scholarly journals A Chelation-enhanced Fluorescence Assay using Thiourea Capped Carbonaceous Fluorescent Nanoparticles for As (III) Detection in Water Samples

2021 ◽  
Author(s):  
Susan Mohammadi ◽  
Somayeh Mohammadi ◽  
Abdollah Salimi ◽  
Rezgar Ahmadi
Keyword(s):  
Water Samples ◽  
Fluorescence Assay ◽  
Fluorescent Nanoparticles ◽  
Enhanced Fluorescence ◽  
Chelation Enhanced Fluorescence

scholarly journals A Practical Hydrazine-Carbothioamide-Based Fluorescent Probe for the Detection of Zn2+: Applications to Paper Strip, Zebrafish and Water Samples

Chemosensors ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 32
Author(s):  
Boeon Suh ◽  
Dongkyun Gil ◽  
Sojeong Yoon ◽  
Ki-Tae Kim ◽  
Cheal Kim
Keyword(s):  
Metal Ions ◽  
Fluorescent Probe ◽  
Water Samples ◽  
Theoretical Calculations ◽  
Fluorescence Emission ◽  
Solution Phase ◽  
Paper Strip ◽  
Enhanced Fluorescence ◽  
Real Water Samples ◽  
Chelation Enhanced Fluorescence

A practical hydrazine-carbothioamide-based fluorescent chemosensor TCC (N-(4-chlorophenyl)-2-(thiophene-2-carbonyl)hydrazine-1-carbothioamide) was applied for Zn2+ detection. TCC exhibited selective fluorescence emission for Zn2+ and did not show any interference with other metal ions. In particular, TCC was utilized for the detection of Zn2+ in paper strips, zebrafish and real water samples. TCC could detect Zn2+ down to 0.39 μM in the solution phase and 51.13 μM in zebrafish. The association ratio between TCC and Zn2+ was determined to be 2:1 by ESI-mass and Job plot. The sensing mechanism of TCC for Zn2+ was illustrated to be a chelation-enhanced fluorescence process through spectroscopic experiments and theoretical calculations.

A benzothiazole-based fluorescence turn-on sensor for copper(II)

2021 ◽  
Author(s):  
Gyeongjin Kim ◽  
Donghwan Choi ◽  
Cheal Kim
Keyword(s):  
Charge Transfer ◽  
Limit Of Detection ◽  
Theoretical Calculations ◽  
Enhanced Fluorescence ◽  
Turn On ◽  
Fluorescent Response ◽  
Chelation Enhanced Fluorescence ◽  
Fluorescence Turn On ◽  
Internal Charge Transfer ◽  
Internal Charge

Abstract A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with “off-on” fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.

Dynamic and static excimer: a versatile platform for single component white-light emission and chelation-enhanced fluorescence

2018 ◽  
Vol 6 (44) ◽  
pp. 12086-12094 ◽  
Author(s):  
Virendra Kumar ◽  
Bahadur Sk ◽  
Subhankar Kundu ◽  
Abhijit Patra
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Component ◽  
Sensitive Detection ◽  
Enhanced Fluorescence ◽  
Efficient Generation ◽  
Chelation Enhanced Fluorescence

Tailoring the formation of dynamic and static excimers in a C3-symmetric architecture led to efficient generation of white light and sensitive detection of Fe3+ and Al3+ in a single molecular platform.

Chelation enhanced fluorescence detection of non-metal ions

1989 ◽  
Vol 111 (23) ◽  
pp. 8735-8737 ◽  
Author(s):  
Michael E. Huston ◽  
Engin U. Akkaya ◽  
Anthony W. Czarnik
Keyword(s):  
Metal Ions ◽  
Fluorescence Detection ◽  
Enhanced Fluorescence ◽  
Chelation Enhanced Fluorescence

A novel peptide-based fluorescent chemosensor for measuring zinc ions using different excitation wavelengths and application in live cell imaging

2015 ◽  
Vol 3 (17) ◽  
pp. 3617-3624 ◽  
Author(s):  
Peng Wang ◽  
Jiang Wu ◽  
Panpan Zhou ◽  
Weisheng Liu ◽  
Yu Tang
Keyword(s):  
Aqueous Solution ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Living Cells ◽  
Fluorescent Chemosensor ◽  
Zinc Ions ◽  
Enhanced Fluorescence ◽  
Chelation Enhanced Fluorescence

A novel peptide-based fluorescent chemosensor containing both tryptophan and a dansyl fluorophore has been designed to detect Zn2+ in 100% aqueous solution and living cells via two pathways including fluorescence resonance energy transfer and chelation enhanced fluorescence.

Sign in / Sign up

Export Citation Format

Share Document