A novel dual response ratiometric fluorescent probe for the determination of H2O2 and glucose via etching of silver nanoparticles

The Analyst ◽  
2019 ◽  
Vol 144 (4) ◽  
pp. 1153-1158 ◽  
Author(s):  
Hongzhi Lu ◽  
Chunwei Yu ◽  
Shuai Quan ◽  
Shoufang Xu
Keyword(s):  
Silver Nanoparticles ◽  
Charge Transfer ◽  
Fluorescent Probe ◽  
Inner Filter Effect ◽  
Fluorescence Assay ◽  
Ratiometric Fluorescence ◽  
Ag Nps ◽  
Dual Response ◽  
Ratiometric Fluorescent Probe

Based on the inner filter effect and charge transfer, a dual response ratiometric fluorescence assay for sensing H2O2 and glucose was proposed based on etching of Ag NPs.

scholarly journals Ratiometric fluorescence probe of Cu2+ and biothiols by using carbon dots and copper nanoclusters

RSC Advances ◽  
2021 ◽  
Vol 11 (53) ◽  
pp. 33662-33674
Author(s):  
Ning Zhao ◽  
Jianqiang Song ◽  
Zheng Huang ◽  
Xiuying Yang ◽  
Yousheng Wang ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Fluorescent Probe ◽  
Carbon Dots ◽  
Fluorescence Probe ◽  
Ratiometric Fluorescence ◽  
Copper Nanoclusters ◽  
Dual Mechanism ◽  
Fluorescent Carbon Dots ◽  
Ratiometric Fluorescent Probe

A dual-mechanism ratiometric fluorescent probe based on N-doped yellow fluorescent carbon dots (y-CDs) and blue fluorescent copper nanoclusters (CuNCs) was established for the first simultaneous determination of Cu2+ and biothiols.

scholarly journals A novel ratiometric fluorescent probe for the selective determination of HClO based on the ESIPT mechanism and its application in real samples

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30943-30951 ◽  
Author(s):  
Jingrui Li ◽  
Aijun Gong ◽  
Guoqing Shi ◽  
Chengwen Chai
Keyword(s):  
Fluorescent Probe ◽  
Real Samples ◽  
Selective Determination ◽  
Ratiometric Fluorescent Probe

Based on the ESIPT fluorescence mechanism, herein, a novel ratiometric fluorescent probe was designed and synthesized for the detection of HClO.

A ratiometric fluorescence sensor for HOCl based on a FRET platform and application in living cells

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17059-17063 ◽  
Author(s):  
Yan-Ru Zhang ◽  
Zhi-Min Zhao ◽  
Le Su ◽  
Jun-Ying Miao ◽  
Bao-Xiang Zhao
Keyword(s):  
Fluorescent Probe ◽  
High Selectivity ◽  
Fast Response ◽  
Living Cells ◽  
Fluorescence Sensor ◽  
Ratiometric Fluorescence ◽  
Ratiometric Fluorescent Probe

A ratiometric fluorescent probe CRSH based on a FRET platform for detecting HOCl. CRSH showed high selectivity, excellent sensitivity and a fast response toward HOCl.

scholarly journals A highly selective ratiometric fluorescent probe for the cascade detection of Zn2+ and H2PO4− and its application in living cell imaging

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40615-40620 ◽  
Author(s):  
Kui Du ◽  
Shizhen Niu ◽  
Li Qiao ◽  
Yandong Dou ◽  
Qing Zhu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Fluorescent Probe ◽  
Living Cell ◽  
Cell Imaging ◽  
High Selectivity ◽  
Ratiometric Sensor ◽  
Intermolecular Charge Transfer ◽  
Living Cell Imaging ◽  
Ratiometric Fluorescent Probe

A simple ratiometric sensor (L1) for the cascade detection of Zn2+ and H2PO4− with high selectivity was reported based on the intermolecular charge transfer (ICT) mechanism.

A highly selective colorimetric assay for the determination of creatinine in biological samples using gluconic acid capped silver nanoparticles after ionic liquid based dispersive liquid phase microextraction

2021 ◽  
pp. 1-8
Author(s):  
Susan Sadeghi ◽  
Mohadeseh Hosseinpour-Zaryabi
Keyword(s):  
Silver Nanoparticles ◽  
Ionic Liquid ◽  
Liquid Phase ◽  
Human Serum ◽  
Gluconic Acid ◽  
Ag Nps ◽  
Liquid Phase Microextraction ◽  
Relative Standard ◽  
Serum And Urine

A dispersive liquid-phase microextraction method combined with UV–vis spectrophotometry was utilized to highly selective determination of creatinine in human serum and urine samples. To overcome the interferences in complex matrices, creatinine reacted with 1,4-naphthoquinone-2- potassium sulfonate reagent to produce a red coloured product that could be extracted into a small volume of 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM]PF6) ionic liquid solvent. To increase the sensitivity of the assay, gluconic acid capped silver nanoparticles (Ag NPs) were used. On addition of Ag NPs to the red coloured extracted product, the solution turned to blue accompanied with a red shift in wavelength around 620 nm that could be detected by the naked eye. The effective variables on the determination of creatinine such as concentration of the reagent, amount of formic and hydrochloric acids, type and volume of the extractant, and concentration of Ag NPs were investigated. Under the optimal conditions, the calibration plot was bimodal with linear ranges from 0.1 to 1.5 µg mL−1 and 1.5 to 105 µg mL−1 creatinine with a limit of detection 0.1 µg mL−1. The relative standard deviation for five measurements at 35 µg mL−1 concentration level was 3.8%. The newly developed assay was used for the determination of creatinine in human serum and urine specimens with satisfactory results.

scholarly journals A real-time ratiometric fluorescent probe for imaging of SO2 derivatives in mitochondria of living cells

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22348-22354 ◽  
Author(s):  
Junwei Shi ◽  
Wei Shu ◽  
Yong Tian ◽  
Yulong Wu ◽  
Jing Jing ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Real Time ◽  
Fluorescent Probe ◽  
Intramolecular Charge Transfer ◽  
Living Cells ◽  
Selective Detection ◽  
Hemicyanine Dye ◽  
Ratiometric Fluorescent Probe

A real-time ratiometric fluorescent probe (IN-CZ) for highly selective detection of sulfite was designed and synthesized, which is based on modulating the intramolecular charge transfer of the hemicyanine dye platform.

Development of a near-infrared ratiometric fluorescent probe for glutathione using an intramolecular charge transfer signaling mechanism and its bioimaging application in living cells

2019 ◽  
Vol 7 (5) ◽  
pp. 809-814 ◽  
Author(s):  
Yong Zhou ◽  
Li Zhang ◽  
Xuan Zhang ◽  
Zhi-Jia Zhu
Keyword(s):  
Aqueous Solution ◽  
Charge Transfer ◽  
Fluorescent Probe ◽  
Near Infrared ◽  
Intramolecular Charge Transfer ◽  
Living Cells ◽  
Selective Detection ◽  
Signaling Mechanism ◽  
Acetyl Group ◽  
Ratiometric Fluorescent Probe

A novel NIR ratiometric fluorescent probe HBT-GSH was developed for the selective detection of GSH over Cys and Hcy in aqueous solution. The signaling mechanism of the GSH-induced removal of an acetyl group and the switching on of ICT fluorescence was proposed.

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