A label-free turn-on fluorescence probe for rapidly distinguishing cysteine over glutathione in water solution

2016 ◽  
Vol 500 ◽  
pp. 1-5 ◽  
Author(s):  
Liqiang Yan ◽  
Zhineng Kong ◽  
Wei Shen ◽  
Wenqi Du ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Water Solution ◽  
Label Free ◽  
Turn On

A Water-Solution Fluorescence Probe for H2O2 Based on Naphthalimide Derivative

2014 ◽  
Vol 1061-1062 ◽  
pp. 978-982
Author(s):  
You Ming Shen ◽  
Si Meng Yang ◽  
Li Chao Xi ◽  
Wen Yan Cao ◽  
Li Li Zhou ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Linear Response ◽  
High Selectivity ◽  
Fluorescence Probe ◽  
Water Solution ◽  
Water Soluble ◽  
Oxygen Species ◽  
Lower Detection Limit ◽  
Turn On ◽  
Lower Detection

A water-soluble fluorescent probe was described for detecting hydrogen peroxide with the naphthalimide derived as fluorophore and boronate moiety as recognition unit. The probe was developed as a turn-on fluorescent chemosensor with fast, high selectivity and sensitivity toward H2O2over other biological reactive oxygen species. What is more, the probe was linear response to H2O2concentration in the range of 2.5×10−8– 3.2×10−5M and lower detection limit down to 12 nM (S / N = 3) was obtained.

A new label-free and turn-on fluorescence probe for hydrogen peroxide and glucose detection based on DNA–silver nanoclusters

2015 ◽  
Vol 7 (19) ◽  
pp. 7989-7994 ◽  
Author(s):  
Hui-Xia Han ◽  
Xue Tian ◽  
Xiang-Juan Kong ◽  
Ru-Qin Yu ◽  
Xia Chu
Keyword(s):  
Hydrogen Peroxide ◽  
Dna Sequences ◽  
Fluorescence Enhancement ◽  
Fluorescence Probe ◽  
Silver Nanoclusters ◽  
Enhancement Effect ◽  
Glucose Detection ◽  
Label Free ◽  
Turn On ◽  
Ag Ncs

A label-free and turn-on strategy for H2O2 and glucose detection based on the cleavage of ssDNA by ˙OH and the fluorescence enhancement effect when guanine-rich (G-rich) DNA sequences are in proximity to DNA–silver nanoclusters (DNA–Ag NCs).

Ultrasensitive and turn-on homogeneous Hg2+ sensing based on target-triggered isothermal cycling reaction and dsDNA-templated copper nanoparticles

2021 ◽  
Author(s):  
Qingli Chai ◽  
Yuqi Wan ◽  
Yanyun Zou ◽  
Ting Zhu ◽  
Ningxing Li ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Label Free ◽  
Turn On ◽  
Signal Output

In this work, an ultrasensitive and turn-on sensor for homogeneous Hg2+ detection has been constructed based on target-triggered isothermal cycling reaction and rapid label-free signal output with dsDNA-templated copper nanoparticles...

scholarly journals A Turn-ON fluorometric biosensor based on ssDNA immobilized with a metal phenolic nanomaterial for the sequential detection of Pb(ii) and epirubicin cancer drug

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12361-12373
Author(s):  
A. Arunjegan ◽  
P. Rajaji ◽  
S. Sivanesan ◽  
P. Panneerselvam
Keyword(s):  
Acridine Orange ◽  
Cancer Drug ◽  
Sequential Detection ◽  
Label Free ◽  
Fluorescent Biosensor ◽  
Turn On

In this paper, we propose a fluorescent biosensor for the sequential detection of Pb2+ ions and the cancer drug epirubicin (Epn) using the interactions between label-free guanine-rich ssDNA (LFGr-ssDNA), acridine orange (AO), and a metal–phenolic nanomaterial.

scholarly journals A Highly Selective Turn-On Fluorescent Probe for the Detection of Zinc

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3825
Author(s):  
Ling-Yi Shen ◽  
Xiao-Li Chen ◽  
Xian-Jiong Yang ◽  
Hong Xu ◽  
Ya-Li Huang ◽  
...  
Keyword(s):  
High Selectivity ◽  
Fluorescence Probe ◽  
Stoichiometric Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Turn On ◽  
Imine Nitrogen ◽  
System A ◽  
Plot Analysis ◽  
L System

A novel turn-on fluorescence probe L has been designed that exhibits high selectivity and sensitivity with a detection limit of 9.53 × 10−8 mol/L for the quantification of Zn2+. 1H-NMR spectroscopy and single crystal X-ray diffraction analysis revealed the unsymmetrical nature of the structure of the Schiff base probe L. An emission titration experiment in the presence of different molar fractions of Zn2+ was used to perform a Job’s plot analysis. The results showed that the stoichiometric ratio of the complex formed by L and Zn2+ was 1:1. Moreover, the molecular structure of the mononuclear Cu complex reveals one ligand L coordinates with one Cu atom in the asymmetric unit. On adding CuCl2 to the ZnCl2/L system, a Cu-Zn complex was formed and a strong quenching behavior was observed, which inferred that the Cu2+ displaced Zn2+ to coordinate with the imine nitrogen atoms and hydroxyl oxygen atoms of probe L.

A naked-eye visible and turn-on fluorescence probe for Fe3+ and its bioimaging application in living cells

2016 ◽  
Vol 237 ◽  
pp. 501-508 ◽  
Author(s):  
Yaming Liu ◽  
Jinyu Zhang ◽  
Jiaxi Ru ◽  
Xiang Yao ◽  
Yang Yang ◽  
...  
Keyword(s):  
Fluorescence Probe ◽  
Living Cells ◽  
Naked Eye ◽  
Turn On

Silver nanocluster-lightened hybridization chain reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57502-57506 ◽  
Author(s):  
Lin Liu ◽  
Qing Li ◽  
Li-Juan Tang ◽  
Ru-Qin Yu ◽  
Jian-Hui Jiang
Keyword(s):  
Nucleic Acid ◽  
Silver Nanoclusters ◽  
Hybridization Chain Reaction ◽  
Label Free ◽  
Chain Reaction ◽  
Silver Nanocluster ◽  
Turn On ◽  
Nucleic Acid Assays

A hybridization chain reaction (HCR) lightened by DNA-stabilized silver nanoclusters (AgNCs) as a label-free and turn on fluorescence platform for nucleic acid assays.

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