A nucleic acid cleavage-based fluorescent probe for the detection of copper ions in pure aqueous solution

2019 ◽  
Vol 11 (20) ◽  
pp. 2630-2633
Author(s):  
Qirong Deng ◽  
Nan Wang ◽  
Jianke Su ◽  
Aijuan Liu ◽  
Jin Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Fenton Reaction ◽  
Copper Ions ◽  
Fluorescence Signal ◽  
Enhanced Fluorescence ◽  
Carbazole Derivative ◽  
Acid Cleavage ◽  
G Quadruplex ◽  
Pure Aqueous Solution

Herein, a novel carbazole derivative of BEVC was designed with an enhanced fluorescence signal by a G-quadruplex, and thus a fluorescent probe of G-quadruplex/BEVC was obtained by aggregation-induced emission, which could exhibit a decreased fluorescence signal in the presence of Cu2+via the Fenton reaction, demonstrating great potential for Cu2+ assay in pure aqueous solution.

Intra-molecular G-quadruplex structure generated by DNA-templated click chemistry: “Turn-on” fluorescent probe for copper ions

2014 ◽  
Vol 55 ◽  
pp. 187-194 ◽  
Author(s):  
Qinpeng Shen ◽  
Lifen Zhou ◽  
Yijia Yuan ◽  
Yan Huang ◽  
Binbin Xiang ◽  
...  
Keyword(s):  
Click Chemistry ◽  
Fluorescent Probe ◽  
Copper Ions ◽  
Turn On ◽  
Quadruplex Structure ◽  
G Quadruplex

An “off–on–off” fluorescence chemosensor for the sensitive detection of Cu2+ in aqueous solution based on multiple fluorescence emission mechanisms

The Analyst ◽  
2021 ◽  
Vol 146 (8) ◽  
pp. 2670-2678
Author(s):  
Aimei Zhou ◽  
Shuhua Han
Keyword(s):  
Aqueous Solution ◽  
Chemical Sensor ◽  
Copper Ions ◽  
Fluorescence Emission ◽  
High Sensitivity ◽  
Sensitive Detection ◽  
New Type ◽  
Fluorescent Chemical Sensor ◽  
Pure Aqueous Solution

A new type of fluorescent chemical sensor (AHBH-PMOs) with AIE and ICT mechanisms is synthesized, which can detect copper ions in pure aqueous solution with good selectivity and high sensitivity.

A near-infrared fluorescent probe for the discrimination of cysteine in pure aqueous solution and imaging of cysteine in hepatocellular carcinoma cells with facile cell-compatible ability

2019 ◽  
Vol 43 (9) ◽  
pp. 3725-3732 ◽  
Author(s):  
Xin Yang ◽  
Ying Qian
Keyword(s):  
Hepatocellular Carcinoma ◽  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Near Infrared ◽  
Fast Response ◽  
Carcinoma Cells ◽  
Emission Wavelength ◽  
Hepatocellular Carcinoma Cells ◽  
Nir Fluorescence ◽  
Pure Aqueous Solution

A NIR fluorescence sensor for selectively detecting cysteine in aqueous solution with fast response and long emission wavelength was synthesized.

A novel near-infrared fluorescent probe based on isophorone for the bioassay of endogenous cysteine

2021 ◽  
Author(s):  
Hong-Bo Liu ◽  
Hai Xu ◽  
Xin Guo ◽  
Jian Xiao ◽  
Zheng-Hong Cai ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Probe ◽  
Near Infrared ◽  
Stokes Shift ◽  
Rapid Identification ◽  
Large Stokes Shift

A near-infrared (NIR) fluorescent probe with a large Stokes shift (143 nm) for the rapid identification of Cys over Hcy and GSH in aqueous solution was developed.

scholarly journals A highly sensitive octopus-like azobenzene fluorescent probe for determination of abamectin B1 in apples

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhenlong Guo ◽  
YiFei Su ◽  
Kexin Li ◽  
MengYi Tang ◽  
Qiang Li ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Limit Of Detection ◽  
Quantitative Detection ◽  
Fluorescence Signal ◽  
Ionization Mass ◽  
Limit Of Quantification ◽  
Visible Absorption ◽  
Esi Ms ◽  
Relative Standard ◽  
Ft Ir

AbstractThe development of detecting residual level of abamectin B1 in apples is of great importance to public health. Herein, we synthesized a octopus-like azobenzene fluorescent probe 1,3,5-tris (5′-[(E)-(p-phenoxyazo) diazenyl)] benzene-1,3-dicarboxylic acid) benzene (TPB) for preliminary detection of abamectin B1 in apples. The TPB molecule has been characterized by ultraviolet–visible absorption spectrometry, 1H-nuclear magnetic resonance, fourier-transform infrared (FT-IR), electrospray ionization mass spectroscopy (ESI-MS) and fluorescent spectra. A proper determination condition was optimized, with limit of detection and limit of quantification of 1.3 µg L−1 and 4.4 μg L−1, respectively. The mechanism of this probe to identify abamectin B1 was illustrated in terms of undergoing aromatic nucleophilic substitution, by comparing fluorescence changes, FT-IR and ESI-MS. Furthermore, a facile quantitative detection of the residual abamectin B1 in apples was achieved. Good reproducibility was present based on relative standard deviation of 2.2%. Six carboxyl recognition sites, three azo groups and unique fluorescence signal towards abamectin B1 of this fluorescent probe demonstrated reasonable sensitivity, specificity and selectivity. The results indicate that the octopus-like azobenzene fluorescent probe can be expected to be reliable for evaluating abamectin B1 in agricultural foods.

Efficient and rational development of a new fluorescent probe specific for RNA G-quadruplex imaging in cells

2020 ◽  
Vol 324 ◽  
pp. 128770 ◽  
Author(s):  
Ze-Yi Yu ◽  
Wen-Hua Luo ◽  
Xiu-Cai Chen ◽  
Shuo-Bin Chen ◽  
Zhi-Shu Huang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Rational Development ◽  
G Quadruplex ◽  
In Cells
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