Upconversion nanoparticles grafted molybdenum disulfide nanosheets platform for microcystin-LR sensing

Lv, Jiajia; Zhao, Sen; Wu, Shijia; Wang, Zhouping

doi:10.1016/j.bios.2016.09.110

Cited by 78 publications

(29 citation statements)

References 44 publications

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“…This is due to the fact that based on the interaction between biotin and avidin, biotinylated ZEN aptamer and its complementary DNA were connected on the surfaces of streptavidin-conjugated MNPs and UCNPs during the incubation process. At the end of the process, most of ZEN aptamer and its complementary DNA was conjugated with MNPs and UCNPs, respectively, which was similar to the results reported by Lv, Zhao, Wu, and Wang (2017). In addition, the effect of volume of ZEN aptamer solution on the conjugate ratio, which was defined as the ratio of the decreased absorbance of the supernatant solution to the solution of the original solution, was investigated in this study.…”

Section: Characterization Of Fluorescence Signal Probes and Immune-sesupporting

confidence: 79%

Highly sensitive fluorescence sensing of zearalenone using a novel aptasensor based on upconverting nanoparticles

Chughtai

et al. 2017

Food Chemistry

108

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A facile strategy was successfully developed for the detection of zearalenone (ZEN). In this assay, highly fluorescent upconversion nanoparticles were synthesized and conjugated with the complementary oligonucleotide of ZEN aptamer for use as signal probes. Magnetic nanoparticles immobilized with the ZEN aptamer were assigned as capture probes. The results exhibited that the linear correlation between the decreased luminescence intensity of the signal and the concentration of ZEN was very strong (R=0.9957) in the range of 0.05-100μg/L. In addition, the limit of detection of the proposed method (0.126μg/kg for corn and 0.007μg/L for beer) was significantly lower than the existing methods. Furthermore, the reliability of the competitive immunoassay format was validated by comparing the results determined in real food samples to those obtained from a commercially available method. Overall, the novel aptasensor have showed great potential for rapid and accurate ZEN determination.

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Section: Characterization Of Fluorescence Signal Probes and Immune-sesupporting

confidence: 79%

Highly sensitive fluorescence sensing of zearalenone using a novel aptasensor based on upconverting nanoparticles

Chughtai

et al. 2017

Food Chemistry

108

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“…NaYF 4 :20%Yb, 0.5%Tm nanoparticle were synthesized using a user-friendly procedure as our previously reported 36 . In brief, YCl 3 ·6H 2 O, YbCl 3 ·6H 2 O and ErCl 3 ·6H 2 O (Ln = Y:79.5%, Yb:20%, Er:0.5%) were mixed with 4 mL oleic acid and 16 mL octadecene in a 100 mL flask, heated to 160 °C to form a homogeneous solution, and then cooled to room temperature.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic degradation of microcystin-LR with a nanostructured photocatalyst based on upconversion nanoparticles@TiO2 composite under simulated solar lights

Wang

et al. 2017

Sci Rep

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In this work, we prepared advanced upconversion nanoparticle coated with TiO2 photocatalysts (NaYF4:Yb,Tm@TiO2) to utilize not only UV energy but also the large portion of NIR energy in order to improve the utilization efficiency of solar lights. The MC-LR (10 μg/mL) degradation rate can be approached 100% within 30 min at the concentration of NaYF4:Yb,Tm@TiO2 0.4 mg/mL and initial pH value 4, while 61%, using pure TiO2 (P25) under simulated solar lights. The reaction processes were studied and fitted with the pseudo-first-order kinetic model. Highly reactive hydroxyl radicals (•OH) were found to be the major reactive species. Meanwhile, seven degradation intermediates of MC-LR were examined by liquid chromatography/mass spectrometry and the degradation mechanism was analyzed. The main degradation pathways were proposed based on the molecular weight of the intermediates and the reaction mechanism are hydroxylation on the diene bonds and the aromatic ring of Adda. The products were evaluated to be nontoxic based on the construction of the intermediates. This study demonstrated that the NIR energy can be used as the driving source for photocatalysis besides the UV and the NIR-responsed photocatalysis had a high-efficiency and potential for MC-LR degradation.

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“…Aptamers have several advantages: (1) they can selectively bind various targets from ions to cells; (2) easy synthesis and modification; (3) stable over a range of temperatures and pH values. Owing to these advantages, there are many recent reports using aptamers to detect various targets, such as Escherichia coli ( E. coli ), microcystin-LR (MC-LR), and thrombin [ 35 , 57 , 58 ]. The group of Lin reported the detection of E. coli 8739 using LRET between UCNPs and AuNPs ( Figure 5 d) [ 35 ].…”

Section: Lanthanide-doped Luminescent Nanoparticles For Diagnosticmentioning

confidence: 99%

“…Wang et al developed a sensor to detect MC-LR (a microcystin which acts as a toxic element in water supplies) using MoS 2 nanosheets as a luminescence quencher [ 57 ]. Similar to GO, UCNPs-aptamer are easily attached on the MoS 2 nanosheet by π-π interaction.…”

Section: Lanthanide-doped Luminescent Nanoparticles For Diagnosticmentioning

confidence: 99%

Lanthanide-Doped Nanoparticles for Diagnostic Sensing

et al. 2017

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Lanthanide-doped nanoparticles exhibit unique optical properties, such as a long luminescence lifetime (up to several milliseconds), sharp emission peaks, and upconversion luminescence over the range of wavelengths from near-infrared to visible. Exploiting these optical properties, lanthanide-doped nanoparticles have been widely utilized for cellular and small animal imaging with the absence of background autofluorescence. In addition, these nanoparticles have advantages of high signal-to-noise ratio for highly sensitive and selective diagnostic detection. In this review, we summarize and discuss recent progress in the development of highly sensitive diagnostic methods using lanthanide-doped nanoparticles. Combined with a smartphone, portable luminescence detecting platforms could be widely applied in point-of-care tests.

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Upconversion nanoparticles grafted molybdenum disulfide nanosheets platform for microcystin-LR sensing

Cited by 78 publications

References 44 publications

Highly sensitive fluorescence sensing of zearalenone using a novel aptasensor based on upconverting nanoparticles

Highly sensitive fluorescence sensing of zearalenone using a novel aptasensor based on upconverting nanoparticles

Photocatalytic degradation of microcystin-LR with a nanostructured photocatalyst based on upconversion nanoparticles@TiO2 composite under simulated solar lights

Lanthanide-Doped Nanoparticles for Diagnostic Sensing

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