray
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee 3030, Australia.
| | - Marlene J Cran
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee 3030, Australia.
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Highly selective fluorescent probe based on new coordinated cationic polyvinylpyrrolidone for hydrogen sulfide sensing in aqueous solution. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sim Y, Hwang CS. Application of the Manganese (II) Ion Doped Zinc Sulfide Nanocrystals for Dual Detection of Cyanide and Nitrite Ions in Aqueous Solution. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yujin Sim
- Department of Chemistry; Dankook University; Chonan 31116 South Korea
| | - Cheong-Soo Hwang
- Department of Chemistry; Dankook University; Chonan 31116 South Korea
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Fluorescence-based CdTe nanosensor for sensitive detection of cytochrome C. Biosens Bioelectron 2017; 98:415-420. [PMID: 28711028 DOI: 10.1016/j.bios.2017.07.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 06/21/2017] [Accepted: 07/08/2017] [Indexed: 11/21/2022]
Abstract
Cytochrome c (Cyt c) is commonly used as intrinsic biomarker for several characteristics of the cell such as respiration, energy level and apoptosis. In the present study a simple colorimetric sensor should be developed and tested for the real-time detection of Cyt c in living cells. We synthesized cadmium telluride quantum dots (CdTe QDs) capped with thioglycolic acid (TGA) as a fluorometric Cyt c nanosensor. The synthesized TGA/CdTe QDs nanosensor was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and absorption as well as fluorescence spectrophotometry. We investigated the developed TGA/CdTe QDs sensor with regard to its applicability in the fluorometric detection of Cyt c. Results showed that the TGA/CdTe QDs could be used as a sensitive fluorescence probe for the quantification of different concentrations of Cyt c ranging from 0.5 - 2.5μM. Increased binding of QDs to Cyt c results in decreasing fluorescence. The fluorescence of the QDs is inversely correlated to the Cyt c concentration. Based on these data, a standard curve up to 2.5μM Cyt c was established. Moreover, the developed nanosensor was applied in different concentrations on primary human dermal fibroblasts. Results showed that TGA/CdTe QDs were taken up by cells and could be visualized by fluorescence microscopy. Quantification of Cyt c within living cells via QDs is, however, influenced by various factors such as cell damage, QD aggregation or the level of reactive oxygen species, which have to be taken into account.
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Shang X, Ren K, Li J, Li W, Fu J, Zhang X, Zhang J. Multi-properties of a Cu(II) complex: Crystal structure, anion binding ability, bioactivity and cell cytotoxicity. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.10.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ren K, Shang X, Chen Y, Zhang X, Fu J, Zhao P, Zhang J. Synthesis and crystal structure of a highly selective colorimetric and fluorometric sensor for hydrogen sulfide. LUMINESCENCE 2016; 32:765-771. [DOI: 10.1002/bio.3248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/07/2016] [Accepted: 10/08/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Kui Ren
- Key Laboratory of Medical Molecular Probes, Department of Chemistry; Xinxiang Medical University; Xinxiang China
| | - Xuefang Shang
- Key Laboratory of Medical Molecular Probes, Department of Chemistry; Xinxiang Medical University; Xinxiang China
| | - Yanmei Chen
- Key Laboratory of Medical Molecular Probes, Department of Chemistry; Xinxiang Medical University; Xinxiang China
| | - Xueli Zhang
- School of Pharmacy; Xinxiang Medical University; Xinxiang China
| | - Jiajia Fu
- School of Pharmacy; Xinxiang Medical University; Xinxiang China
| | - Peipei Zhao
- School of Pharmacy; Xinxiang Medical University; Xinxiang China
| | - Jinlian Zhang
- School of Pharmacy; Xinxiang Medical University; Xinxiang China
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Li X, Chen L. Fluorescence Probe Based on an Amino-Functionalized Fluorescent Magnetic Nanocomposite for Detection of Folic Acid in Serum. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31832-31840. [PMID: 27796090 DOI: 10.1021/acsami.6b10163] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new fluorescence probe constructed with a multifunctional nanocomposite, Fe3O4-ZnS:Mn2+/SiO2-NH2, was successfully synthesized and then used to detect folic acid in real serum samples. The nanocomposite was characterized by fluorescence spectroscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, and physical property measurement system. With the addition of analyte, the Fe3O4-ZnS:Mn2+/SiO2-NH2 composite and folic acid formed a new complex because cross-linking of the amino and carboxyl groups participated in the condensation reaction. Then, the energy of quantum dots was transferred to the complex and led to quenching of the fluorescence. Moreover, the fluorescence intensity decreased significantly as the concentration of folic acid increased, and the fluorescence quenching ratio F0/F was related to the folic acid concentration in the range from 0.1 to 5 μg mL-1. This method was used for detecting folic acid in real serum samples and gave recoveries in the range of 89.0%-96.0%, with relative standard deviations of 1.2%-3.9%. The detection limit was 9.6 ng mL-1 (S/N = 3). These satisfactory and simple results showed the great potential of this fluorescence probe in the field of pharmaceutical analysis.
