Sugar thiacrown-ether appended calix[4]arene as a selective chemosensor for Fe2+and Fe3+ions

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88038-88044 ◽  
Author(s):  
Irene Ling ◽  
Rauzah Hashim ◽  
Karem J. Sabah
Keyword(s):  
Metal Ions ◽  
High Selectivity ◽  
Fluorescent Chemosensor ◽  
Thiacrown Ether

A fluorescent chemosensor derived from sugar-thiacrown-ether appended calix[4]arene coupled with pyrene units was synthesized. Upon addition of Fe2+or Fe3+the fluorescence intensities are quenched indicating high selectivity for these metal ions.

scholarly journals Novel PSMA-Coated On-Off-On Fluorescent Chemosensor Based on Organic Dots with AIEgens for Detection of Copper (II), Iron (III) and Cysteine

Polymers ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 786 ◽  
Author(s):  
Rui Jiang ◽  
Na Liu ◽  
Fan Li ◽  
Wensheng Fu ◽  
Yun Zhou ◽  
...  
Keyword(s):  
Metal Ions ◽  
High Selectivity ◽  
Detection Limits ◽  
Linear Range ◽  
Fluorescent Chemosensor ◽  
Fluorescent Detection ◽  
Precipitation Method ◽  
Wide Linear Range

Herein, a novel on-off-on fluorescent chemosensor for copper (II) ion (Cu2+), iron (III) ion (Fe3+) and cysteine is developed simply by the nano-precipitation method. The prepared organic dots with AIEgens (AIE dots) are advantageous over other metal ions in detecting Cu2+, Fe3+ with high selectivity and sensitivity by forming agglomerations (on-off). The agglomerations formed by AIE dots and Cu2+ redistributed and the fluorescence was obviously recovered in the presence of cysteine (off-on). This sensor has a wide linear range for Cu2+, Fe3+ and cysteine. The fluorescent detection limits of AIE dots are calculated to be 107 nM for Cu2+, 120 nM for Fe3+ and 78 nM for cysteine, respectively. These results indicate that the AIE dots can be used as a potential probe for Cu2+, Fe3+ and cysteine detection.

The design of a simple fluorescent chemosensor for Al3+/Zn2+via two different approaches

2015 ◽  
Vol 7 (2) ◽  
pp. 716-722 ◽  
Author(s):  
Jing-can Qin ◽  
Long Fan ◽  
Bao-dui Wang ◽  
Zheng-yin Yang ◽  
Tian-rong Li
Keyword(s):  
Metal Ions ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Fluorescent Chemosensor ◽  
Wide Range

In this study, we have developed a simple fluorescent sensor, 7-(2′,4′-dihydroxybenzylideneimino)-4-methyl coumarin, which shows a high selectivity towards Al3+/Zn2+over a wide range of metal ions.

scholarly journals A Novel Ruthenium(II) Polypyridyl Complex Bearing 1,8-Naphthyridine as a High Selectivity and Sensitivity Fluorescent Chemosensor for Cu2+ and Fe3+ Ions

Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4032 ◽  
Author(s):  
Chixian He ◽  
Shiwen Yu ◽  
Shuye Ma ◽  
Zining Liu ◽  
Lifeng Yao ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Metal Ions ◽  
High Selectivity ◽  
Detection Limits ◽  
Fluorescent Chemosensor ◽  
Polypyridyl Complex ◽  
Elemental Analyses

A novel ruthenium(II) polypyridyl complex bearing 1,8-naphthyridine was successfully designed and synthesized. This complex was fully characterized by EI-HRMS, NMR, and elemental analyses. The recognition properties of the complex for various metal ions were investigated. The results suggested that the complex displayed high selectivity and sensitivity for Cu2+ and Fe3+ ions with good anti-interference in the CH3CN/H2O (1:1, v/v) solution. The fluorescent chemosensor showed obvious fluorescence quenching when the Cu2+ and Fe3+ ions were added. The detection limits of Cu2+ and Fe3+ were 39.9 nmol/L and 6.68 nmol/L, respectively. This study suggested that this Ru(II) polypyridyl complex can be used as a high selectivity and sensitivity fluorescent chemosensor for Cu2+ and Fe3+ ions.

