Dual-binding pyridine and rhodamine B conjugate derivatives as fluorescent chemosensors for ferric ions in aqueous media and living cells

The Analyst ◽  
2019 ◽  
Vol 144 (9) ◽  
pp. 3094-3102 ◽  
Author(s):  
Fan Song ◽  
Chao Yang ◽  
Haibo Liu ◽  
Zhigang Gao ◽  
Jing Zhu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Rhodamine B ◽  
Aqueous Media ◽  
Living Cells ◽  
Spectroscopic Techniques ◽  
Fluorescent Chemosensors ◽  
Ferric Ions

Two new pyridine-type rhodamine B chemosensors (RBPO and RBPF) used to detect Fe3+ have been designed and synthesized, and the sensing behavior towards various metal ions was evaluated via UV–vis and fluorescence spectroscopic techniques.

scholarly journals A highly selective fluorescent probe for nanomolar detection of ferric ions in the living cells and aqueous media

2020 ◽  
Vol 13 (12) ◽  
pp. 8697-8707
Author(s):  
Jung-Seop Lee ◽  
Shrikant Dashrath Warkad ◽  
Pramod B. Shinde ◽  
Anil Kuwar ◽  
Satish Balasaheb Nimse
Keyword(s):  
Fluorescent Probe ◽  
Aqueous Media ◽  
Living Cells ◽  
Ferric Ions ◽  
Nanomolar Detection

scholarly journals Fluorescent Chemosensors Based on Polyamine Ligands: A Review

Chemosensors ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Begoña Verdejo ◽  
Mario Inclán ◽  
María Paz Clares ◽  
Irene Bonastre-Sabater ◽  
Mireia Ruiz-Gasent ◽  
...  
Keyword(s):  
Metal Ions ◽  
Aqueous Media ◽  
Water Soluble ◽  
Visual Response ◽  
Fluorescent Chemosensors ◽  
Summary Table ◽  
Design Synthesis ◽  
Biological Studies ◽  
Biological Interest ◽  
Recent Developments

Polyamine ligands are water-soluble receptors that are able to coordinate, depending on their protonation degree, either metal ions, anionic, or neutral species. Furthermore, the presence of fluorescent signaling units allows an immediate visual response/signal. For these reasons, they can find applications in a wide variety of fields, mainly those where aqueous media is necessary, such as biological studies, wastewater analysis, soil contamination, etc. This review provides an overview of the recent developments in the research of chemosensors based on polyamine ligands functionalized with fluorescent signaling units. The discussion focuses on the design, synthesis, and physicochemical properties of this type of fluorescent chemosensors in order to analyze the applications associated to the sensing of metal ions, anions, and neutral molecules of environmental and/or biological interest. To facilitate a quick access and overview of all the chemosensors covered in this review, a summary table of the chemosensor structures and analytes, with all the corresponding references, is also presented.

scholarly journals Highly Selective Fluorescent Probe for the Detection of Copper (II) and Its Application in Live Cell Imaging

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Zhihao Guo ◽  
Xiuji Wang ◽  
Pei Wei ◽  
Yihua Gao ◽  
Qin Li
Keyword(s):  
Metal Ions ◽  
Fluorescent Probe ◽  
Fluorescence Imaging ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Rhodamine 6G ◽  
Aqueous Media ◽  
Living Cells ◽  
Sensitivity And Selectivity ◽  
Photophysical Studies

The development of fluorescent methods for the detection of metal ions is of great importance due to their diverse environmental and biological roles. Herein, a rhodamine 6G-based off-on fluorescent probe (L1) with a t-butyl pyrrole moiety as the recognition site was designed and synthesized. Photophysical studies show that L1 exhibits excellent sensitivity and selectivity towards Cu2+ to other metal ions in neutral acetonitrile aqueous media. Mechanism studies suggest that the recognition process may associate with a Cu2+ promoted hydrolysis reaction of L1. Furthermore, L1 has been successfully applied in fluorescence imaging of Cu2+ ion in living cells.

Versatile Colorimetric Chemosensor Based on Bis(rhodamine) B Hydrazone for Rapid Detection of Multi-Analytes (Fe3+, Bi3+, Cu2+, and Hg2+) in Aqueous Media

2020 ◽  
Vol 73 (11) ◽  
pp. 1112
Author(s):  
Tamer El Malah ◽  
Hany F. Nour
Keyword(s):  
Rhodamine B ◽  
Metal Ion ◽  
Chemical Structure ◽  
Aqueous Media ◽  
Spectroscopic Techniques ◽  
Ion Interactions ◽  
Colour Changes ◽  
Metal Ion Interactions ◽  
Job's Method ◽  
Naked Eye Detection

A new bis(rhodamine) B hydrazone L, bearing two rhodamine chromophores, has been designed and synthesised in 70% yield. The chemical structure of the new ligand L was characterised using different spectroscopic techniques. The receptor L was utilised for rapid ‘naked eye’ detection of Fe3+, Bi3+, Cu2+, and Hg2+ in THF–H2O (1:1, v/v) by displaying significant colour changes. The mechanism of detection of metal ions was based on the ring-opening of the spirolactam rings of L upon recognition. UV/Vis spectrometry was employed to investigate L–metal ion interactions in THF–H2O (1:1, v/v). The stoichiometries of the complexes were determined using Job’s method, which revealed 1:2L–metal ion stoichiometries in the case of L–(Fe3+/Bi3+/Hg2+) complexes, while a 1:1L–metal ion stoichiometry was recognised for the L–Cu2+ complex. 1H NMR spectroscopy was applied to study the L–metal ion interactions in DMSO-d6 and results are presented.

