Thiourea dioxide as a unique eco-friendly coreactant for luminol chemiluminescence in the sensitive detection of luminol, thiourea dioxide and cobalt ions

Gao, Wenyue; Qi, Wenjing; Lai, Jianping; Qi, Liming; Majeed, Saadat; Xu, Guobao

doi:10.1039/c4cc08904a

Cited by 28 publications

(19 citation statements)

References 39 publications

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“…From these results, we concluded that cyanamide is indeed the primary product of the reaction under our experimental conditions, but cyanamide appears to be transformed into ammonium ions and carbon dioxide on a longer timescale in the presence of excess TDO. As thiourea dioxide may also serve as an oxidant, [32] this possibility may explain the difference between our previous and recent reports, but this phenomenon certainly requires further detailed investigations. Furthermore, the CE and HPLC experiments presented above also confirm that both chlorite ions and hypochlorous acid can only be short-lived intermediates of the reaction.…”

Section: Identification Of Products and Intermediatescontrasting

confidence: 48%

Mechanism Involving Hydrogen Sulfite Ions, Chlorite Ions, and Hypochlorous Acid as Key Intermediates of the Autocatalytic Chlorine Dioxide–Thiourea Dioxide Reaction

Horváth

Duan

et al. 2015

Eur J Inorg Chem

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The kinetics of the chlorine dioxide–thiourea dioxide reaction was investigated by monitoring absorbance–time profiles at λ = 360 nm. Under acidic conditions, the primary carbon‐containing product is cyanamide, not urea as considered previously for many oxidation reactions of thiourea dioxide. Increase of the rate of the reaction by an increase of pH can be readily explained by the slow pH‐dependent formation of a more reactive form of thiourea dioxide (TDO) that is produced steadily and unavoidably as the stock TDO solution ages. We have also found that the absorbance–time profiles of the chlorine dioxide–TDO reaction are sigmoidal with excess TDO. The addition of methionine as a hypochlorous acid scavenging agent inhibits the reaction significantly, whereas the addition of chlorite ions and trace amounts of hydrogen sulfite ions accelerates the decay of chlorine dioxide. On the basis of these experiments, a sixteen‐step kinetic model involving hypochlorous acid, chlorite ions, and hydrogen sulfite ions as key intermediates that provide an autocatalytic cycle is proposed to account for the overall kinetic behavior observed, including the slow rearrangement of TDO.

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Section: Identification Of Products and Intermediatescontrasting

confidence: 48%

Mechanism Involving Hydrogen Sulfite Ions, Chlorite Ions, and Hypochlorous Acid as Key Intermediates of the Autocatalytic Chlorine Dioxide–Thiourea Dioxide Reaction

Horváth

Duan

et al. 2015

Eur J Inorg Chem

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“…The limit of detection (LOD) is 1.36 nM at a signal-to-noise ratio of 3, which is comparable with that of the most sensitive method reported before. 30 …”

Section: Resultsmentioning

confidence: 99%

A single-electrode electrochemical system for multiplex electrochemiluminescence analysis based on a resistance induced potential difference

Gao

Muzyka

et al. 2018

Chem. Sci.

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“…It can be defined concisely as chemical reactions that emit light [16]. CL has been widely used as detection method in many fields because of its many advantages: large linear response, fast light emission, high stability of reaction reagents, low consumption of expensive reagents, cheap devices, and no problems about light scattering, source instability, or high background because of no excitation light source needed [17][18][19][20][21][22][23][24][25][26][27]. However, the CL emission of molecular systems is usually weak due to low quantum efficiency.…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescence and electrochemiluminescence applications of metal nanoclusters

Han

Zhang

et al. 2016

Sci. China Chem.

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Due to strong photoluminescence, extraordinary photostability, excellent biocompatibility, and good water-solubility, metal nanoclusters have attracted enormous attention since discovered. They are found to be novel fluorescence labels for biological applications and environmental monitoring. Recently the chemiluminescence (CL) or electrochemiluminescence (ECL) of metal nanoclusters has received increasing attention. This review covers recent vibrant developments in this field of the past 5 years, and highlights different functions of metal nanoclusters in various CL and ECL systems, such as luminophores, catalysts, and quenchers. Latest synthetic methods of metal nanoclusters used in CL or ECL are also summarized. Furthermore, we discuss some perspectives and critical challenges of this field in the near future. nanoclusters, chemiluminescence, electrochemiluminescence, fluorescence, sensors Citation:Han S, Zhang Z, Li S, Qi L, Xu G. Chemiluminescence and electrochemiluminescence applications of metal nanoclusters. Sci China Chem,

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Thiourea dioxide as a unique eco-friendly coreactant for luminol chemiluminescence in the sensitive detection of luminol, thiourea dioxide and cobalt ions

Cited by 28 publications

References 39 publications

Mechanism Involving Hydrogen Sulfite Ions, Chlorite Ions, and Hypochlorous Acid as Key Intermediates of the Autocatalytic Chlorine Dioxide–Thiourea Dioxide Reaction

Mechanism Involving Hydrogen Sulfite Ions, Chlorite Ions, and Hypochlorous Acid as Key Intermediates of the Autocatalytic Chlorine Dioxide–Thiourea Dioxide Reaction

A single-electrode electrochemical system for multiplex electrochemiluminescence analysis based on a resistance induced potential difference

Chemiluminescence and electrochemiluminescence applications of metal nanoclusters

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