scholarly journals Tuning the sensitivity towards mercury via cooperative binding to d-fructose: dual fluorescent chemosensor based on 1,8-naphthyridine-boronic acid derivative

RSC Advances ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 14862-14870
Author(s):  
Marina Rajadurai ◽  
E. Ramanjaneya Reddy
Keyword(s):  
Metal Ions ◽  
Acid Derivative ◽  
Boronic Acid ◽  
Toxic Metal ◽  
Fluorescent Chemosensor ◽  
Cooperative Binding ◽  
Toxic Metal Ions

This new dual d-fructose–mercury chemosensor is the first example of utilizing boronic acid–diol complexation for enhancement of the sensor's sensitivity towards toxic metal ions.

scholarly journals A multifunctional selective “turn-on” fluorescent chemosensor for detection of Group IIIA ions Al3+, Ga3+ and In3+

2018 ◽  
Vol 17 (9) ◽  
pp. 1247-1255 ◽  
Author(s):  
Hyo Jung Jang ◽  
Ji Hye Kang ◽  
Dongju Yun ◽  
Cheal Kim
Keyword(s):  
Metal Ions ◽  
Fluorescent Chemosensor ◽  
Selective Recognition ◽  
Turn On

A versatile chemosensor was developed for highly distinguishable and selective recognition of group IIIA metal ions (Al3+, Ga3+ and In3+).

Xanthurenic acid: a natural ionophore with high selectivity and sensitivity for potassium ions in an aqueous solution

2016 ◽  
Vol 40 (3) ◽  
pp. 1930-1934 ◽  
Author(s):  
M. Raju ◽  
Tapasya J. Patel ◽  
Ratish R. Nair ◽  
Pabitra B. Chatterjee
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Metal Ions ◽  
High Selectivity ◽  
Xanthurenic Acid ◽  
Potassium Ions ◽  
Turn On ◽  
Tryptophan Metabolite

Synopsis: A well-known tryptophan metabolite, xanthurenic acid, a natural non-fluorescent intermediate siderophore, showed a very selective turn-on response to K+ over other competing metal ions and the detection limit of this natural ionophore was found to be 53 nM at physiological pH.

scholarly journals A water-soluble fluorescent chemosensor based on Asp functionalized naphthalimide for successive detection Fe3+ and H2PO4−

2018 ◽  
Vol 96 (4) ◽  
pp. 363-370 ◽  
Author(s):  
You-Ming Zhang ◽  
Xiao-Peng Chen ◽  
Guo-Yan Liang ◽  
Kai-Peng Zhong ◽  
Hong Yao ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Metal Ions ◽  
Aspartic Acid ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Water Solution ◽  
Water Soluble ◽  
Selective Recognition ◽  
Actual Usage ◽  
Quenching Process

The selective recognition of target ions in water is very important and the development of novel water-soluble chemosensor is still an intriguing challenge. Herein, a novel water-soluble fluorescent sensor based on aspartic acid (Asp) functionalized 1,8-naphthalimide derivative (Asp-NI) has been designed and synthesized. The sensor Asp-NI could dissolve in water and successively detect Fe3+ and H2PO4− in water solution with high selectivity and sensitivity. The detection limits are 4.97 × 10−7 mol/L for Fe3+ and 5.27 × 10−6 mol/L for H2PO4−. Other coexistent competitive metal ions (Hg2+, Ag+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+, and Mg2+) showed no interference in the Fe3+ detection process. The sensor Asp-NI could act as a Fe3+ and H2PO4− controlled “On–Off–On” fluorescent switch. More interestingly, the Fe3+ induced fluorescence quenching process could be totally reversed by the addition of H2PO4−, this “On–Off–On” switching process could be repeated several times with little fluorescence loss. Notably, the actual usage of sensor Asp-NI was further demonstrated by test kits.

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