Basophilic green fluorescent carbon nanoparticles derived from benzoxazine for the detection of Cr(<scp>vi</scp>) in a strongly alkaline environment

Fang, Bin; Wang, Ping; Zhu, Yujia; Wang, Cao-Yu; Zhang, Geng; Zheng, Xuejun; Ding, Cong; Gu, Jiangjiang; Cao, Fuyang

doi:10.1039/c7ra10814a

Cited by 17 publications

(13 citation statements)

References 53 publications

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“…As the amount of SA‐HRP increased, the CL signal increased continuously, reaching a maximum at 20 ng (Figure ). However, the signal intensity and signal‐to‐noise ratio decreased with additional SA–HRP, likely due to the inner filter effect . When considered overall, 20 ng of SA‐HRP was selected for subsequent experiments.…”

Section: Resultsmentioning

confidence: 99%

A conformational switch‐based aptasensor for the chemiluminescence detection of microRNA

Cai

AL‐maskri

et al. 2019

Luminescence

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A simple microRNA (miRNA) aptasensor has been developed combining the conformational switch of a streptavidin aptamer and isothermal strand displacement amplification. In the presence of its target miRNA, the allosteric molecular beacon (aMB) probe immobilized on the plate can be 'switched on' and release the streptavidin aptamer. At the same time, Klenow fragment (3′→5′ exo-) is utilized to initiate DNA-strand displacement, which starts the target recycling process. Based on the aptamer' high binding affinity and subsequent catalytic chemiluminescence (CL) detection, this CL strategy is highly specific in distinguishing mature miRNAs in same family. It exhibits a dynamic range of four orders of magnitude with a detection limit of 50 fM, and shows great potential for miRNA-related clinical practices and biochemical research.

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Section: Resultsmentioning

confidence: 99%

A conformational switch‐based aptasensor for the chemiluminescence detection of microRNA

Cai

AL‐maskri

et al. 2019

Luminescence

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“…To confirm the crystallinity of N-CNPs, XRD was measured, and the result was shown in Figure 2 c. It was clear that a broad diffraction peak (2θ) was observed at 23.3°, which revealed that N-CNPs had an amorphous crystal phase [ 51 ]. FT-IR was used to identify the functional groups and chemical structure of N-CNPs.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen-Doped Carbon Nanoparticles Derived from Silkworm Excrement as On–Off–On Fluorescent Sensors to Detect Fe(III) and Biothiols

Liu

Wang

et al. 2018

Nanomaterials

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On–off–on fluorescent sensors based on emerging carbon nanoparticles (CNPs) or carbon dots (CDs) have attracted extensive attention for their convenience and efficiency. In this study, dumped silkworm excrement was used as a novel precursor to prepare fluorescent nitrogen-doped CNPs (N-CNPs) through hydrothermal treatment. The obtained N-CNPs showed good photoluminescent properties and excellent water dispersibility. Thus, they were applied as fluorescence “on–off–on” probes for the detection of Fe(III) and biothiols. The “on–off” process was achieved by adding Fe(III) into N-CNP solution, which resulted in the selective fluorescence quenching, with the detection limit of 0.20 μM in the linear range of 1–500 μM. Following this, the introduction of biothiols could recover the fluorescence efficiently, in order to realize the “off–on” process. By using glutathione (GSH) as the representative, the linear range was in the range of 1–1000 μM, and the limit of detection was 0.13 μM. Moreover, this useful strategy was successfully applied for the determination of amounts of GSH in fetal calf serum samples.

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Section: As Carbon Dotsmentioning

confidence: 99%

“…Carbon dots (CDs), also known as carbon quantum dots or carbon nanodots, are emerging as a promising carbon-based photoluminescent nanomaterial [41,42,119]. CDs have been attracting attention since their discovery in 2004 [41,119]. Properties include excellent photoluminescence [42,119], low toxicity [42,119], high aqueous solubility [41,42], high photostability and resistance to photobleaching [41,42], excellent optical properties [41], biocompatibility [42], and low-cost synthesis [42,119].…”

Section: As Carbon Dotsmentioning

confidence: 99%

“…Such properties allow for CD applications in bio-imaging, photovoltaic devices, photocatalysis, biosensing, drug delivery, and photodynamic therapy [41,42]. For instance, Fang et al [119] used CDs as fluorescent probes to detect heavy or transition metal ions for the prevention of pollution and protection of human health. The authors used benzoxazine to synthesize basophilic green fluorescent carbon nanoparticles by a one-pot hydrothermal treatment in NaOH aqueous solution, depicted in Figure 50 [119].…”

Section: As Carbon Dotsmentioning

confidence: 99%

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Advanced Carbon Materials Derived from Polybenzoxazines: A Review

et al. 2021

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This comprehensive review article summarizes the key properties and applications of advanced carbonaceous materials obtained from polybenzoxazines. Identification of several thermal degradation products that arose during carbonization allowed for several different mechanisms (both competitive ones and independent ones) of carbonization, while also confirming the thermal stability of benzoxazines. Electrochemical properties of polybenzoxazine-derived carbon materials were also examined, noting particularly high pseudocapacitance and charge stability that would make benzoxazines suitable as electrodes. Carbon materials from benzoxazines are also highly versatile and can be synthesized and prepared in a number of ways including as films, foams, nanofibers, nanospheres, and aerogels/xerogels, some of which provide unique properties. One example of the special properties is that materials can be porous not only as aerogels and xerogels, but as nanofibers with highly tailorable porosity, controlled through various preparation techniques including, but not limited to, the use of surfactants and silica nanoparticles. In addition to the high and tailorable porosity, benzoxazines have several properties that make them good for numerous applications of the carbonized forms, including electrodes, batteries, gas adsorbents, catalysts, shielding materials, and intumescent coatings, among others. Extreme thermal and electrical stability also allows benzoxazines to be used in harsher conditions, such as in aerospace applications.

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Basophilic green fluorescent carbon nanoparticles derived from benzoxazine for the detection of Cr(vi) in a strongly alkaline environment

Abstract: Basophilic green fluorescent carbon nanoparticles (G-CNPs) were prepared from benzoxazine for the selective detection of Cr(vi) in strongly alkaline environments.

Cited by 17 publications

References 53 publications

A conformational switch‐based aptasensor for the chemiluminescence detection of microRNA

A conformational switch‐based aptasensor for the chemiluminescence detection of microRNA

Nitrogen-Doped Carbon Nanoparticles Derived from Silkworm Excrement as On–Off–On Fluorescent Sensors to Detect Fe(III) and Biothiols

Advanced Carbon Materials Derived from Polybenzoxazines: A Review

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