Luminescent magnetic nanoparticles encapsulated in MOFs for highly selective and sensitive detection of ClO−/SCN− and anti-counterfeiting

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8667-8676 ◽  
Author(s):  
Chaorui Li ◽  
Jun Hai ◽  
Siliang Li ◽  
Baodui Wang ◽  
Zhengyin Yang
Keyword(s):  
Magnetic Nanoparticles ◽  
Fluorescent Probe ◽  
Pure Water ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
Zeolitic Imidazolate Framework ◽  
Framework Materials ◽  
Ultra Pure Water

Luminous Eu(iii) complex-functionalized Fe3O4 nanoparticles encapsulated into zeolitic imidazolate framework materials (nano-ZIF-8) were prepared and employed as a fluorescent probe for detecting ClO− and SCN− with good selectivity and high sensitivity in ultra-pure water.

Fluorescence behavior of a unique two-photon fluorescent probe in aggregate and solution states and highly sensitive detection of RNA in water solution and living systems

2016 ◽  
Vol 52 (57) ◽  
pp. 8838-8841 ◽  
Author(s):  
Yong Liu ◽  
Fangfang Meng ◽  
Longwei He ◽  
Xiaoqiang Yu ◽  
Weiying Lin
Keyword(s):  
Fluorescent Probe ◽  
Water Solution ◽  
Pure Water ◽  
Water Systems ◽  
Living Systems ◽  
Sensitive Detection ◽  
Two Photon ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
First Time

In this work, we developed a unique fluorescent probe HVC-6 for highly sensitive detection of RNA in pure water systems and living systems by aggregation–disaggregation of the probe for the first time.

scholarly journals Toxicity of Zinc Oxide Nanoparticles on the Embryo of Javanese Medaka (Oryzias javanicus Bleeker, 1854): A Comparative Study

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2170
Author(s):  
Naweedullah Amin ◽  
Syaizwan Zahmir Zulkifli ◽  
Mohammad Noor Amal Azmai ◽  
Ahmad Ismail
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Tap Water ◽  
Pure Water ◽  
High Sensitivity ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
Ultra Pure Water ◽  
Oryzias Javanicus ◽  
Javanese Medaka

(1) Background: Zinc oxide nanoparticles (ZnO NPs) are widely applied in various human products. However, they can be extremely toxic for aquatic organisms, particularly fish. This research was conducted to determine the LC50 of ZnO NPs on the embryos of Javanese medaka (Oryzias javanicus) in ultra-pure, deionized, and dechlorinated tap water; (2) Methods: The experiments were conducted in a completely randomized design (CRD) with three replicates for six treatments for acute (0.100, 0.250, 0.500, 1.00, 5.00, and 10.00 mg/L) exposures for each type of water; (3) Results: The LC50 of ZnO NPs at 96 h was determined as 0.643 mg/L in ultra-pure water, 1.333 mg/L in deionized water, and 2.370 in dechlorinated tap water. In addition to concentration-dependent toxicity, we also observed time-dependent toxicity for ZnO NPs. In addition, the sizes of ZnO NPs increased immediately after dispersion and were 1079 nm, 3209 nm, and 3652 nm in ultra-pure, deionized, and dechlorinated tap water. The highest concentration of measured Zn2+ in exposure concentrations was found in ultra-pure water, followed by deionized and dechlorinated tap water suspensions. Furthermore, Javanese medaka showed high sensitivity to acute exposure of ZnO NPs in all types of water.

scholarly journals Highly sensitive detection of nitrobenzene by a series of fluorescent 2D zinc(ii) metal–organic frameworks with a flexible triangular ligand

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 23975-23984
Author(s):  
Xue Yang ◽  
Yixia Ren ◽  
Hongmei Chai ◽  
Xiufang Hou ◽  
Zhixiang Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
High Sensitivity ◽  
Fluorescent Sensors ◽  
Sensitive Detection ◽  
Donor Ligands ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Highly Sensitive Detection

Four fluorescent 2D Zn-MOFs based on a flexible triangular ligand and linear N-donor ligands are hydrothermally prepared and used to detect nitrobenzene in aqueous solution with high sensitivity, demonstrating their potential as fluorescent sensors.

scholarly journals Highly Sensitive Fluorescent Detection of Acetylcholine Based on the Enhanced Peroxidase-Like Activity of Histidine Coated Magnetic Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1207
Author(s):  
Hong Jae Cheon ◽  
Quynh Huong Nguyen ◽  
Moon Il Kim
Keyword(s):  
Magnetic Nanoparticles ◽  
High Sensitivity ◽  
High Specificity ◽  
Choline Oxidase ◽  
Fluorescent Detection ◽  
One Pot ◽  
Site Structure ◽  
Specificity And Sensitivity ◽  
Highly Sensitive ◽  
Peroxidase Mimics

Inspired by the active site structure of natural horseradish peroxidase having iron as a pivotal element with coordinated histidine residues, we have developed histidine coated magnetic nanoparticles (His@MNPs) with relatively uniform and small sizes (less than 10 nm) through one-pot heat treatment. In comparison to pristine MNPs and other amino acid coated MNPs, His@MNPs exhibited a considerably enhanced peroxidase-imitating activity, approaching 10-fold higher in catalytic reactions. With the high activity, His@MNPs then were exploited to detect the important neurotransmitter acetylcholine. By coupling choline oxidase and acetylcholine esterase with His@MNPs as peroxidase mimics, target choline and acetylcholine were successfully detected via fluorescent mode with high specificity and sensitivity with the limits of detection down to 200 and 100 nM, respectively. The diagnostic capability of the method is demonstrated by analyzing acetylcholine in human blood serum. This study thus demonstrates the potential of utilizing His@MNPs as peroxidase-mimicking nanozymes for detecting important biological and clinical targets with high sensitivity and reliability.

scholarly journals A Biocompatible Colorimetric Triphenylamine- Dicyanovinyl Conjugated Fluorescent Probe for Selective and Sensitive Detection of Cyanide Ion in Aqueous Media and Living Cells

Sensors ◽  
2017 ◽  
Vol 17 (2) ◽  
pp. 405 ◽  
Author(s):  
Zi-Hua Zheng ◽  
Zhi-Ke Li ◽  
Lin-Jiang Song ◽  
Qi-Wei Wang ◽  
Qing-Fei Huang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Aqueous Media ◽  
Living Cells ◽  
Sensitive Detection ◽  
Cyanide Ion

Highly sensitive detection of Cr(vi) in groundwater by bimetallic NiFe nanoparticles

2017 ◽  
Vol 9 (6) ◽  
pp. 1031-1037 ◽  
Author(s):  
Jingtao Liu ◽  
Yu Ding ◽  
Lifei Ji ◽  
Xin Zhang ◽  
Fengchun Yang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Hexavalent Chromium ◽  
Low Cost ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
Toxic Heavy Metal ◽  
Metal Pollutants ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Heavy Metal Pollutants

Hexavalent chromium (Cr(vi)) is one of the most toxic heavy metal pollutants in groundwater, and thus the detection of Cr(vi) with high sensitivity, accuracy, and simplicity and low cost is of great importance.

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