High selectivity in water soluble MoS2 quantum dots for sensing nitro explosives

2016 ◽  
Vol 4 (26) ◽  
pp. 6321-6326 ◽  
Author(s):  
Dhrubaa Haldar ◽  
Diptiman Dinda ◽  
Shyamal Kumar Saha
Keyword(s):  
Quantum Dots ◽  
High Selectivity ◽  
Water Soluble ◽  
Selective Detection ◽  
Amine Functionalized ◽  
Nitro Explosives ◽  
Aromatic Nitro

Rapid and highly selective detection of Aromatic Nitro explosive Trinitrophenol by amine functionalized MoS2 QDs.

Selective detection of folic acid in the midst of other biomolecules using water-soluble AgInS2 quantum dots

2019 ◽  
Vol 9 (4) ◽  
pp. 1306-1310 ◽  
Author(s):  
Bambesiwe M.M. May ◽  
Sundararajan Parani ◽  
Jose Varghese Rajendran ◽  
Oluwatobi S. Oluwafemi
Keyword(s):  
Quantum Dots ◽  
Folic Acid ◽  
Water Soluble ◽  
Selective Detection ◽  
Image Position

Abstract

scholarly journals High-Yield Production of Water-soluble MoS2 Quantum Dots for Fe3+ Detection and Cell Imaging

2020 ◽  
Author(s):  
Benhua Xu ◽  
Zhiqi Zhang ◽  
Li Wang ◽  
Rui Yuan ◽  
Zhenghua Ju ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Biomedical Applications ◽  
Water Solubility ◽  
High Selectivity ◽  
Water Soluble ◽  
High Yield ◽  
Yield Production ◽  
Sequential Combination ◽  
High Fluorescence ◽  
Average Size

Uniform water soluble MoS2 quantum dots (WS-MSQDs) are synthesized via a sequential combination of sintering/etching/exfoliation method and solvothermal route. The obtained WS-MSQDs with average size of approximately 3.4 nm exhibit sufficient water solubility and remarkable fluorescence properties. The WS-MSQDs have been utilized as a probe for detection of Fe3+ ions with high selectivity and specificity. Furthermore, the WS-MSQDs exhibit high fluorescence stability under different conditions. Finally, the WS-MSQDs are successfully applied for the fluorescence imaging of Fe3+ in living cells, which exhibited practical potential for biomedical applications.

A green one-pot synthesis of nitrogen and sulfur co-doped carbon quantum dots for sensitive and selective detection of cephalexin

2017 ◽  
Vol 95 (6) ◽  
pp. 641-648 ◽  
Author(s):  
Farhad Akhgari ◽  
Naser Samadi ◽  
Khalil Farhadi ◽  
Mehrdad Akhgari
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Limit Of Detection ◽  
Carbon Quantum Dots ◽  
Water Soluble ◽  
Soluble Nitrogen ◽  
Selective Detection ◽  
Photoluminescence Intensity ◽  
Doped Carbon Dots ◽  
Co Doped

The article reports a simple, economic, and green method for preparing water-soluble, nitrogen and sulfur co-doped carbon quantum dots via a one-step hydrothermal method. Pomegranate juice served as the carbon source, and the L-cysteine provided nitrogen and sulfur. Co-doped carbon dots were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy techniques. The co-doped carbon dots served as fluorescent probes for sensitive and selective detection of cephalexin. Briefly, the co-doped carbon dot systems showed quenching of photoluminescence intensity in the presence of cephalexin. The decrease of fluorescence intensity made it possible to analyze cephalexin with satisfactory detection limits and linear ranges. The Sterne–Volmer plot showed a linear relationship (R2 = 0.998) between F0/F and the concentration of cephalexin over the range from 0.3 to 10 μmol L−1. The limit of detection (LOD) was estimated to be 1 × 10−7 mol L−1 (at a signal to noise ratio of 3). To validate the applicability, the described method was successfully applied for the detection of cephalexin in human urine and raw milk samples.

A novel water soluble pillar[5]arene and phenazine derivative self-assembled pseudorotaxane sensor for the selective detection of Hg2+ and Ag+ with high selectivity and sensitivity

2018 ◽  
Vol 42 (12) ◽  
pp. 10148-10152 ◽  
Author(s):  
You-Ming Zhang ◽  
Xiao-Peng Chen ◽  
Guo-Yan Liang ◽  
Kai-Peng Zhong ◽  
Qi Lin ◽  
...  
Keyword(s):  
High Selectivity ◽  
Water Soluble ◽  
Selective Detection ◽  
Phenazine Derivative ◽  
Self Assembled

A bifunctional supramolecular pseudorotaxane chemosensor (G-WAP) based on pillar[5]arene and phenazine imidazole was constructed, which could detect Hg2+ and Ag+ in water.

scholarly journals High-Yield Production of Water-Soluble MoS2 Quantum Dots for Fe3+ Detection and Cell Imaging

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2155
Author(s):  
Benhua Xu ◽  
Zhiqi Zhang ◽  
Peng Zhang ◽  
Li Wang ◽  
Rui Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Biomedical Applications ◽  
Water Solubility ◽  
High Selectivity ◽  
Water Soluble ◽  
High Yield ◽  
Yield Production ◽  
Sequential Combination ◽  
High Fluorescence ◽  
Average Size

Uniform water-soluble MoS2 quantum dots (WS-MSQDs) were synthesized via a sequential combination of sintering/etching/exfoliation method and solvothermal route. The obtained WS-MSQDs with average size of approximately 3.4 nm exhibited sufficient water solubility and remarkable fluorescence properties. The WS-MSQDs were utilized as a probe for detection of Fe3+ ions with high selectivity and specificity. Furthermore, the WS-MSQDs exhibited high fluorescence stability under different conditions. Finally, the WS-MSQDs were successfully applied for the fluorescence imaging of Fe3+ in living cells, which exhibited practical potential for biomedical applications.

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