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Affiliation(s)
- Xiaowan Li
- Department of Chemistry, College of Science, Northeast Forestry University , 26 Hexing Road, Harbin 150040, China
| | - Ligang Chen
- Department of Chemistry, College of Science, Northeast Forestry University , 26 Hexing Road, Harbin 150040, China
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A convenient “turn on-off” phosphorescent nanosensor for detection of biotin based on quantum dots/CTAB. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6219-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lou Y, Zhao Y, Zhu JJ. Ultrasensitive optical detection of anions by quantum dots. NANOSCALE HORIZONS 2016; 1:125-134. [PMID: 32260634 DOI: 10.1039/c5nh00039d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quantum dots (QDs) have received great interest for diverse applications over the past few decades due to their unique photophysical properties like their tunable band gap, facile solution processability and versatile surface functionalization with different ligands. Quantum dot based optical analysis techniques with high sensitivity and selectivity have been developed to detect anions in aqueous solution for environmental monitoring, medicinal diagnostics, and the analysis of biological samples and industrial processes. Here we review the latest research progress of semiconductor QDs for sensing of anions in aqueous solution or in vivo, and discuss the photophysical mechanisms and outlook for the potential development in QD based optical sensing for anions.
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Affiliation(s)
- Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
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24
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Sharma R, Pal M, Mishra KK. Cu(II) catalyzed oxidation of mercaptoacetic acid by methylene blue in acidic medium: Influence of solvent and morphology. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1085039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ranjana Sharma
- Department of Chemistry, Rani Durgavati University, Jabalpur, India
| | - Mahender Pal
- Department of Chemistry, Rani Durgavati University, Jabalpur, India
| | - K. K. Mishra
- Department of Chemistry, Rani Durgavati University, Jabalpur, India
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25
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Na W, Liu X, Hu T, Su X. Highly sensitive fluorescent determination of sulfide using BSA-capped CdS quantum dots. NEW J CHEM 2016. [DOI: 10.1039/c5nj03117f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Schematic illustration of the BSA-CdS QD-based sensing system for sulfide detection.
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Affiliation(s)
- Weidan Na
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Xiaotong Liu
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Tianyu Hu
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
| | - Xingguang Su
- Department of Analytical Chemistry
- College of Chemistry
- Jilin University
- Changchun
- China
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26
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Ren K, Shang X, Fu J, Zhao P, Zhang J. Copper complex based on 2-(phenylimino-methyl)-phenol as a high selective fluoresencent probe for hydrogen sulfide. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.11.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Liu J, Liu W, Ji Q, Wang B, Xu M. Ultrasensitive detection of sulfide ions through interactions between sulfide ions and Au(iii) quenching the fluorescence of chitosan microspheres functionalized with rhodamine B and modified with Au(iii). RSC Adv 2016. [DOI: 10.1039/c6ra04407g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A rapid and facile fluorescence probe for detecting sulfide ions was developed. The probe can be completely regenerated and was easily separated. The approach described here is a new and convenient way of developing reusable fluorescence probes.
