A novel electrochemiluminescence sensor for the detection of nitroaniline based on the nitrogen-doped graphene quantum dots

Chen, Shufan; Chen, Xueqian; Xia, Tingting; Ma, Qiang

doi:10.1016/j.bios.2016.06.010

Cited by 74 publications

(21 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[32] The freeze-drying technique was applied to obtain the CDs powder, followed by transfer to DMF. [32] The freeze-drying technique was applied to obtain the CDs powder, followed by transfer to DMF.…”

Section: Synthesis Of Ta and Cdsmentioning

confidence: 99%

See 1 more Smart Citation

Flexible and Robust Electro‐Optically Responsive Films Based on Novel Silica/Oligoaniline/Carbon Dots Composite

Zhou

Berda

et al. 2019

ChemElectroChem

Self Cite

View full text Add to dashboard Cite

We report a new electro-optical composite film based on silica, oligoaniline, and carbon dots prepared by a hydrolytic crosslinking reaction under electrokinetic potentials. The electroactive oligoaniline and fluorescent carbon dots are covalently linked through hydrolysis of siloxane, resulting in multifunctional composite films. The resultant crosslinked architecture endows the films with high flexibility and robust durability. These films display good electrochromic behavior with an obvious color contrast, quick switching rate, and acceptable cycling stability. Moreover, these films reveal an interesting electrofluorochromic performance in continuous potential ranges, attributed to the interaction between oligoaniline and carbon dots, and the change in structure that occurs with changing redox potentials. Further, an enhanced photocurrent response is observed in these materials, as a result of the organic-inorganic interfaces.

show abstract

Section: Synthesis Of Ta and Cdsmentioning

confidence: 99%

“…Nitrogen-doped carbon dots were prepared by carbonization of citric acid with ammonia according to the previous reports. [32] The freeze-drying technique was applied to obtain the CDs powder, followed by transfer to DMF. Both CDs aqueous dispersion and CDs DMF dispersion were stored at 4°C for further characterization and use.…”

Section: Synthesis Of Ta and Cdsmentioning

confidence: 99%

Flexible and Robust Electro‐Optically Responsive Films Based on Novel Silica/Oligoaniline/Carbon Dots Composite

Zhou

Berda

et al. 2019

ChemElectroChem

Self Cite

View full text Add to dashboard Cite

show abstract

“…A simple ECL signal-on strategy exploring the role of N-GQDs and chitosan was designed for detecting nitroaniline (NA) in real water samples [207]. Owing to the hydrophilicity, high water permeability and strong adhesive characteristics of chitosan, it successfully loaded the N-GQDs to the surface of the working electrode, while N-GQDs were used for the rapid diazotization reaction of anilines and as highly reactive agent.…”

Section: Electrochemiluminescence-based Gqd-sensorsmentioning

confidence: 99%

Applications of Graphene Quantum Dots in Biomedical Sensors

Mansuriya

Altıntaş

2020

Sensors

164

View full text Add to dashboard Cite

Due to the proliferative cancer rates, cardiovascular diseases, neurodegenerative disorders, autoimmune diseases and a plethora of infections across the globe, it is essential to introduce strategies that can rapidly and specifically detect the ultralow concentrations of relevant biomarkers, pathogens, toxins and pharmaceuticals in biological matrices. Considering these pathophysiologies, various research works have become necessary to fabricate biosensors for their early diagnosis and treatment, using nanomaterials like quantum dots (QDs). These nanomaterials effectively ameliorate the sensor performance with respect to their reproducibility, selectivity as well as sensitivity. In particular, graphene quantum dots (GQDs), which are ideally graphene fragments of nanometer size, constitute discrete features such as acting as attractive fluorophores and excellent electro-catalysts owing to their photo-stability, water-solubility, biocompatibility, non-toxicity and lucrativeness that make them favorable candidates for a wide range of novel biomedical applications. Herein, we reviewed about 300 biomedical studies reported over the last five years which entail the state of art as well as some pioneering ideas with respect to the prominent role of GQDs, especially in the development of optical, electrochemical and photoelectrochemical biosensors. Additionally, we outline the ideal properties of GQDs, their eclectic methods of synthesis, and the general principle behind several biosensing techniques.

show abstract

“…29 Doping with heteroatoms can offer more active sites and effectively tune their optical property, which would expand GQDs-based sensing applications. 30,31 In order to obtain an intense ECL signal and ideal analytical performance, many materials, such as metal nanoparticles or carbon nanotubes (CNTs), had been used for ECL signal amplifying. [32][33][34] The ECL intensity of CNTs/ZnO nanocomposites was almost an order of magnitude greater than that of pure ZnO nanoflowers, owing to the CNTs decreased the barriers to ZnO reduction during the ECL process.…”

Section: Introductionmentioning

confidence: 99%

Electrochemiluminescence Quenching Sensor of a Carboxylic Carbon Nanotubes Modified Glassy Carbon Electrode for Detecting Crystal Violet Based on Nitrogen-doped Graphene Quantum Dots@Peroxydisulfate System

et al. 2019

View full text Add to dashboard Cite

In this work, the electrochemiluminscence system of nitrogen-doped graphene quantum dots (N-GQDs) and K2S2O8 was built for the determination of crystal violet (CV). Meanwhile, a carboxylic carbon nanotubes modified glassy carbon electrode (CCNTs/GCE) was used as an ECL sensor. Thanks to the excellent electron transfer ability and large surface area of CCNTs, the ECL signal of N-GQDs@S2O8 2was remarkablely amplified. With the presence of a low concentration of CV, a distinct decrease of the ECL signal was observed due to a quenching effect of CV on the ECL emission. Moreover, the quenched ECL intensity responded linearly to the logarithm of CV concentration within the range of 0.05-5 μmol/L, with a LOD of 45 nmol/L (S/N = 3). The proposed ECL system exhibited high sensitivity and specificity to CV, which was successfully applied in the practical detection of CV in real water samples from a local fishpond farm.

show abstract

A novel electrochemiluminescence sensor for the detection of nitroaniline based on the nitrogen-doped graphene quantum dots

Cited by 74 publications

References 30 publications

Flexible and Robust Electro‐Optically Responsive Films Based on Novel Silica/Oligoaniline/Carbon Dots Composite

Flexible and Robust Electro‐Optically Responsive Films Based on Novel Silica/Oligoaniline/Carbon Dots Composite

Applications of Graphene Quantum Dots in Biomedical Sensors

Electrochemiluminescence Quenching Sensor of a Carboxylic Carbon Nanotubes Modified Glassy Carbon Electrode for Detecting Crystal Violet Based on Nitrogen-doped Graphene Quantum Dots@Peroxydisulfate System

Contact Info

Product

Resources

About