A Long-Wavelength Fluorescent Chemodosimeter Selective for Cu(II) Ion in Water

Dujols, Virginie; Ford, Francis; Czarnik, Anthony W.

doi:10.1021/ja971221g

Cited by 951 publications

(458 citation statements)

References 4 publications

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“…38 Hydrolysis of the amide bond assisted the ring opening of colorless rhodamine B hydrazide to form a pink colored rhodamine B in the case of mercury in a similar manner to that of copper. 19 The rhodamine-B obtained from the above process is hydrophobic in nature, hence it can be preconcentrated using Triton X-114 as a micellar medium at room temperature. The rhodamine-B obtained was subjected to cloud point extraction before its spectrophotometric measurement.…”

Section: Resultsmentioning

confidence: 99%

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Malingappa

Kumar

2011

Anal. Methods

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The micellar mediated trace level estimation of mercury in industrial effluent sample by the rhodamine B hydrazide spirolactam ring opening process is described. The catalytic reaction of mercuric ion with colorless rhodamine B hydrazide to form pink colored rhodamine B through amide bond cleavage at pH 5 forms the basis of this reaction. The dye obtained was extracted from the aqueous phase into nonionic surfactant using Triton X-114 through cloud point formation and its absorbance was measured at 556 nm. The reaction conditions such as concentrations of rhodamine B hydrazide and Triton X-114, effect of NaCl concentration on cloud point temperature and the efficiency of extraction were optimized. The selectivity of the method towards mercury in the presence of various ions was studied. The validity of the method was examined by spiking real samples with known amounts of mercury and carrying out recovery studies. The results obtained by the proposed method were compared with the standard dithiazone method. The preconcentration and enrichment factors were found to be 5 and 12 respectively. The limit of detection and the linear range were found to be 1.4 ng ml À1 and 10-100 ng ml À1respectively. The relative standard deviation was found to be 0.35% at 20 ng ml À1.

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Section: Resultsmentioning

confidence: 99%

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Malingappa

Kumar

2011

Anal. Methods

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“…So, xanthene framework seems to be an ideal model to construct "turn-on" fluorescent chemosensors. Rhodamine B hydrazide the fluorescent chemodosimeter for Cu 2 þ was the first xanthene derivative utilized for metal ion detection [28]. This chemodosimeter showed an irreversible fluorescence enhancement toward Cu 2 þ in water with high selectivity.…”

Section: Introductionmentioning

confidence: 99%

A new rhodamine B based fluorometric chemodosimeter for Cu2+ ion in aqueous and cellular media

Kempahanumakkagaari

Ramakrishnappa

Malingappa

2014

Journal of Luminescence

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a b s t r a c tA simple, sensitive and selective fluorescent chemo dosimeter rhodamine B phenyl hydrazide (RBPH) for Cu 2 þ was proposed. This probe is non fluorescent and colorless but exhibits fluorescent enhancement at 580 nm and displayed color change from colorless to pink for Cu 2 þ in the pH range 1-6. Fluorescence microscope experimental results reveals that this chemo sensor is cell permeable and can be used for fluorescence imaging of Cu 2 þ ions in living cells. This probe can detect Cu 2 þ with good linear relationships from 10 to 100 nM with r ¼0.99971 then limit of detection was found to be 0.015 nM with 7 0.91% RSD at 10 nM concentrations.

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“…It is therefore vital to prepare effective and higher selectivity fluorescence chemosensors. (12) In this study, we developed a novel fluorescence sensor with better solubility in water and biocompatibility, and a large difference in the fluorescence response to different ions. The macrocyclic polyamine Cyclen containing an imidazolium salt group (MCP-ISG) was synthesized, and the fluorescence response characteristics of its complexes with Cu(II), Zn(II) and Co(II) in a medium of pyridine/water (1:1) were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Imidazolium-Salt-Based Fluorescent Chemosensor for Cu(II), Zn(II) and Co(II)

2008

Sensors and Materials

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A ligand of macrocyclic polyamine with an imidazolium salt group (MCP-ISG) and its Cu(II), Zn(II) and Co(II) metallic complexes were synthesized, and MCP-ISG was used as a chelation-enhanced fluorophore. The complexes of Cu(II), Zn(II) and Co(II) have different intensities of fluorescence response in a solution of pyridine/water (1:1). The fluorescence intensity of Cu(II) complex was enhanced in the solution while those of Co(II) and Zn(II) complexes were weakened markedly, with the Zn(II) complex showing the larger reduction. The interaction and fluorescence emission mechanisms of the ligand with the cations are also disccussed in this paper.

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A Long-Wavelength Fluorescent Chemodosimeter Selective for Cu(II) Ion in Water

Cited by 951 publications

References 4 publications

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

A new rhodamine B based fluorometric chemodosimeter for Cu2+ ion in aqueous and cellular media

Imidazolium-Salt-Based Fluorescent Chemosensor for Cu(II), Zn(II) and Co(II)

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