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Affiliation(s)
- Jinshui Liu
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo/Biosensing
- Anhui Laboratory of Molecule-based Materials
| | - Wenxiu Liu
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo/Biosensing
- Anhui Laboratory of Molecule-based Materials
| | - Qianqian Ji
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo/Biosensing
- Anhui Laboratory of Molecule-based Materials
| | - Bin Wang
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo/Biosensing
- Anhui Laboratory of Molecule-based Materials
| | - Meijiao Xu
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo/Biosensing
- Anhui Laboratory of Molecule-based Materials
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28
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Azizi SN, Chaichi MJ, Shakeri P, Bekhradnia A. Quantum dots and ionic liquid-sensitized effect as an efficient and green catalyst for the sensitive determination of glucose. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 146:277-285. [PMID: 25819316 DOI: 10.1016/j.saa.2015.02.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 01/15/2015] [Accepted: 02/16/2015] [Indexed: 06/04/2023]
Abstract
A novel fluorescence (FL) method using water-soluble CdSe quantum dots (QDs) is proposed for the fluorometric determination of hydrogen peroxide and glucose. Water-soluble CdSe QDs were synthesized by using thioglycolic acid as stabilizer in aqueous solutions. The nanoparticles were structurally and optically characterized by X-ray powder diffraction (XRD), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), UV-Vis absorption spectroscopy, photoluminescence (PL) emission spectroscopy and transmission electron microscope (TEM). Ionic liquid-sensitized effect in aqueous solution was then investigated. In the presence of ionic liquid as catalyst, H2O2 was decomposed into radical that could quench the fluorescence of CdSe QDs more efficiently and rapidly. Then the oxidization of glucose by glucose oxidase was coupled with the fluorescence quenching of CdSe QDs by H2O2 producer with ionic liquid catalyst, which can be used to detect glucose. Therefore, a new FL analysis system was developed for the determination of glucose. Under the optimum conditions, there is a good linear relationship between the relative PL emission intensity and the concentration of glucose in the range of 5.0×10(-7)-1.0×10(-4) M of glucose with a correlation coefficient (R(2)) of 0.9973. The limit of detection of this system was found to be 1.0×10(-7) M. This method is not only simple, sensitive and low cost, but also reliable for practical applications.
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Affiliation(s)
- Seyed Naser Azizi
- Analytical Division, Faculty of Chemistry, University of Mazandaran, Babolsar 4741695447, Iran.
| | - Mohammad Javad Chaichi
- Analytical Division, Faculty of Chemistry, University of Mazandaran, Babolsar 4741695447, Iran
| | - Parmis Shakeri
- Analytical Division, Faculty of Chemistry, University of Mazandaran, Babolsar 4741695447, Iran
| | - Ahmadreza Bekhradnia
- Pharmaceutical Sciences Research Center, Department of Medicinal Chemistry, Mazandaran University of Medical Sciences, Sari, Iran
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29
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Wang S, Gao Y. Chitosan films as a template for biosynthesis of cobalt sulfide nanoparticals and as sensor material for dibutyl phthalate. POLYMER SCIENCE SERIES B 2015. [DOI: 10.1134/s1560090415030100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Li J, Yin C, Huo F. Chromogenic and fluorogenic chemosensors for hydrogen sulfide: review of detection mechanisms since the year 2009. RSC Adv 2015. [DOI: 10.1039/c4ra11870g] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The development of probes for the biologically important gas hydrogen sulfide (H2S) has been an active area of research in recent years.
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Affiliation(s)
- Jianfang Li
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- China
| | - Caixia Yin
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- China
| | - Fangjun Huo
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- China
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31
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Bhopate DP, Mahajan PG, Garadkar KM, Kolekar GB, Patil SR. A highly selective and sensitive single click novel fluorescent off–on sensor for copper and sulfide ions detection directly in aqueous solution using curcumin nanoparticles. NEW J CHEM 2015. [DOI: 10.1039/c5nj01228g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Graphical representation of the binding of CURNPs to Cu2+(fluorescence off) and release of CURNPs (fluorescence on) by the reaction of S2−with copper bound to CURNPs.
