A novel reversible fluorescent probe based on naphthalimide for sequential detection of aluminum (Al3+) and fluoride (F-) ions and its applications

2021 ◽  
Author(s):  
Shanzhu Zhang ◽  
Yunlan Gu ◽  
Zongqian Shi ◽  
Nan Lu ◽  
Hai-Yan Xu
Keyword(s):  
Schiff Base ◽  
Fluorescent Probe ◽  
High Selectivity ◽  
Sequential Detection ◽  
Naked Eye ◽  
One Step ◽  
The One

A new Schiff base fluorescent probe NBP derived from the one-step condensation strategy of 2-butyl-6-hydroxy-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline-5-carbaldehyde and N-(2-(hydrazinecarbonyl)phenyl)benzamide was synthesized and characterized. NBP exhibited high selectivity toward Al3+ along with naked-eye...

scholarly journals Simple and Visible Detection of Novel Astroviruses Causing Fatal Gout in Goslings Using One-Step Reverse Transcription Polymerase Spiral Reaction Method

2020 ◽  
Vol 7 ◽  
Author(s):  
Jun Ji ◽  
Qinxi Chen ◽  
Zhengli Yu ◽  
Xin Xu ◽  
Xinhao Mu ◽  
...  
Keyword(s):  
Reverse Transcription ◽  
Cost Effective ◽  
Pcr Primers ◽  
Probit Regression ◽  
Conventional Pcr ◽  
Specific Detection ◽  
Isothermal Method ◽  
Naked Eye ◽  
One Step ◽  
The One

In this study, a one-step isothermal method combining polymerase spiral reaction (PSR) with reverse transcription (RT-PSR) was established for rapid and specific detection of novel astroviruses causing fatal gout in goslings (N-GoAstV). The one-step RT-PSR was accomplished at the optimal temperature of 62°C and time of 40 min and used primers simply designed as conventional PCR primers, and the results of detection were visible to the naked eye. The detection limit of PSR was above 34.7 copies/μL at a 95% probability level according to probit regression analysis. The assay specifically detected N-GoAstV, and no other reference viruses were detected. These results suggest that the newly established RT-PSR assay could, in one step, accomplish reverse-transcription, amplification, and result determination providing a visible, convenient, rapid, and cost-effective test that can be carried out onsite, in order to ensure timely quarantine of N-GoAstV-infected birds, leading to effective disease control.

scholarly journals Polydentate Schiff Base Ligands and Their La(III) Complexes: Synthesis, Characterization, Antibacterial, Thermal, and Electrochemical Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Ali E. Şabik ◽  
Muharrem Karabörk ◽  
Gökhan Ceyhan ◽  
Mehmet Tümer ◽  
Metin Dığrak
Keyword(s):  
Antimicrobial Activity ◽  
Schiff Base ◽  
Electrochemical Properties ◽  
Antimicrobial Activities ◽  
Nitrogen Atmosphere ◽  
Spectroscopic Methods ◽  
Schiff Base Ligands ◽  
One Step ◽  
The One ◽  
Reversible Transfer

We synthesized the Schiff base ligands H2L1–H2L4 and their La(III) complexes and characterized them by the analytical and spectroscopic methods. We investigated their electrochemical and antimicrobial activity properties. The electrochemical properties of the ligands H2L1–H2L4 and their La(III) complexes were studied at the different scan rates (100 and 200 mV), different pH ranges (), and in the different solvents. The electrooxidation of the Schiff base ligands involves a reversible transfer of two electrons and two protons in solutions of pH up to 5.5, in agreement with the one-step two-electron mechanism. In solutions of pH higher than 5.5, the process of electrooxidation reaction of the Schiff base ligands and their La(III) complexes follows an ECi mechanism. The antimicrobial activities of the ligands and their complexes were studied. The thermal properties of the metal complexes were studied under nitrogen atmosphere in the range of temperature 20–1000°C.

