Cathodic Electrochemiluminescence from Rhodamine B in Aqueous Media Using Peroxydisulfate as Co-reactant

Okada, Mizuho; Nishio, Ikuma; Takahashi, Fumiki; Tatsumi, Hirosuke; Jin, Jiye

doi:10.1246/cl.210289

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…The surfactant was added to the electrolyte to facilitate the contact between the aqueous solution and the carbon electrode as well as to enhance the ECL. 41 Glow sticks (Glow; Irving, TX, USA) were purchased at a local store and were carefully disassembled to extract the dye, contained in the inner glass ampule. 42,43 In order to rationally approach the utilization of the glow sticks, the chemical composition and optical properties of the dye contained within were investigated by a combination of thinlayer chromatography, HPLC-MS (Agilent 6545 LC/Q-TOF systems, Agilent Technologies, Santa Clara, CA), and fluorescence spectroscopy (Quantamaster, Photon Technology International, Inc.).…”

Section: Methodsmentioning

confidence: 99%

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From glow-sticks to sensors: single-electrode electrochemical detection for paper-based devices

et al. 2022

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Section: Methodsmentioning

confidence: 99%

“…The surfactant was added to the electrolyte to facilitate the contact between the aqueous solution and the carbon electrode as well as to enhance the ECL. 41…”

Section: Methodsmentioning

confidence: 99%

From glow-sticks to sensors: single-electrode electrochemical detection for paper-based devices

et al. 2022

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“…In their study the two reduction processes were believed to be in some form of equilibrium. However, Okada et al[51], in their voltammetric study of Rhodamine B, showed the same voltammetric reduction process as irreversible. In the present study, the subsequent quasi-reversible oxidation of species (IV) on the return positive-going scan then occurred at O1, through an overall one-electron, one-proton oxidation back to (III).…”

mentioning

confidence: 96%

Voltammetric Behaviour of Rhodamine B at a Screen-Printed Carbon Electrode and Its Trace Determination in Environmental Water Samples

Honeychurch

2022

Sensors

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The voltammetric behaviour of Rhodamine B was studied at a screen-printed carbon electrode (SPCE), by cyclic and differential pulse voltammetry. Cyclic voltammograms exhibited two reduction peaks (designated R1 and R2) generated from the reduction of the parent compound through, first, one electron reduction (R1) to give a radical species, and then a further one-electron, one-proton reduction to give a neutral molecule (R2). On the reverse positive-going scan, two oxidation peaks were observed. The first, O1, resulted from the oxidation of the species generated at R2, and the second, O2, through the one-electron oxidation of the amine group. The nature of the redox reactions was further investigated by observing the effect of scan rate and pH on the voltammetric behaviour. The developed SPCE method was evaluated by carrying out Rhodamine B determinations on a spiked and unspiked environmental water sample. A mean recovery of 94.3% with an associated coefficient of variation of 2.9% was obtained. The performance characteristics indicated that reliable data may be obtained for Rhodamine B measurements in environmental water samples using this approach.

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Stereoselective amino acid synthesis by synergistic photoredox-pyridoxal radical biocatalysis

Cheng

Khanh

et al. 2023

Science

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Developing synthetically useful enzymatic reactions that are not known in biochemistry and organic chemistry is an important challenge in biocatalysis. Through the synergistic merger of photoredox catalysis and pyridoxal 5′-phosphate (PLP) biocatalysis, we developed a pyridoxal radical biocatalysis approach to prepare valuable noncanonical amino acids, including those bearing a stereochemical dyad or triad, without the need for protecting groups. Using engineered PLP enzymes, either enantiomeric product could be produced in a biocatalyst-controlled fashion. Synergistic photoredox - pyridoxal radical biocatalysis represents a powerful platform with which to discover previously unknown catalytic reactions and to tame radical intermediates for asymmetric catalysis.

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Cathodic Electrochemiluminescence from Rhodamine B in Aqueous Media Using Peroxydisulfate as Co-reactant

Cited by 3 publications

References 24 publications

From glow-sticks to sensors: single-electrode electrochemical detection for paper-based devices

From glow-sticks to sensors: single-electrode electrochemical detection for paper-based devices

Voltammetric Behaviour of Rhodamine B at a Screen-Printed Carbon Electrode and Its Trace Determination in Environmental Water Samples

Stereoselective amino acid synthesis by synergistic photoredox-pyridoxal radical biocatalysis

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