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Affiliation(s)
- Dhanaji P. Bhopate
- Fluorescence Spectroscopy Laboratory
- Department of Chemistry
- Shivaji University
- Kolhapur
- India
| | - Prasad G. Mahajan
- Fluorescence Spectroscopy Laboratory
- Department of Chemistry
- Shivaji University
- Kolhapur
- India
| | - Kalyanrao M. Garadkar
- Fluorescence Spectroscopy Laboratory
- Department of Chemistry
- Shivaji University
- Kolhapur
- India
| | - Govind B. Kolekar
- Fluorescence Spectroscopy Laboratory
- Department of Chemistry
- Shivaji University
- Kolhapur
- India
| | - Shivajirao R. Patil
- Fluorescence Spectroscopy Laboratory
- Department of Chemistry
- Shivaji University
- Kolhapur
- India
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32
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Sharma R, Bisen DP. Thermoluminescence of mercaptoethanol-capped ZnS:Mn nanoparticles. LUMINESCENCE 2014; 30:175-81. [PMID: 24953864 DOI: 10.1002/bio.2710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/28/2014] [Accepted: 05/05/2014] [Indexed: 11/06/2022]
Abstract
The thermoluminescence (TL) of nanoparticles has become a matter of keen interest in recent times but is rarely reported. This article reports the synthesis of ZnS:Mn nanocrystals using a chemical route, with mercaptoethanol (ME) as the capping agent. The particle sizes for the nanocrystals were measured by X-ray diffraction (XRD) and also by studying transmission electron microscopy (TEM) patterns. The particle sizes of the synthesized samples were found to be between 1 and 3 nm. For samples with different concentrations of the capping agent, it was found that the TL intensity of the ZnS:Mn nanoparticles increased as the particle size decreased. A shift in the peak position of the TL glow curve was also seen with decreasing particle size. The TL intensity was found to be maximal for samples with 1.2% of Mn. A change in the peak position was not found for samples with different concentrations of Mn. The half-width glow peak curve method was used to determine the trap-depth. The frequency factor of the synthesized samples was also calculated. The stability of the charge carriers in the traps increases with decreasing nanoparticle size. The higher stability may be attributed to the higher surface/volume ratio and also to the increase in the trap-depth with decreasing particle size.
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Affiliation(s)
- Ravi Sharma
- Department of Physics, Govt. Arts & Commerce Girls College, Devendra Nagar Raipur (C.G.), 492001, India
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33
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Luo X, Wu W, Deng F, Chen D, Luo S, Au C. Quantum dot-based turn-on fluorescent probe for imaging intracellular zinc(II) and cadmium(II) ions. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1264-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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An overview of recent advances in the application of quantum dots as luminescent probes to inorganic-trace analysis. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.02.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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35
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A fluorescent probe for detecting thiamine using the luminescence intensity of nanoparticles. J Fluoresc 2014; 24:1025-30. [PMID: 24737227 DOI: 10.1007/s10895-014-1377-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 03/19/2014] [Indexed: 12/12/2022]
Abstract
Determination of molecules and biomolecules using nanoparticles is promising in the development of analytical techniques. Modified Eu-doped Y2O3 nanoparticles (Y2O3:Eu NPs) by captopril have been used as a probe for thiamine (vitamin B1) determination. According to the fluorescence enhancement of modified Eu-doped Y2O3 nanoparticles caused by thiamine, a simple and sensitive method were proposed for its detection. The increase in modified Y2O3:Eu NPs fluorescence signal as a function of thiamine concentration was found to be linear in the concentration range of 0-44 μM. The limit of detection (LOD) of thiamine by this method was 0.144 μM. All the measurements were performed in natural pH, at the room temperature under ambient conditions. Possible interaction mechanism was discussed.
