Protonation effect on ligands in EuL: a luminescent switcher for fast naked-eye detection of HCl

2015 ◽  
Vol 44 (30) ◽  
pp. 13586-13591 ◽  
Author(s):  
Jun Zhang ◽  
Wen-Bin Yang ◽  
Xiao-Yuan Wu ◽  
Xiao-Fei Kuang ◽  
Can-Zhong Lu
Keyword(s):  
Excited State ◽  
Coordination Polymer ◽  
Energy Change ◽  
Eye Detection ◽  
Naked Eye ◽  
Characteristic Emission ◽  
Lanthanide Coordination Polymer ◽  
Naked Eye Detection ◽  
Protonation Effect

We report a luminescent lanthanide coordination polymer EuL which shows fast turn-off response to HCl vapor. This results from the energy change of the ligand excited state along with the protonation effect which renders the ligands unable to act as efficient antennae for Eu3+ characteristic emission.

Cascade reaction-based rapid and ratiometric detection of H2S/S2− in the presence of bio-thiols with live cell imaging: demasking of ESIPT approach

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62639-62643 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Abhishek Manna ◽  
Monalisa Mondal ◽  
Debasish Sarkar
Keyword(s):  
Excited State ◽  
Benzoic Acid ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Intramolecular Proton Transfer ◽  
Phenyl Ester ◽  
Eye Detection ◽  
Naked Eye ◽  
Ratiometric Detection ◽  
Naked Eye Detection

For the rapid, ratiometric, fluorogenic and “naked eye” detection of H2S/S2−, a pro-excited state intramolecular proton transfer (ESIPT)-based receptor, 2-formyl-benzoic acid 2-benzothiazol-2-yl-phenyl ester (FBBP), has been designed.

Naked-Eye Detection of Hg(II) Ions by Visible Light-Induced Polymerization Initiated by a Hg(II)-Selective Photoredox Catalyst

2021 ◽  
Author(s):  
Hyungwook Kim ◽  
Young Jae Jung ◽  
Jungkyu K. Lee
Keyword(s):  
Visible Light ◽  
Signal Amplification ◽  
Eye Detection ◽  
Naked Eye ◽  
Turn On ◽  
Novel Strategy ◽  
Amplification Strategy ◽  
Naked Eye Detection

We developed a novel strategy for signal amplification strategy using a visible light-induced photopolymerization, initiated by a selective turn-on photoredox catalyst. As photoredox catalysts, fluorescein derivatives are able to initiate...

Naked eye detection and measurement of fluoride concentration in groundwater using novel synthesized receptor

2021 ◽  
Vol 328 ◽  
pp. 112776
Author(s):  
Yogendra Singh Solanki ◽  
Priya Yadav ◽  
Madhu Agarwal ◽  
Ragini Gupta ◽  
Sanjeev Gupta ◽  
...  
Keyword(s):  
Fluoride Concentration ◽  
Eye Detection ◽  
Naked Eye ◽  
Naked Eye Detection

Cholesterol decorated pyridinium urea and carbamate as π-gelators for selective recognition of F- ions

2021 ◽  
Vol 05 ◽  
Author(s):  
Santanu Panja ◽  
Kumaresh Ghosh
Keyword(s):  
Sol Gel ◽  
Functional Materials ◽  
Materials Chemistry ◽  
Eye Detection ◽  
Fluoride Ions ◽  
Biologically Relevant ◽  
Design And Synthesis ◽  
Naked Eye ◽  
Visual Sensing ◽  
Naked Eye Detection

Aim: Design and synthesis of new molecules capable of forming self-assembled gels are indispensable to harvest new functional materials. Supramolecular gels have potential in many areas particularly in biology and materials chemistry. Of the different types of applications, visual sensing of biologically relevant ionic analytes is a fairly recent trend. Here we describe naked eye detection of fluoride ions involving sol-gel methodology. Methods: To execute this, cholesterol substituted pyridinium salts 1-4 have been designed and synthesized of which compounds 3 and 4 served as potential gelators for the naked eye detection of F- ions in DMSO and DMSO-H2O (1:1, v/v) respectively. Results: Gelation study reveals that not only the aromatic surface is crucial for the self-aggregation of molecules via π-π stacking interactions, but also polarity, rigidity and conformational flexibility of the molecules that govern the intermolecular association of gelators are important. Conclusion: Moreover, incorporation of fluorophores (naphthalene) as aromatic surface in the molecular designs, promotes the gelator molecules to execute sensing behavior for F- with high degree of sensitivity in solution phase also.

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