Oxidized Bis(indolyl)methane:  A Simple and Efficient Chromogenic-Sensing Molecule Based on the Proton Transfer Signaling Mode

He, Xiaoming; Hu, Shuzhen; Li, Kai; Guo, Yong; Xu, Jian; Shao, Shijun

doi:10.1021/ol052770r

Cited by 235 publications

(98 citation statements)

References 43 publications

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“…The results corroborated the absorption and fluorescence spectroscopy experiments. The observations from spectroscopic and color studies of NpTP upon addition of F − were attributed to hydrogen bonding, which is consistent with previous studies on hydrogen bonding interactions between the sensor and the analyte [24,49,73,74]. …”

Section: Color Studiessupporting

confidence: 90%

Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing

et al. 2018

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Detailed Nuclear Magnetic Resonance (NMR) spectroscopy investigations on a novel naphthalene-substituted 1,2,3-triazole-based fluorescence sensor provided evidence for the "turn-on" detection of anions. The one-step, facile synthesis of the sensors was implemented using the "Click chemistry" approach in good yield. When investigated for selectivity and sensitivity against a series of anions (F − , Cl − , Br − , I − , H 2 PO 4 − , ClO 4 − , OAc − , and BF 4 − ), the sensor displayed the strongest fluorometric response for the fluoride anion. NMR and fluorescence spectroscopic studies validate a 1:1 binding stoichiometry between the sensor and the fluoride anion. Single crystal X-ray diffraction evidence revealed the structure of the sensor in the solid state.

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Section: Color Studiessupporting

confidence: 90%

Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing

et al. 2018

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“…A 1% (w/v) Triton X-114 (E. Merck, Darmstadt, Germany) was prepared by dissolving 1.0 g of Triton X-114 in 100-mL volumetric flask with stirring. The ligand, 3-((indolin-3-yl)(phenyl)methyl)indoline (IYPMI) (scheme 1) was synthesized according to literature [22]. …”

Section: Reagentsmentioning

confidence: 99%

“…The small volume of the surfactant-rich phase obtained with this methodology permits the design of extraction schemes that are simpler, cheaper, more highly efficient and more environmentally friendly than those extractions that use organic solvents. Cloud point methodology practical application of surfactants in analytical chemistry has been used to separate and preconcentrate analyte compounds as a step prior to their determination after the formation of sparingly water-soluble complexes [15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

et al. 2009

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A cloud point extraction procedure for the preconcentration of copper, nickel, iron and zinc ions in various samples has been described. Analyte ions in aqueous phase are complexed with 3-((indolin-3-yl)(phenyl)methyl)indoline (IYPMI) and following centrifugation quantitatively extracted to the aqueous phase rich in Triton X-114. The surfactant-rich phase was dissolved in 2.0 mol L−1 HNO3 in methanol prior to metal content determination by flame atomic absorption spectrometry (FAAS). The effects of some parameters including, the concentrations of IYPMI, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were investigated on the recoveries of analyte ions. At optimum conditions, the detection limits of (3 SDb m−1) of 1.6, 2.8, 2.1 and 1.1 ng mL−1 for Cu2+, Fe3+, Ni2+ and Zn2+ along with preconcentration factors of 30 and enrichment factor of 48, 39, 34 and 52 for Cu2+, Ni2+, Fe3+ and Zn2+ respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as biological, soil and blood samples with high efficiency.

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“…The ligand 3-[(4-bromophenyl) (1-H-inden-3-yl)methyl] -1 H-indene (BPIMI) (see Fig. 1) was synthesized according to the literature [36].…”

Section: Reagentsmentioning

confidence: 99%

Preconcentration and Determination of Zinc and Lead Ions by a Combination of Cloud Point Extraction and Flame Atomic Absorption Spectrometry

Ghaedi¹,

Tavallali²,

Shokrollahi

et al. 2009

CLEAN Soil Air Water

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The phase-separation phenomenon of non-ionic surfactants occurring in aqueous solution was used for the extraction of lead(II) and zinc(II). After complexation with 3-[(4-bromophenyl) (1-H-inden-3-yl)methyl]-1 H-indene (BPIMI), the analytes were quantitatively extracted to a phase rich in Triton X-114 after centrifugation. Methanol acidified with 1 mol/L HNO 3 was added to the surfactant rich phase prior to its analysis by flame atomic absorption spectrometry (FAAS). The concentration of bis ((1H-benzo [d] imidazol-2yl)ethyl)sulfane, Triton X-114, pH and amount of surfactant were all optimized. Detection limits (3 SDb/m) of 2.5 and 1.6 ng/mL for Pb 2+ and Zn 2+ along with preconcentration factors of 30 and an enrichment factor of 32 and 48 for Pb 2+ and Zn 2+ ions were obtained, respectively. The proposed cloud point extraction was been successfully applied for the determination of these ions in real samples with complicated matrices such as food and soil samples, with high efficiency.

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Oxidized Bis(indolyl)methane: A Simple and Efficient Chromogenic-Sensing Molecule Based on the Proton Transfer Signaling Mode

Cited by 235 publications

References 43 publications

Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing

Nuclear Magnetic Resonance Spectroscopy Investigations of Naphthalene-Based 1,2,3-Triazole Systems for Anion Sensing

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

Preconcentration and Determination of Zinc and Lead Ions by a Combination of Cloud Point Extraction and Flame Atomic Absorption Spectrometry

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