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36
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Pourreza N, Golmohammadi H. Green colorimetric recognition of trace sulfide ions in water samples using curcumin nanoparticle in micelle mediated system. Talanta 2014; 119:181-6. [DOI: 10.1016/j.talanta.2013.11.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 10/30/2013] [Accepted: 11/01/2013] [Indexed: 12/19/2022]
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37
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Kolluru GK, Shen X, Kevil CG. Detection of hydrogen sulfide in biological samples: current and future. Expert Rev Clin Pharmacol 2014; 4:9-12. [DOI: 10.1586/ecp.10.132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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38
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Hydrogen sulfide inhibits the renal fibrosis of obstructive nephropathy. Kidney Int 2013; 85:1318-29. [PMID: 24284510 PMCID: PMC4040941 DOI: 10.1038/ki.2013.449] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 08/01/2013] [Accepted: 08/29/2013] [Indexed: 12/13/2022]
Abstract
Hydrogen sulfide has recently been found decreased in chronic kidney disease. Here we determined the effect and underlying mechanisms of hydrogen sulfide on a rat model of unilateral ureteral obstruction. Compared with normal rats, obstructive injury decreased the plasma hydrogen sulfide level. Cystathionine-β-synthase, a hydrogen sulfide-producing enzyme, was dramatically reduced in the ureteral obstructed kidney, but another enzyme cystathionine-γ-lyase was increased. A hydrogen sulfide donor (sodium hydrogen sulfide) inhibited renal fibrosis by attenuating the production of collagen, extracellular matrix, and the expression of α-smooth muscle actin. Meanwhile, the infiltration of macrophages and the expression of inflammatory cytokines including interleukin-1β, tumor necrosis factor-α, and monocyte chemoattractant protein-1 in the kidney were also decreased. In cultured kidney fibroblasts, a hydrogen sulfide donor inhibited the cell proliferation by reducing DNA synthesis and downregulating the expressions of proliferation-related proteins including proliferating cell nuclear antigen and c-Myc. Further, the hydrogen sulfide donor blocked the differentiation of quiescent renal fibroblasts to myofibroblasts by inhibiting the transforming growth factor-β1-Smad and mitogen-activated protein kinase signaling pathways. Thus, low doses of hydrogen sulfide or its releasing compounds may have therapeutic potentials in treating chronic kidney disease.
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39
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Kolluru GK, Shen X, Bir SC, Kevil CG. Hydrogen sulfide chemical biology: pathophysiological roles and detection. Nitric Oxide 2013; 35:5-20. [PMID: 23850632 DOI: 10.1016/j.niox.2013.07.002] [Citation(s) in RCA: 309] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Revised: 06/26/2013] [Accepted: 07/02/2013] [Indexed: 01/02/2023]
Abstract
Hydrogen sulfide (H2S) is the most recent endogenous gasotransmitter that has been reported to serve many physiological and pathological functions in different tissues. Studies over the past decade have revealed that H2S can be synthesized through numerous pathways and its bioavailability regulated through its conversion into different biochemical forms. H2S exerts its biological effects in various manners including redox regulation of protein and small molecular weight thiols, polysulfides, thiosulfate/sulfite, iron-sulfur cluster proteins, and anti-oxidant properties that affect multiple cellular and molecular responses. However, precise measurement of H2S bioavailability and its associated biochemical and pathophysiological roles remains less well understood. In this review, we discuss recent understanding of H2S chemical biology, its relationship to tissue pathophysiological responses and possible therapeutic uses.
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Affiliation(s)
- Gopi K Kolluru
- Department of Pathology, LSU Health-Shreveport, United States
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40
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Rajabi HR, Shamsipur M, Khosravi AA, Khani O, Yousefi MH. Selective spectrofluorimetric determination of sulfide ion using manganese doped ZnS quantum dots as luminescent probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 107:256-262. [PMID: 23434552 DOI: 10.1016/j.saa.2013.01.045] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 01/11/2013] [Accepted: 01/17/2013] [Indexed: 06/01/2023]
Abstract
This work reports a spectrofluorimetric method for selective and sensitive determination of sulfide ion in aqueous solution. The ultra-small zinc sulfide quantum dots (QDs) doped with manganese (ZnS:Mn) were synthesized by using a simple and fast procedure based on the co-precipitation of nanoparticles in aqueous solution in the presence of 2-mercaptoethanol, as capping agent. The nanoparticles have exhibited two strong fluorescent emissions at about 424 and 594 nm. Luminescent surface-capped ZnS:Mn QDs, with particle size below 5 nm, have been applied for determination of sulfide anions in water samples. Under the optimum conditions, the fluorescence intensity of ZnS:Mn QDs is linearly proportional to the sulfide ion concentration in the range 1.2×10(-6) to 2.6×10(-5) mol L(-1) with a detection limit as 3.3×10(-7) mol L(-1). The relative standard deviation for five replicate measurements (for 8.0×10(-6) mol L(-1) of S(2-)) was obtained to be 2.6%. It was founded that the interference of the other anions was negligible on the quantitive determination of sulfide ion.
