Copper(II) complexes as catalyst for the aerobic oxidation of o-phenylenediamine to 2,3-diaminophenazine

Khattar, Raghvi; Yadav, Anjana; Mathur, Pavan

doi:10.1016/j.saa.2015.01.115

Cited by 23 publications

(8 citation statements)

References 34 publications

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“…As examined, the C–N coupling between reactive 2 and BP was employed to generate intermediate 3 (at m / z 373) . Subsequently, 3 would be oxidized into 4 by H 2 O 2 , which was followed by the cyclization to obtain the final product of DBP (at m / z 371) . This is in accordance with the reaction monitoring in photocatalysis reactions .…”

Section: Resultsmentioning

confidence: 57%

“…29 Subsequently, 3 would be oxidized into 4 by H 2 O 2 , which was followed by the cyclization to obtain the final product of DBP (at m/z 371). 32 This is in accordance with the reaction monitoring in photocatalysis reactions. 27 All the corresponding ion structures were confirmed by CID experiments (Figure S7).…”

Section: Online and In Situ Examinations On Bp Conversions In Dropletsmentioning

confidence: 72%

“…Then, upon the cyclization of 5 via removing an amino group, the dimer intermediate 6 was generated to give the signal at m / z 435. Finally, oxidized by H 2 O 2 generated by light irradiation at the interface, , the final oxidation product of TBP at m / z 433 was obtained, while in the water system under the water–air interface, much simpler reactions were exhibited ( Water , Scheme ). As examined, the C–N coupling between reactive 2 and BP was employed to generate intermediate 3 (at m / z 373) .…”

Section: Resultsmentioning

confidence: 99%

“…At the water−air interface (Interface, Scheme 1), in the presence of • OH 9,11,28 433 was obtained, 32 while in the water system under the water−air interface, much simpler reactions were exhibited (Water, Scheme 1). As examined, the C−N coupling between reactive 2 and BP was employed to generate intermediate 3 (at m/z 373).…”

Section: Online and In Situ Examinations On Bp Conversions In Dropletsmentioning

confidence: 99%

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Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

Zhang

Sun

Yin

et al. 2022

ACS Sustainable Chem. Eng.

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Pollutant conversions at the air−water interface of a single droplet are crucial for obtaining accurate predictions on environment quality. Herein, droplet ESI MS was carried out to understand the photochemical conversions of pollutants across the water−air interface of a single droplet. A single droplet was kept on a Y-shaped Cu electrode, realizing the in situ electrospray ionization for the examinations. By applying high voltage, in situ MS detection of a droplet was carried out layer-by-layer, from the water−air interface to the inner droplet. By droplet ESI MS, secondary pollutants in a single droplet were observed under visible-light irradiation, while no obvious conversion was recorded in the bulk solution, indicating the complicated and active conversions in droplets. More significantly, different pollutant conversions at the water−air interface and inner droplet were recorded by the dynamic monitoring via droplet ESI MS detections layer-by-layer. By examining the observed dimer and radical intermediates, photochemical mechanisms across the water−air interface were proposed. By providing an effective pathway for single-droplet examinations, this work enlarges applications of ambient MS into environment studies.

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Section: Resultsmentioning

confidence: 57%

Section: Online and In Situ Examinations On Bp Conversions In Dropletsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Online and In Situ Examinations On Bp Conversions In Dropletsmentioning

confidence: 99%

See 2 more Smart Citations

Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

Zhang

Sun

Yin

et al. 2022

ACS Sustainable Chem. Eng.

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“…In recent years, the luminescent properties of 2,3-diaminophenazine (OPDox) have received extensive attention in the fields of analytical chemistry, organic synthesis, and materials chemistry. [29][30][31][32] Notably, the Ce(IV) ions have been generally studied as a single-electron oxidant in various reactions. 33,34 As an efficient single-electron oxidizer, Ce(IV) can efficiently promote the oxidative cyclization of OPD to generate OPDox.…”

Section: Introductionmentioning

confidence: 99%

o-Phenylenediamine as a reaction-based probe for the fluorescent detection of Ce(IV) ions

Lai

Wang

et al. 2020

Journal of Chemical Research

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o-Phenylenediamine as a new fluorescent probe is designed for detecting Ce(IV) ions. The mechanism of detection relies on the oxidative activity of Ce(IV) ions, which can promote the oxidative cyclization of o-Phenylenediamine leading to the formation of fluorescent 2,3-diaminophenazine and giving a more than 150-fold fluorescence enhancement. Furthermore, the o-Phenylenediamine fluorescent probe was effectively used for the detection of Ce(IV) ions in river water, tap water, rainwater, and lateritic soil from Ganzhou.

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Self‐Assembling Catalytic Peptide Nanomaterials Capable of Highly Efficient Peroxidase Activity

Zozulia

Marshall

Kim

et al. 2021

Chemistry A European J

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The self‐assembly of short peptides gives rise to versatile nanomaterials capable of promoting efficient catalysis. We have shown that short, seven‐residue peptides bind hemin to produce functional catalytic materials which display highly efficient peroxidation activity, reaching a catalytic efficiency of 3×105 m−1 s−1. Self‐assembly is essential for catalysis as non‐assembling controls show no activity. We have also observed peroxidase activity even in the absence of hemin, suggesting the potential to alter redox properties of substrates upon association with the assemblies. These results demonstrate the practical utility of self‐assembled peptides in various catalytic applications and further support the evolutionary link between amyloids and modern‐day enzymes.

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Copper(II) complexes as catalyst for the aerobic oxidation of o-phenylenediamine to 2,3-diaminophenazine

Cited by 23 publications

References 34 publications

Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

o-Phenylenediamine as a reaction-based probe for the fluorescent detection of Ce(IV) ions

Self‐Assembling Catalytic Peptide Nanomaterials Capable of Highly Efficient Peroxidase Activity

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