Surface modification of nitrogen-doped carbon quantum dots for enhanced functionalities DOI
Pham Van Duong, Le Anh Thi,

M. D. Hieu

и другие.

Communications in Physics, Год журнала: 2024, Номер 34(4), С. 413 - 413

Опубликована: Дек. 19, 2024

A facile and controllable one-step atmospheric pressure microplasma method was employed to synthesize nitrogen-doped carbon quantum dots (N-CQDs) with tunable optical properties. The N-CQDs were characterized using Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, UV‒Vis absorption photoluminescence spectroscopy. HRTEM revealed uniformly distributed spherical nanoparticles a graphite-like structure. FTIR confirmed effective nitrogen doping, enhancing chemical stability. spectroscopy redshifted peaks, indicating improved electronic interactions reduced bandgap (4.05 eV) compared those of undoped CQDs (4.18 eV). PL analysis excitation-dependent emission significantly higher yield (PLQY) 33.09%. These results suggest that hold promise for applications in optoelectronics bioimaging, providing foundation further optimization future studies.

Язык: Английский

Carbon Quantum Dots in Spectrofluorimetric Analysis: A Comprehensive Review of Synthesis, Mechanisms and Multifunctional Applications DOI
Yunfei Gao, Fengyun Wang, Xihui Mu

и другие.

Talanta, Год журнала: 2025, Номер unknown, С. 128066 - 128066

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Ag Nanoparticles Functionalized Graphitic Carbon Nitride Nanosheets for Dual Detection of Tartrazine and Sunset Yellow in Food Samples DOI
Arushi Sharma,

Aashima Sharma,

Ramesh Kataria

и другие.

ACS Food Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0

Construction of a stable fluorescent sensor based on CsPbBr3/CdS core/shell quantum dots for selective and sensitive detection of tetracycline in ethanol DOI

Yang He,

Yangjie Li, Han Wang

и другие.

Analytical Methods, Год журнала: 2024, Номер 16(15), С. 2267 - 2277

Опубликована: Янв. 1, 2024

Construction of a stable fluorescent sensor based on CsPbBr 3 /CdS core/shell quantum dots for selective and sensitive detection tetracycline in ethanol via mechanism integrating photoinduced electron transfer.

Язык: Английский

Процитировано

1

Synthesis of hydrothermal-assisted papaya peel-derived carbon quantum dots impregnated carboxymethyl cellulose and pectin crosslinked nanohydrogel for shelf-life enhancement of strawberry DOI

Sweezee Thakur,

Aarti Bains, Anil Kumar

и другие.

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 283, С. 137591 - 137591

Опубликована: Ноя. 13, 2024

Язык: Английский

Процитировано

1

Ethylenediamine Assisted Synthesis of o‐Phenylenediamine‐Based Red Emissive Carbon Quantum Dots: A Strategy to Improve the Fluorescence Quantum Yield DOI Open Access

Xipeng Dong,

Wanqing Li, Xue Chen

и другие.

Advanced Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 31, 2024

Abstract O ‐phenylenediamine (OPD) is commonly used as a precursor in the preparation of red emissive carbon quantum dots (R‐CQDs) due to sp 2 hybridized structure. However, low fluorescence yield (QY) OPD‐based R‐CQDs limits its application. Although some efforts have been made, improvement QY still limited. In this paper, strategy proposed improve by introducing ethylenediamine (EDA), which plays key role nitrogen (N) dopant high N content. The molar ratio OPD EDA (M /M ), reaction time (t) and temperature (T), amount concentrated H SO 4 (V H2SO4 are optimized. with 32.65% full width at half maximum (FWHM) emission narrow 25 nm obtained via hydrothermal procedure under optimal experimental conditions (i.e., M = 1/3, t 6 h, T 180 °C V mL). Such higher than most reported R‐CQDs. Besides, it found that acts catalyst addition protonation. enhancement attributed increase aromatic N‐containing heterocyclic structures (C═N) after introduction catalysis .

Язык: Английский

Процитировано

1

Fruit waste-derived carbon dots with rhodamine B for the ratiometric detection of Fe3+ and Cu2+ DOI
Junyu Zhang, Yi Chen, Yiyang He

и другие.

Analytical Methods, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A green and eco-friendly solvothermal approach is proposed for the synthesis of carbon quantum dots (CQDs) from watermelon rind.

Язык: Английский

Процитировано

0

Surface modification of nitrogen-doped carbon quantum dots for enhanced functionalities DOI
Pham Van Duong, Le Anh Thi,

M. D. Hieu

и другие.

Communications in Physics, Год журнала: 2024, Номер 34(4), С. 413 - 413

Опубликована: Дек. 19, 2024

A facile and controllable one-step atmospheric pressure microplasma method was employed to synthesize nitrogen-doped carbon quantum dots (N-CQDs) with tunable optical properties. The N-CQDs were characterized using Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, UV‒Vis absorption photoluminescence spectroscopy. HRTEM revealed uniformly distributed spherical nanoparticles a graphite-like structure. FTIR confirmed effective nitrogen doping, enhancing chemical stability. spectroscopy redshifted peaks, indicating improved electronic interactions reduced bandgap (4.05 eV) compared those of undoped CQDs (4.18 eV). PL analysis excitation-dependent emission significantly higher yield (PLQY) 33.09%. These results suggest that hold promise for applications in optoelectronics bioimaging, providing foundation further optimization future studies.

Язык: Английский

Процитировано

0