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41
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Sang LJ, Wu YY, Wang HF. Polyethyleneimine/Manganese-Doped ZnS Nanocomposites: A Multifunctional Probe for Two-Color Imaging and Three-Dimensional Sensing. Chempluschem 2013. [DOI: 10.1002/cplu.201300049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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42
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Wang HF, Wu YY, Yan XP. Room-Temperature Phosphorescent Discrimination of Catechol from Resorcinol and Hydroquinone Based on Sodium Tripolyphosphate Capped Mn-Doped ZnS Quantum Dots. Anal Chem 2013; 85:1920-5. [DOI: 10.1021/ac303374s] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- He-Fang Wang
- State Key
Laboratory of Medicinal Chemical Biology
and Research Center for Analytical Sciences, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071,
China
| | - Ye-Yu Wu
- State Key
Laboratory of Medicinal Chemical Biology
and Research Center for Analytical Sciences, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071,
China
| | - Xiu-Ping Yan
- State Key
Laboratory of Medicinal Chemical Biology
and Research Center for Analytical Sciences, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071,
China
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43
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44
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Tan T, Liu C, Liu L, Zhang K, Zou S, Hong J, Zhang M. Hydrogen sulfide formation as well as ethanol production in different media by cysND- and/or cysIJ-inactivated mutant strains of Zymomonas mobilis ZM4. Bioprocess Biosyst Eng 2012; 36:1363-73. [PMID: 23086550 DOI: 10.1007/s00449-012-0839-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 10/04/2012] [Indexed: 11/25/2022]
Abstract
Many bacteria reduce inorganic sulfate to sulfide to satisfy their need for sulfur, one of the most important elements for biological life. But little is known about the metabolic pathways involving hydrogen sulfide (H₂S) in mesophilic bacteria. By genomic sequence analysis, a complete set of genes for the assimilatory sulfate reduction pathway has been identified in the ethanologen Zymomonas mobilis. In this study, the first ATP sulfurylase- and final sulfite reductase-encoding genes cysND and cysIJ, respectively, in the putative pathway from sulfate to sulfite in Z. mobilis ZM4 was singly or doubly inactivated by homologous recombination and a site-specific FLP-FRT recombination. The resultant mutants, ∆cysND, ∆cysIJ and ∆cysND-cat∆cysIJ, were unable to produce detectable H₂S in glucose or sucrose-containing rich medium and sweet sorghum juice, in which the wild-type ZM4 produced detectable H₂S. While adding sulfite (SO₃²⁻) into media impaired the growth of the mutants and ZM4 to varying degrees, the sulfite restored the H₂S formation in the ∆cysND in the above media, but not in the ∆cysIJ and ∆cysND-cat∆cysIJ mutants. Although it seemed that the inactivation of cysND and cysIJ did not exert a significant negative effect on the cell growth at least in glucose or sucrose medium, the ethanol production of all mutants was inferior to that of ZM4 in sucrose medium and sweet sorghum juice. In addition, adding L-cysteine to glucose-containing rich media restored H₂S formation of all mutants, indicating the existence of another pathway for producing H₂S in Z. mobilis. All these results would help to further elucidate the metabolic pathways involving H₂S in Z. mobilis and exploit the biotechnological applications of this industrially important bacterium.
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Affiliation(s)
- Tao Tan
- Biomass Conversion Laboratory, Tianjin R&D Center for Petrochemical Technology, Tianjin University, Weijin Road 92, Tianjin, 300072, People's Republic of China
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45
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Shen X, Peter EA, Bir S, Wang R, Kevil CG. Analytical measurement of discrete hydrogen sulfide pools in biological specimens. Free Radic Biol Med 2012; 52:2276-83. [PMID: 22561703 PMCID: PMC4413934 DOI: 10.1016/j.freeradbiomed.2012.04.007] [Citation(s) in RCA: 162] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Revised: 04/03/2012] [Accepted: 04/06/2012] [Indexed: 01/27/2023]
Abstract
