High quantum yield photoluminescent N-doped carbon dots for switch sensing and imaging

Zhang, Yi; Li, Ximing; Zhang, Hongyu; Ji, Xiuling; Sun, Wei; Yu, Yuexin; Liu, Yinan; Huang, Jiaxing; Sarshar, Zahra; Sain, Mohini

doi:10.1016/j.talanta.2020.121663

Cited by 82 publications

(40 citation statements)

References 48 publications

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“…Next, we determined the optical properties of NS-CDs. NS-CDs display an absorption peak at 332 nm because of the absorption of connected carbonyl/amine group 43 with its maximum excitation wavelength and emission at 345 nm and 443 nm, respectively ( Fig. 3a ).…”

Section: Resultsmentioning

confidence: 99%

Integration detection of mercury(ii) and GSH with a fluorescent “on-off-on” switch sensor based on nitrogen, sulfur co-doped carbon dots

Sun

Jing

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Integration detection of mercury(ii) and GSH with a fluorescent “on-off-on” switch sensor based on nitrogen, sulfur co-doped carbon dots

Sun

Jing

et al. 2022

RSC Adv.

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“…, N, S, and P) doping and surface modification are among the most effective means to improve the fluorescence properties of CDs, and thus are commonly applied for all kinds of bioimaging. 233–235…”

Section: Composites For Biomedical Applicationsmentioning

confidence: 99%

“…For instance, in Yan and co-workers’ study, glyoxylic acid-modified CDs (GA-CDs) were used as a FRET ratiometric fluorescent probe for the detection of Cu 2+ in aqueous solution. 388 Similarly, Chen et al also applied cyclam-functionalized CDs as a FRET nanoprobe for the detection of Cu 2+ and S. 2–389 In addition to the above examples, the detection of other important metal ions such as Ag + , Cu 2+ , Cr 6+ , and Pb 2+ has also been successfully realized with CD composite-based sensing platforms. 390–401…”

Section: Composites For Biomedical Applicationsmentioning

confidence: 99%

Carbon dot composites for bioapplications: a review

Chen

Jia

et al. 2022

J. Mater. Chem. B

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“…Reversibility is the essential parameter of the probe for the real-time application and economic aspect [42]. A fervent complexing agent EDTA has been added to the NCD-Fe 3+ system to validate NCD sensors' reversibility towards Fe 3+ .…”

Section: Reversibility Studymentioning

confidence: 99%

N-Doped Carbon Dots Derived from Melamine and Triethanolamine for Selective Sensing of Fe3+ Ions

Munusamy

Sawminathan

Arumugham

et al. 2021

Journal of Nanomaterials

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This work reports nitrogen-doped carbon dots (NCDs) as a selective sensing probe to detect Fe3+ in water samples. NCD probes were synthesized via solvothermal method using nitrogen-rich melamine and triethanolamine as precursors. Properties of the resulting NCDs were studied using different characterization techniques, through which N-doping was confirmed. The quantum yield of obtained NCDs was measured to be 21%. When excited at 370 nm, the excellent blue emission property makes this probe adoptable for selectively sensing Fe3+ in practical water samples. The limit of detection (LOD) was identified as 216 nM with a good linear range between the concentrations of 0.2-2 μM. The obtained LOD is far less than the World Health Organization (WHO) permissible limits of Fe3+ in water. Interference studies reveal that the presence of other competing ions did not alter the sensing of Fe3+, even at the presence of 10 equivalents which indicates the high selectivity of NCDs towards Fe3+. The reversibility studies showed that adding a cheap and readily available EDTA ligand to the NCD results in fluorescence regeneration, leading to exceptional reusability for the detection of Fe3+. So, the synthesized NCDs can be used as a suitable probe for the selective determination of Fe3+ in real water samples.

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High quantum yield photoluminescent N-doped carbon dots for switch sensing and imaging

Cited by 82 publications

References 48 publications

Integration detection of mercury(ii) and GSH with a fluorescent “on-off-on” switch sensor based on nitrogen, sulfur co-doped carbon dots

Integration detection of mercury(ii) and GSH with a fluorescent “on-off-on” switch sensor based on nitrogen, sulfur co-doped carbon dots

Carbon dot composites for bioapplications: a review

N-Doped Carbon Dots Derived from Melamine and Triethanolamine for Selective Sensing of Fe3+ Ions

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