PREDICTIVE SIMULATION AND OPTIMIZATION ORIENTED MODELING FOR THE EXTRACTION OF METAL IONS FROM SOLUTIONS INTO A NOVEL BIS-SCHIFF BASE

2019 ◽  
pp. 1-8
Author(s):  
F. S. Nworie ◽  
S. O. Ngele ◽  
J. C. Onah
Keyword(s):  
Metal Ions ◽  
Metal Concentration ◽  
Acid Concentration ◽  
Aqueous Media ◽  
Industrial Effluents ◽  
Ligand Concentration ◽  
Simulation And Optimization ◽  
Chemometric Technique ◽  
Model Equations ◽  
Level Of Significance

Metal ions present in waste samples, industrial effluents, acid mines and other aqueous media constitute a serious challenge in different human activities. Solvent extraction a technique for preconcentration, separation and identification of trace amount of metal ions coupled with multivariate chemometric technique was used for the determination of Fe(II) and Cr(III) from solutions in the presence of bis(salicylidene)ethylenediamine (SALEN). The influence of main extraction variables affecting the extraction efficiency was simultaneously studied and regression model equations illustrating the relationship between variables predicted. The extraction parameters (time of extraction, acid concentration, ligand concentration, temperature and metal concentration) were optimized using experimental designs with the contributions of the various parameters to extraction of the metal ions bound to the complexone evaluated using SPSS19.0 software. The statistically determined simulated models for the parameters were R2 = 0.946, 0.727, 0.793, 0.53, 0.53, 1.000 and F- values of 70.400, 13. 285, 15.348, 4.646 and 2.569×105 respectively for time of extraction, acid concentration, ligand concentration, temperature and metal concentration for Cr (III). For Fe (II), R2 = 0.243, 0.371, 0.519, 0.446, 1.000 and F-values of 0.964, 2.953, 4.310, 3.216 and 2.516×105 for time of extraction, acid concentration, ligand concentration, temperature and metal concentration respectively. The level of significance of the models as predicted was both lower than 5% making it feasible, efficient, reproducible and accurate. This means that metal ions at the conditions stated could be removed from waste samples, industrial effluents, acid mines and other aqueous media with extension in industrial scale application.

Various Sensing Mechanisms for the Design of Naphthalimide based Chemosensors Emerging in Recent Years

2020 ◽  
Vol 13 (4) ◽  
pp. 262-289
Author(s):  
Duraisamy Udhayakumari
Keyword(s):  
Metal Ions ◽  
Intramolecular Charge Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Intramolecular Proton Transfer ◽  
Biological Applications ◽  
Fluorescent Chemosensors ◽  
The Past ◽  
Photo Induced Electron Transfer ◽  
Displacement Approach

In the design of novel fluorescent chemosensors, investigation of new sensing mechanisms between recognition and signal reporting units is of increasing interest. In recent years, a smart chemosensor probe containing a 1,8-naphthalimide moiety could be developed as a fluorescent and colorimetric sensor for toxic anions, metal ions, biomolecules, nitroaromatics, and acids and be further applied to monitor the relevant biological applications. In this field, several problems and challenges still exist. This critical review is mainly focused on various sensing mechanisms that have emerged in the past few years, such as Photo-Induced Electron Transfer (PET), Intramolecular Charge Transfer (ICT), Fluorescence Resonance Energy Transfer (FRET), Excited-State Intramolecular Proton Transfer (ESIPT), hydrogen bonding and displacement approach. The review concludes with some current and future perspectives, including the use of the naphthalimides for sensing anions, metal ions, biomolecules, nitroaromatics and acids and their potential uses in various fields.

Hybrid nanoparticle based fluorescence switch for recognition of ketoprofen in aqueous media

2020 ◽  
Vol 5 (8) ◽  
pp. 1428-1436
Author(s):  
Anu Saini ◽  
Manpreet Kaur ◽  
Mayank ◽  
Anil Kuwar ◽  
Navneet Kaur ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Fluorescent Chemosensors ◽  
Fluorescence Switch ◽  
Nanomolar Detection ◽  
Hybrid Nanoparticle

Hybrid nanoassembly, fluorescent chemosensors, selective response to ketoprofen, and nanomolar detection.

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