Hydrogen sulfide (H₂S) is a ubiquitous gaseous signaling molecule that plays a vital role in numerous cellular functions and has become the focus of many research endeavors, including pharmacotherapeutic manipulation. Among the challenges facing the field is the accurate measurement of biologically active H₂S. We have recently reported that the typically used methylene blue method and its associated results are invalid and do not measure bona fide H₂S. The complexity of analytical H₂S measurement reflects the fact that hydrogen sulfide is a volatile gas and exists in the body in various forms, including a free form, an acid-labile pool, and bound as sulfane sulfur. Here we describe a new protocol to discretely measure specific H₂S pools using the monobromobimane method coupled with RP-HPLC. This new protocol involves selective liberation, trapping, and derivatization of H₂S. Acid-labile H₂S is released by incubating the sample in an acidic solution (pH 2.6) of 100 mM phosphate buffer with 0.1mM diethylenetriaminepentaacetic acid (DTPA), in an enclosed system to contain volatilized H₂S. Volatilized H₂S is then trapped in 100 mM Tris-HCl (pH 9.5, 0.1 mM DTPA) and then reacted with excess monobromobimane. In a separate aliquot, the contribution of the bound sulfane sulfur pool was measured by incubating the sample with 1 mM TCEP (tris(2-carboxyethyl)phosphine hydrochloride), a reducing agent, to reduce disulfide bonds, in 100 mM phosphate buffer (pH 2.6, 0.1 mM DTPA), and H₂S measurement was performed in a manner analogous to the one described above. The acid-labile pool was determined by subtracting the free hydrogen sulfide value from the value obtained by the acid-liberation protocol. The bound sulfane sulfur pool was determined by subtracting the H₂S measurement from the acid-liberation protocol alone compared to that of TCEP plus acidic conditions. In summary, our new method allows very sensitive and accurate measurement of the three primary biological pools of H₂S, including free, acid-labile, and bound sulfane sulfur, in various biological specimens.
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Affiliation(s)
| | | | | | - Rui Wang
- Dept of Biology, Lakehead University
| | - Christopher G. Kevil
- Dept of Pathology, LSU Health-Shreveport
- Correspondence: Christopher Kevil, PhD, Department of Pathology, 1501 Kings Hwy, LSU Health Sciences Center, Shreveport, LA 71130,
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46
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Costas-Mora I, Romero V, Pena-Pereira F, Lavilla I, Bendicho C. Quantum Dots Confined in an Organic Drop as Luminescent Probes for Detection of Selenium by Microfluorospectrometry after Hydridation: Study of the Quenching Mechanism and Analytical Performance. Anal Chem 2012; 84:4452-9. [DOI: 10.1021/ac300221s] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Costas-Mora
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Vanesa Romero
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Francisco Pena-Pereira
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Isela Lavilla
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
| | - Carlos Bendicho
- Departamento de Química Analítica
y Alimentaria,
Área de Química Analítica, Facultad de Química, Universidad de Vigo, Campus As Lagoas-Marcosende s/n,
36310 Vigo, Spain
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47
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Ren HB, Wu BY, Chen JT, Yan XP. Silica-Coated S2–-Enriched Manganese-Doped ZnS Quantum Dots as a Photoluminescence Probe for Imaging Intracellular Zn2+ Ions. Anal Chem 2011; 83:8239-44. [DOI: 10.1021/ac202007u] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hu-Bo Ren
- Research Center for Analytical Sciences, College of Chemistry, and State Key Laboratory of Medicinal Chemical Biology, and ‡Department of Biochemistry and Molecular Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Bo-Yue Wu
- Research Center for Analytical Sciences, College of Chemistry, and State Key Laboratory of Medicinal Chemical Biology, and ‡Department of Biochemistry and Molecular Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Jia-Tong Chen
- Research Center for Analytical Sciences, College of Chemistry, and State Key Laboratory of Medicinal Chemical Biology, and ‡Department of Biochemistry and Molecular Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Xiu-Ping Yan
- Research Center for Analytical Sciences, College of Chemistry, and State Key Laboratory of Medicinal Chemical Biology, and ‡Department of Biochemistry and Molecular Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
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48
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Facile synthesis of N-acetyl-l-cysteine capped ZnS quantum dots as an eco-friendly fluorescence sensor for Hg2+. Talanta 2011; 85:1738-43. [DOI: 10.1016/j.talanta.2011.06.071] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/24/2011] [Accepted: 06/27/2011] [Indexed: 11/20/2022]
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49
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Martínez-Máñez R, Sancenón F, Hecht M, Biyikal M, Rurack K. Nanoscopic optical sensors based on functional supramolecular hybrid materials. Anal Bioanal Chem 2010; 399:55-74. [DOI: 10.1007/s00216-010-4198-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 09/02/2010] [Accepted: 09/05/2010] [Indexed: 01/10/2023]
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