An efficient non-reaction based colorimetric and fluorescent probe for the highly selective discrimination of Pd0 and Pd2+ in aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60546-60549 ◽  
Author(s):  
Lubna Rasheed ◽  
Muhammad Yousuf ◽  
Il Seung Youn ◽  
Genggongwo Shi ◽  
Kwang S. Kim
Keyword(s):  
Fluorescent Probe ◽  
High Selectivity ◽  
Aqueous Media ◽  
Oxidation States ◽  
Probe Molecule ◽  
Naked Eye ◽  
Fluorogenic Probe ◽  
The Difference

A novel anthraquinone-imidazole based colorimetric and fluorogenic probe 1 discriminates the oxidation states of Pd0 and Pd2+ by naked eye with high selectivity in aqueous media due to the difference in coordination in the pocket of probe molecule.

scholarly journals Detection of organic amines using a ratiometric chromophoric fluorescent probe with a significant emission shift

2020 ◽  
Vol 44 (7-8) ◽  
pp. 475-481
Author(s):  
Dan Wu ◽  
Yi Liu ◽  
Fei Zheng ◽  
Shi-Qi Rong ◽  
Tao Yang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Nucleophilic Addition ◽  
High Selectivity ◽  
Color Change ◽  
Intramolecular Charge Transfer ◽  
Signaling Mechanism ◽  
Eye Color ◽  
Naked Eye ◽  
Spectrometric Measurements ◽  
Organic Amines

Taking advantages of both the well-known α,β-unsaturated structure and the special nucleophilicity of organic amines toward its acceptor moieties, intramolecular charge transfer as a signaling mechanism is used to design and synthesize a new ratiometric chromophoric fluorescent probe (BI-CA-ID) with large emission shifts toward organic amines. This probe is employed for the detection of organic amines with high selectivity and sensitivity and a “naked-eye” color change (from red to colorless). Ultraviolet–visible and fluorescence spectrometric measurements are used to determine detection limits as low as 0.024 and 0.43 μM. Furthermore, nucleophilic addition of the amine on the α,β-unsaturated of BI-CA-ID indicated that the sensing mechanism occurs via interruption of the π-conjugation.

Solvent-Free Synthesis and Characterization of the Zn(II) Complexes with Amino Acid Schiff Base

2012 ◽  
Vol 455-456 ◽  
pp. 740-745
Author(s):  
W. Zhong ◽  
Guo Qing Zhong ◽  
Y. Zhang ◽  
Q. Zhong
Keyword(s):  
Schiff Base ◽  
Amino Acid ◽  
Zinc Ion ◽  
Solvent Free ◽  
Schiff Base Ligands ◽  
Coordination Numbers ◽  
Percentage Mass Loss ◽  
One Step ◽  
The One ◽  
Amino Acid Schiff Base

Three zinc (II) complexes of the amino acid Schiff base were synthesized by the one step reaction of amino acid with aldehyde, zinc acetate in solvent-free. The compositions and structures of the complexes were characterized by elemental analyses, FTIR, XRD, TG-DSC. The compositions of the complexes are ZnL•nH2O (L = sal-leu, sal-ala, van-leu; sal = salicylaldehyde; van = vanillic aldehyde; leu = leucine; ala = alanine). Infrared spectra of the complexes indicate that the Schiff base ligands are formed, zinc ion is coordinated to the Schiff base ligands as terdentate with O, O and N donors from carboxylic, phenolic and imino groups respectively, the coordination numbers of zinc ion is four. The possible pyrolysis reactions in the thermal decomposition process of the complexes, the experimental and calculated percentage mass loss are also given.

scholarly journals A Simple Turn-off Schiff Base Fluorescent Sensor for Copper (II) Ion and Its Application in Water Analysis

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1233
Author(s):  
Xing Zhang ◽  
Ling-Yi Shen ◽  
Qi-Long Zhang ◽  
Xian-Jiong Yang ◽  
Ya-Li Huang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Fluorescent Probe ◽  
Fluorescent Sensor ◽  
Tap Water ◽  
Condensation Reaction ◽  
Aqueous Media ◽  
Sensitivity And Selectivity ◽  
One Step ◽  
Fluorescence Titrations ◽  
Nmr Titrations

An aniline-functionalized naphthalene dialdehyde Schiff base fluorescent probe L with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a simple one-step condensation reaction and exhibited excellent sensitivity and selectivity towards copper(II) ions in aqueous media with a fluorescence “ turn-off ” phenomenon. The detection limit of the probe is 1.64 × 10−8 mol·L−1. Furthermore, according to the results of the UV-vis/fluorescence titrations, Job’s plot method and 1H-NMR titrations, a 1:2 stoichiometry was identified. The binding constant between L and Cu2+ was calculated to be Ka = 1.222 × 103. In addition, the AIEE fluorescent probe L could be applied to detection in real water samples with satisfactory recoveries in the range 99.10–102.90% in lake water and 98.49–102.37% in tap water.

