Plasmonic luminescent core–shell nanocomposites-enhanced chemiluminescence arising from the decomposition of peroxomonosulfite

Chen, Hui; Xue, Wei; Lu, Chao; Li, Haifang; Zheng, Yuxin; Lin, Jin‐Ming

doi:10.1016/j.saa.2013.07.057

Cited by 13 publications

(8 citation statements)

References 47 publications

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“…In this article, a label‐free aptamer AuPdNP catalytic fluorescence method was used to couple the aptamer cleaving reaction with the AuPd nanocatalytic fluorescence reaction. Conditions for both reactions were optimized using a batch method . The cleaving reaction of Pb 2+ –dsDNA–AuNP has been utilized in photometric analysis .…”

Section: Resultsmentioning

confidence: 99%

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

et al. 2014

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The substrate chain of double-stranded DNA (dsDNA) could be specifically cleaved by Pb(2+) to release single-stranded DNA (ssDNA) that adsorbs onto the AuPd nanoalloy (AuPdNP) to form a stable AuPdNP-ssDNA complex, but the dsDNA can not protect AuPdNPs in large AuPdNP aggregates (AuPdNPA) under the action of NaCl. AuPdNP-ssDNA and large AuPdNPA could be separated by centrifugation. On increasing the concentration of Pb(2+) , the amount of released ssDNA increased; AuPdNP-ssDNA increased in the centrifugation solution exhibiting a catalytic effect on the slow reaction of rhodamine 6G (Rh6G) and NaH2 PO2 , which led to fluorescence quenching at 552 nm. The decrease in fluorescence intensity (ΔF) was linear to the concentration of Pb(2+) within the range 0.33-8.00 nmol/L, with a detection limit of 0.21 nmol/L. The proposed method was applied to detect Pb(2+) in water samples, with satisfactory results.

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Section: Resultsmentioning

confidence: 99%

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

et al. 2014

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“…In order to detect radical intermediates, ESR spectroscopy was carried out at room temperature (Figure 5). ESR studies show that TEMP preferentially reacts with 1 O 2 to form 2,2,6,6-tetramethyl-4piperidine-N-oxide (TEMPO), 21 which is a stable nitroxide radical with a characteristic spectrum. 1,20 In Figure 5B, the signal of TEMP favored the generation of 1 O 2 , only in the ZnS QDs-H 2 O 2 system.…”

Section: Free Radicals Studiesmentioning

confidence: 99%

“…As reported in the literature, CL properties of NMs not only will be helpful to study their physical properties but also will have applications in many fields such as luminescence devices, bioanalysis, and multicolor labeling probes. 21 (Tokyo, Japan), and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) was purchased from Tokyo Kasei Kogyo Co. Ltd. (Tokyo, Japan). The solutions were prepared in distilled water and stored at 4 °C.…”

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confidence: 99%

Chemiluminescence Character of ZnS Quantum Dots with Bisulphite-Hydrogen Peroxide System in Acidic Medium

Shah

Zheng

et al. 2016

J. Phys. Chem. C

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In this work, ZnS quantum dots (QDs) capped with mercaptopropanoic acid were applied to the hydrogen peroxide-hydrogen sulfite chemiluminescence (CL) system. The CL intensity of the system was significantly enhanced by ZnS QDs in an acidic medium. The reactive oxygen species like superoxide ion (•O2 –), sulfite (•SO3 –), sulfate (•SO4 –), and hydroxyl (•OH) radicals were generated in the CL reaction. It is of worth to know that the order of addition of reagents sturdily influences CL intensity, indicating different free radical generation in response to the different orders. Interestingly, the addition of water to an optimum concentration ensued a further increase in CL signal, which may be due to hydrolysis reaction at higher concentration of NaHSO3. The enhanced CL was induced by excited ZnS QDs, which could be produced from the combination of hole (QDs (h+)) and electron (QDs (e–)) injected QDs as well as by chemical resonance energy transfer from 1O2 and SO2* to ZnS QDs. Four emitters such as 1O2, (O2)2*, SO2*, and ZnS QDs* were detected in the CL system. Mechanistic investigation indicated that QDs acted as a catalyst, first decomposing H2O2 to generate free radicals and second prompting CL by energy transfer and electron-transfer annihilation effects. Distinct from most QDs CL reactions which are classically attained in basic conditions, this system operates in an acidic medium. This may intrigue an avenue for investigating the CL property of QDs in an acidic medium and promote its application in various fields.

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“…As a common luminescence phenomenon, CL is based on electromagnetic radiation emitted by an exothermic chemical reaction (energy release of > 41 kcal/mol) which usually needs a redox reaction . In this chemical reaction process, an electronically‐excited intermediate is generated, which either luminesces or donates its energy to another molecule responsible for the emission when deactivated to the ground state .…”

Section: Introductionmentioning

confidence: 99%

Carbon dots‐involved chemiluminescence: Recent advances and developments

2018

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In recent years, more and more nanomaterials‐based chemiluminescence (CL) systems have appeared to improve the sensitivity and expand the scope of the analytical applications with the explosive growth and development of nanomaterials and technology. As a fascinating class of luminescent carbon nanomaterials, carbon dots (CDs) are now substantially studied in fabricating CL based assays due to their unique optical and mechanical properties. Herein, we summarize and highlight the current developments of CDs‐involved weak or ultraweak CL systems, as well as the corresponding mechanisms and proper applications in some fields. CDs can take part in the CL reactions as oxidants, emitting species directly involved in redox oxidation, energy acceptors of CL energy transfer, or even catalysts involving other luminophores. In fact, they always have more than one role in many cases, owing to the formation of various excited species with short life in CL systems. Therefore, in this review article, the most recent progress of the different CDs‐assisted CL systems including the mechanisms and applications are presented. Finally, the conclusions and future prospects of this field are also discussed. The significant features of the CDs‐based CL systems may open up new prospects and challenges in a wider range of fields.

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Plasmonic luminescent core–shell nanocomposites-enhanced chemiluminescence arising from the decomposition of peroxomonosulfite

Cited by 13 publications

References 47 publications

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

Chemiluminescence Character of ZnS Quantum Dots with Bisulphite-Hydrogen Peroxide System in Acidic Medium

Carbon dots‐involved chemiluminescence: Recent advances and developments

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Plasmonic luminescent core–shell nanocomposites-enhanced chemiluminescence arising from the decomposition of peroxomonosulfite

Cited by 13 publications

References 47 publications

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb2+ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb2+ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

Chemiluminescence Character of ZnS Quantum Dots with Bisulphite-Hydrogen Peroxide System in Acidic Medium

Carbon dots‐involved chemiluminescence: Recent advances and developments

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A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G

A label‐free DNAzyme‐cleaving fluorescence method for the determination of trace Pb²⁺ based on catalysis of AuPd nanoalloy on the reduction of rhodamine 6G