A fluorescent and colorimetric probe based on isatin-appended rhodamine for the detection of Hg2+

Chen, Jiayi; Wang, Enju

doi:10.1007/s40242-016-6001-1

Cited by 19 publications

(10 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As isatin 1 is a colored compound,its potential in anion recognition/sensing was first monitored by naked eye experiments. This method of sensing is highly valued due to its low cost and easy detection without the help of any instrument or equipment [29,[42][43][44][45][46]. Interestingly, the addition of one equivalent of Fˉ anion to the solution of isatin 1 resulted in a dramatic color change from pale yellow to violet, clearly visible to the naked eye.…”

Section: Resultsmentioning

confidence: 99%

“…This diversity of function of the fluoride anion, both the benefits and perniciousness, makes its detection of considerable interest. In this context, organic colorimetric chemosensors are of particular importance due to their simplicity [29,[42][43][44][45][46]. Color changes visible to the naked eye are preliminarily used as signals for detection of anions without any equipment being required.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from its applications in medicinal chemistry [47], it has been extensively employed as a signaling unit in various receptors [51,52] and some of its derivatives have also been investigated as chemosensors for anion detection [53,54]. Careful analysis of its features reveals that isatin 1 has an acidic NH group and intense color which are prime requirements for a chemosensor [29,[42][43][44][45][46]. The interesting structure combined with our recent interest in isatin-derived compounds [55][56][57][58][59] and in developing chemosensors [6,60] motivated us to investigate the behavior of commercially available isatin as an anion sensor.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Isatin as a simple, highly selective and sensitive colorimetric sensor for fluoride anion

Haider

Ahmed

Faisal

et al. 2020

Heterocyclic Communications

View full text Add to dashboard Cite

Herein, we report the fluoride anion sensing properties of a commercially available and inexpensive organic compound, isatin, which is found to be a highly selective and sensitive sensor. In naked-eye experiments, by addition of fluoride anions, isatin shows a dramatic color change from pale yellow to violet at room temperature, while the addition of other anions, i.e. $\mathrm{Cl}^-,$$\mathrm{Br}^-,\mathrm I^-,\mathrm{ClO}_4^-,{\mathrm H}_2\mathrm{PO}_4^-\,\mathrm{and}\,\mathrm{PF}_6^-,$did not induce any colour change. Additionally, recognition and titration studies have also been done through UV/Vis spectroscopy. Isatin displayed a new absorption band at 533 nm after the addition of fluoride anions, which is presumably due to acid-base interaction between isatin and fluoride anions, while other anions did not trigger noticeable spectral changes. The detection limit was observed to be 0.367 ppm. DFT calculations were also performed to further explain the behavior of receptor 1 towards the Fˉ anion. Owing to high sensitivity and selectivity, isatin can be useful in the detection of biologically or environmentally important fluoride anions at very low concentration.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Isatin as a simple, highly selective and sensitive colorimetric sensor for fluoride anion

Haider

Ahmed

Faisal

et al. 2020

Heterocyclic Communications

View full text Add to dashboard Cite

show abstract

“…However, it is difficult to achieve turn-on fluorescent sensing of cupric ion due to its paramagnetic nature which leads to vigorous fluorescence quenching. [3][4][5][6][7][8] During the course of our ongoing efforts to develop fluorescent probes for mental ions [9][10][11] , we have firstly found that some probes containing S-donor show turn on fluorescence responses to Cu 2+ , and so the S-donor may play an important role in protecting from Cu 2+ -induced fluorescence quenching. [12][13][14] Following this idea, a rationally designed fluorescent probe containing S-donor (1) was synthesized by incorporating 3-acetyl-7-hydroxycoumarin and 2-hydrazinylbenzo[d]thiazole for the fluorescence turn-on detection of cupric ion in the present work (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor

Qiao¹,

Zhao²,

Wang³

2021

ACSi

Self Cite

View full text Add to dashboard Cite

The fluorescent turn-on detection of metal ions is highly desirable for public health and environmental security. Herein, we report a rationally designed fluorescent probe (1) for the detection of Cu2+ synthesized by integrating 2-hydrazinylbenzothiazole with 3-acetyl-7-hydroxycoumarin. The probe alone is non-fluorescent due to the isomerization of C=N in the excited state. The addition of Cu2+ can cause a delayed fluorescence enhancement. A comparative study of 1 and its analogues indicated that the turn-on fluorescence response was thanks to the sulfur atom coordinating to Cu2+. The response delay of 1 in sensing Cu2+ was ascribed to the gradual transition from N-coordination to S-coordination (N and S in thiazole moiety). The proposed new function of S-donor would provide a new approach for the turn-on fluorescence sensation of Cu2+.

show abstract

“…Compared with these analytical methods, fluorescent techniques have been a promising bio-imaging technique in fields of life sciences, environmental monitoring, and disease diagnosis for their excellent performance targeting metal ions with low cost, good biocompatibility, high sensitivity, selectivity and real-time imaging. Some fluorescent probes have been designed for recognition of Hg 2+ ions in recent years [19,20,21,22,23,24,25], most of which utilize general fluorophores as signal-output groups such as BODIPY, 1,8-napthalimide, cyanine, coumarin, fluorescein, pyrene, anthracene, and rhodamine etc. [26].…”

Section: Introductionmentioning

confidence: 99%

A Novel Ratiometric Fluorescent Probe for Mercury (II) ions and Application in Bio-imaging

Gao

Jiao

et al. 2019

Molecules

View full text Add to dashboard Cite

Since the accumulation of mercury (II) ions in the environment and ecosystem causes serious problems to environment and disease, the recognition of Hg2+ ions and its bio-imaging is of high importance. In sight of the advantages of fluorescence probes, a new probe (PMH) was facilely synthesized by incorporating phenylimidazole fluorophore and 3-methyl-2- benzothiazolinone hydrazone hydrochloride monohydrate. The PMH probe exhibited a ratiometric response for Hg2+ ions with fluorescence intensity increasing at 520 nm and decreasing at 445 nm simultaneously. The PMH probe interacted with Hg2+ ions in seconds with high optical stability and showed good selectivity over other metal ions. In addition, the probe has excellent biocompatibility and imaging performance in cells and zebrafish.

show abstract

A fluorescent and colorimetric probe based on isatin-appended rhodamine for the detection of Hg2+

Cited by 19 publications

References 28 publications

Isatin as a simple, highly selective and sensitive colorimetric sensor for fluoride anion

Isatin as a simple, highly selective and sensitive colorimetric sensor for fluoride anion

Benzothiazolylhydrazone-Based Turn-on Fluorescent Probe for Detecting Cu2+: S-donor as a Cu2+-induced Fluorescence Quenching Inhibitor

A Novel Ratiometric Fluorescent Probe for Mercury (II) ions and Application in Bio-imaging

Contact Info

Product

Resources

About