Highly luminescent nitrogen and sulfur co-doped carbon dots for Sn2+ and S2− sensing and dual-mode anti-counterfeiting

Liao, Linhong; Lin, Xinhua; Wang, Kai; Hu, Zhiyuan; Wu, Fengshou

doi:10.1007/s00604-023-05922-9

Cited by 15 publications

(6 citation statements)

References 41 publications

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“…3e. 40 In addition, the high-resolution S 2p spectra exhibited three peaks at 163 and 164.4, 167.3 eV, ascribed to C–S–C and S–O bonds, as depicted in Fig. 3f.…”

Section: Resultsmentioning

confidence: 90%

“…3c) show four characteristic peaks at 284.78, 285.06, 288.48, and 288.39 eV, attributed to C–C/CC, C–N/C–O/C–S, OC–N/OC–OH, and CN/CO. 40 Furthermore, the N 1s spectra (Fig. 3d) were deconvoluted into three characteristic peaks at 398.22 eV, 399.24 eV, and 401 eV, which can correspond to pyridine N, pyrrolic N, and graphitic N. 41 The O 1s spectra show the peak at 531.67 eV and 533.16 eV, revealing the presence of CO and C–O bonds, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…3f. 40 Based on these findings from FTIR and XPS, we considered that the R-CDs have different hydrophilic groups such as amino, hydroxyl, and anhydride, etc., which facilitate the water solubilities of the R-CDs. Subsequently, taking into account the effects of these functional groups, we examined the zeta potential of the R-CDs in ultrapure water, which was À30 mV as expected (Fig.…”

Section: Characterization Of R-cdsmentioning

confidence: 99%

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Gram-scale synthesis of aggregation-caused quenching-resistant red-emissive carbon dots for potential applications

Kumar,

Negi,

Sahu

2024

New J. Chem.

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“…3e. 40 In addition, the high-resolution S 2p spectra exhibited three peaks at 163 and 164.4, 167.3 eV, ascribed to C–S–C and S–O bonds, as depicted in Fig. 3f.…”

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Characterization Of R-cdsmentioning

confidence: 99%

See 2 more Smart Citations

Gram-scale synthesis of aggregation-caused quenching-resistant red-emissive carbon dots for potential applications

Kumar,

Negi,

Sahu

2024

New J. Chem.

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show abstract

“…44 The N 1s spectra (Figure 1i) exhibited two peaks at 399 and 400.2 eV, attributable to C− N−C and C−NH 2 , respectively. 45 The zeta potential of N-CQDs was calculated to be −18.2 mV (Figure S2), which was probably due to the presence of negatively charged functional groups (hydroxyl, carboxyl) on the surface. 46 Thus, the prepared N-CQDs were functionalized with groups containing carbon, oxygen, and nitrogen elements, thereby enhancing their fluorescence intensity and water solubility to some extent.…”

Section: Characterization Of N-cqdsmentioning

confidence: 99%

Nitrogen-Doped Carbon Quantum Dots with Photoactivation Properties for Ultraviolet Ray Detection

Liao,

Qi,

Gao

et al. 2024

ACS Appl. Mater. Interfaces

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Photoactivation is a phenomenon that could enhance the photoluminescence (PL) and photostability upon UV/vis light exposure, which is usually observed in CdSe/ZnS quantum dots (QDs). However, the photoactivation phenomenon has been scarcely reported in fluorescent carbon quantum dots (CQDs). Herein, the nitrogen-doped carbon quantum dots (N-CQDs) were prepared through a facile solvothermal approach with naphthalenetracarboxylic dianhydride and serine as precursors. Upon simple UV light irradiation for 10 min, the fluorescence quantum yield (QY) of N-CQDs could increase up to 10-fold. Based on this phenomenon, the N-CQDs were explored as an ultraviolet (UV) light sensor to assess the intensity of ultraviolet radiation in sunlight and indirectly evaluate the UVblocking efficiency of various sunscreen products. Thus, this contribution not only provided an insight into developing a low-cost UV detector but also opened a door for the development of carbon quantum dots with converse-photobleaching properties.

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Recent Advances in Highly Luminescent Carbon Dots

Liu,

Huang,

Wang

et al. 2024

Adv Funct Materials

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Highly luminescent carbon dots (CDs) have garnered significant attention and are increasingly utilized in various fields. Despite its importance, there has been a lack of comprehensive reviews focusing specifically on highly luminescent CDs. It is aimed here to fill that gap by exploring CDs with high photoluminescence quantum yield (PLQY), starting with an examination of the luminescent mechanisms underlying highly luminescent CDs. The selection of synthetic raw materials and preparation methods along with the research progress are reviewed and the information on highly luminescent CDs across various luminescent bands is then statistically summarized in several tables. Subsequently, the structural features, synthesis methods, and purification strategies that lead to high PLQY in CDs are summarized based on analyzing collected examples of highly luminescent CDs. Furthermore, the highly luminescent‐based multifunctional applications of CDs in bioimaging, light‐emitting diodes, luminescent solar concentrators, and lasers are introduced. Finally, the current research landscape is evaluated, existing challenges are identified, and feasible directions are proposed for future development.

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Highly luminescent nitrogen and sulfur co-doped carbon dots for Sn2+ and S2− sensing and dual-mode anti-counterfeiting

Cited by 15 publications

References 41 publications

Gram-scale synthesis of aggregation-caused quenching-resistant red-emissive carbon dots for potential applications

Gram-scale synthesis of aggregation-caused quenching-resistant red-emissive carbon dots for potential applications

Nitrogen-Doped Carbon Quantum Dots with Photoactivation Properties for Ultraviolet Ray Detection

Recent Advances in Highly Luminescent Carbon Dots

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