A Ratiometric Fluorescent Probe Based on Carbon Dots and Bimetallic Nanoclusters for the Assay of Copper Gluconate and Copper Sulfate

NANO ◽  
2021 ◽  
pp. 2150114
Author(s):  
Yucong Fan ◽  
Weihua Yu ◽  
Yue Hu ◽  
Yunwen Liao ◽  
Xiaohui Jiang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Limit Of Detection ◽  
Molar Ratio ◽  
Cupric Sulfate ◽  
Selective Determination ◽  
Bimetallic Nanoclusters ◽  
One Step ◽  
The One

Doping Ag-enhanced and glutathione-stabilized Au nanoclusters (GSH–Ag/AuNCs) were prepared by the one-step ultraviolet radiation combined with microwave heating method. The effects of the molar ratio of Au–Ag and different types of energy suppliers on the fluorescent performance of GSH–Ag/AuNCs were studied in detail. After that, a new ratio fluorescent probe (RF-probe) based on the mixing of GSH–Ag/AuNCs with carbon dots (CDs) was designed for sensitive and selective determination of copper gluconate (CG) and cupric sulfate (CS). For the CDs–GSH–Ag/AuNCs RF-probe, the fluorescence (FL) of CDs (at 440[Formula: see text]nm) and that of alloy nanoclusters (NCs) (at 605[Formula: see text]nm) were, respectively, unaffected and strongly quenched in the presence of CG/CS at [Formula: see text][Formula: see text]nm coming from the dynamic quenching process. Corresponding linear ranges and limit of detection (LOD) of the RF-probe for the CG/CS assay were estimated to be 0.17–6.20/0.17–5.62[Formula: see text][Formula: see text]mol/L and 16.80/15.95[Formula: see text]nmol/L, respectively. Furthermore, the proposed RF-probe was successfully used for the assays of CG in CG tablets and CG additive, and CS in infant formula and CS additive, respectively.

Tb-MOF: a naked-eye and regenerable fluorescent probe for selective and quantitative detection of Fe3+and Al3+ions

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94622-94628 ◽  
Author(s):  
Mengfei Zhang ◽  
Jing Han ◽  
Haipeng Wu ◽  
Qing Wei ◽  
Gang Xie ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
High Selectivity ◽  
Quantitative Detection ◽  
Naked Eye

A unique Tb-MOF fluorescent probe has features that are visible to the naked-eye and can be regenerated; it presents high selectivity and sensitivity to the quantitative detection of Fe3+and Al3+ions.

One-step synthesis of 2,5-diformylfuran from monosaccharides by using lanthanum(iii) triflate, sulfur, and DMSO

2020 ◽  
Vol 56 (85) ◽  
pp. 13005-13008
Author(s):  
Quynh Nhu Ba Nguyen ◽  
Hao Anh Nguyen Le ◽  
Phat Duc Ly ◽  
Ha Bich Phan ◽  
Phuong Hoang Tran
Keyword(s):  
High Selectivity ◽  
Excellent Yield ◽  
One Step ◽  
The One

The one-step dehydration/oxidation of fructose afforded 2,5-diformylfuran in excellent yield with high selectivity.

One-step synthesis of a carbon dot-based fluorescent probe for colorimetric and ratiometric sensing of tetracycline

2020 ◽  
Vol 12 (42) ◽  
pp. 5097-5102
Author(s):  
Jing Xue ◽  
Na-Na Li ◽  
Dong-Mei Zhang ◽  
Cai-Feng Bi ◽  
Cun-Gang Xu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Fluorescent Probe ◽  
Butyric Acid ◽  
Carbon Dots ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Blue Fluorescence ◽  
Carbon Dot ◽  
Ratiometric Detection ◽  
One Step

Carbon dots (CDs) with blue fluorescence were synthesized by indole-3-butyric acid and l-tryptophan using a one-step hydrothermal method. The CDs were used as a fluorescent sensor with high selectivity for colorimetric and ratiometric detection of tetracycline (TC) in water.

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