Fluorescent and chromogenic probes bearing salicylaldehyde hydrazone functionality for cyanide detection in aqueous solution

Sun, Yue; Liu, Yunlong; Guo, Wei

doi:10.1016/j.snb.2009.09.038

Cited by 116 publications

(26 citation statements)

References 38 publications

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“…45,40,35,30,25, and 20 µ M were prepared by taking the required amounts from the standard stock solution of RECM (5.0 × 10 −4 M) using a micropipette and adding to the volumetric flasks in the way that the total concentrations of Cu 2+ and RECM in each flask, was equivalent to 100 µ M. After adjusting the final volume with CH3CN, the resulting solutions were prepared to be measured on a fluorescence spectrophotometer as previously.…”

Section: Selectivitymentioning

confidence: 99%

“…As shown in Figure 4a To that end, the emission intensity of RECM without Cu 2+ was measured by 10 times and the standard deviation of blank measurements was determined. The LOD of RECM was found to be 0.21 µ M based on the definition by IUPAC ( = 3 ⁄ , where is the standard deviation of blank measurements and is the slope between intensity versus sample concentration) [30] which is less To date, various Cu 2+ -rhodamine-based chemosensors were developed which involved some negligible interferences of competitive cations [24][25][26][27]. On the periodic table of elements, the three transition cations Cu 2+ , Zn 2+ and Ni 2+ lie in the same period and are next to each other [26].…”

Section: Optical Sensing Propertiesmentioning

confidence: 99%

“…To that end, the emission intensity of RECM without Cu 2+ was measured by 10 times and the standard deviation of blank measurements was determined. The LOD of RECM was found to be 0.21 µM based on the definition by IUPAC (LOD = 3σ bi /m, where σ bi is the standard deviation of blank measurements and m is the slope between intensity versus sample concentration) [30] which is less than the maximum contaminant level goal (MCLG) of Cu 2+ (1.3 ppm equals to 20.46 µM) in drinking water recommended by the US Environmental Protection Agency (USEPA) [31]. RECM shows an acceptable efficiency in terms of LOD in comparison with several types of research which have been done into the designation of optical chemosensors to detect and determine Cu 2+ in aqueous media over the past decades.…”

Section: Optical Sensing Propertiesmentioning

confidence: 99%

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Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

et al. 2017

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Abstract:A new rhodamine-B carbonyl-morpholine derivative (denoted as RECM) was prepared by a two-step synthesis procedure. The employed method allowed a lactam ring development of rhodamine-B and ethylenediamine to demonstrate a facile amide bond formation. The obtained RECM was confirmed by 1 H NMR, 13 C NMR, and mass spectrometry analysis. RECM was formed to detect copper ion (Cu 2+ ) due to its problematic toxicity features in aquatic ecosystems. It showed a high selectivity toward Cu 2+ in comparison with some environmentally relevant alkali, alkaline earth, and transition metal cations at 50 µM in acetonitrile. Moreover, non-fluorescent RECM showed fluorescence intensity and UV-Vis absorbance increases in the presence of Cu 2+ with high linear dependent coefficients (R 2 = 0.964 and R 2 = 0.982 respectively) as well as a color change from colorless to pink owing to the ring opening of the rhodamine spirolactam form. Binding capability experiments presented a clear 1:1 stoichiometry of RECM-Cu 2+ complex with the binding constant (K a ) as 2.25 × 10 4 M −1 . The calculation of limits of detection (LOD) was 0.21 µM based on the linear regression method, which is below the maximum contaminant level goal (MCLG) value of Cu 2+ (1.3 ppm equals to 20.46 µM) in drinking water. These characteristics make the RECM a promising candidate for the real-time detection of toxic Cu 2+ in environmental monitoring applications.

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Section: Selectivitymentioning

confidence: 99%

Section: Optical Sensing Propertiesmentioning

confidence: 99%

Section: Optical Sensing Propertiesmentioning

confidence: 99%

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Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

et al. 2017

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“…Limit of detection (LOD) cyanide ion in sensor 1 was measured by 3σ/m in DMSO through the UV-vis titration experiment [13][14][15]. Color change and UV-vis spectra are shown Fig.…”

Section: Ionochromic Experimentsmentioning

confidence: 99%

Styrene and Azo-Styrene Based Colorimetric Sensors for Highly Selective Detection of Cyanide

Prestiani

Purwono

2017

Indones. J. Chem.

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“…Figure 6c and 6d shows the luminescence intensity of [Ru(dpp) 3 ]Cl 2 on the PhC and on the glass, respectively and it was almost linear when the oxygen concentration ranged from 0% to 3%. Through the calculation, the LOD (3S/N: S, standard deviation; N, slope) 31 for oxygen on the PhC and on the glass are 5 ppm and 497 ppm, respectively. Interestingly, the samples of the [Ru(dpp) 3 ]Cl 2 on the PhC demonstrate a much lower LOD of oxygen than that on the glass.…”

Section: Temperature-dependent Luminescence and Dynamicsmentioning

confidence: 99%

320-fold luminescence enhancement of [Ru(dpp)3]Cl2 dispersed on PMMA opal photonic crystals and highly improved oxygen sensing performance

Zhou

et al. 2014

Light Sci Appl

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Ru complexes ([Ru(dpp) 3 ]Cl 2 ) were spin coated on poly(methyl methacrylate) (PMMA) opal photonic crystals (PhCs), and a ,320-fold luminescence enhancement was observed compared to that on glass, which is the largest luminescence enhancement of dye molecules by the modulation of three-dimensional (3D) PhCs reported until now. The enhancement mechanism was carefully examined and it was shown that the luminescence of [Ru(dpp) 3 ]Cl 2 depended on the molecule concentration and temperature. It can be concluded that the suppressed non-radiative relaxation among the molecules and the field enhancement both contribute significantly to the luminescence enhancement. The PMMA PhC/Ru complex composites were then tested for their intracellular oxygen sensing and cell imaging properties; these composites effectively improved the limit of detection (LOD) and the brightness of the cell images.

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Fluorescent and chromogenic probes bearing salicylaldehyde hydrazone functionality for cyanide detection in aqueous solution

Cited by 116 publications

References 38 publications

Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

Fluorescence Chemosensory Determination of Cu2+ Using a New Rhodamine–Morpholine Conjugate

Styrene and Azo-Styrene Based Colorimetric Sensors for Highly Selective Detection of Cyanide

320-fold luminescence enhancement of [Ru(dpp)3]Cl2 dispersed on PMMA opal photonic crystals and highly improved oxygen sensing performance

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