Intrinsically fluorescent nitrogen-containing carbon nanoparticles synthesized by a hydrothermal process

Yang, Zhengchun; Li, Xu; Wang, John

doi:10.1016/j.carbon.2011.07.038

Cited by 160 publications

(92 citation statements)

References 28 publications

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“…Furthermore, the wavelength of emission was approximately 462 (AE5 nm) indicating a uniform size distribution of CDs, which conrms the DLS and TEM results. 38,39 The PL characterization approves that the asprepared CDs indicate an independent-excitation behaviour. X-ray photo-electron spectroscopy (XPS) was utilized to investigate the chemical composition of the CDs (Fig.…”

Section: Resultsmentioning

confidence: 99%

Wound dressing application of pH-sensitive carbon dots/chitosan hydrogel

2017

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Monitoring the pH of wounds has been recognized as an essential diagnosis factor during the healing process. This study presents a novel chitosan-carbon dots nanocomposite with dual applications as an antibacterial and pH-sensitive nano-agent for enhancing wound healing and monitoring the pH at the same time. The carbon dots (CDs) were synthesized using ammonium hydrogen citrate under Furthermore, the optimized ratio of CDs/chitosan nanocomposite was used as an antibacterial wound healing bandage and in vivo experiments were carried out on three groups of rats. The results showed that the CDs/chitosan nanocomposite not only possessed high pH sensitivity, but could also improve the wound healing process due to its antibacterial properties.

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Section: Resultsmentioning

confidence: 99%

Wound dressing application of pH-sensitive carbon dots/chitosan hydrogel

2017

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“…After being initially reported by Scrivens' group [1], CQDs have attracted considerable attention in achieving better synthetic routes and developing novel applications. A lot of simple methods have been developed to synthesize CQDs, such as electrochemical method [2,3], heat injection method [4], microwave method [5,6], ultrasonic method [7,8] and hydrothermal method [9,10]. More recently, intensive research efforts have been focused on the preparation of CQDs from biomass materials, such as grass [11], pomelo peel [12], orange juice [13], egg [14] and soy milk [15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of cell-penetrated nitrogen-doped carbon dots by hydrothermal treatment of eggplant sepals

Wang

Jiang²

2016

Sci. China Chem.

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Novel nitrogen doped carbon quantum dots were successfully fabricated by a hydrothermal method with eggplant sepals as carbon source. The carbon materials were characterized by transmission electron microscopy (TEM), UV-Vis adsorption, Fourier-transformed infrared spectroscopy (FTIR), fluorescence and the X-ray photoelectron spectroscopy (XPS) measurements, respectively. The carbon quantum dots showed excellent photoluminescence property with high stability in phosphate buffer solution with different pH values from 5 to 9, even in the cell culture medium supplied with the fetal bovine serum. Meanwhile, we also studied the interaction of carbon quantum dots with living HeLa cells with confocal microscopy. Our results indicated that the carbon quantum dots can enter the living HeLa cells by cellular penetration. carbon quantum dots, eggplant sepals, fluorescence, bioimaging, cellular penetration Citation:Wang Y, Jiang X. Synthesis of cell-penetrated nitrogen-doped carbon dots by hydrothermal treatment of eggplant sepals.

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“…The nuclei then grow into carbonaceous nanoparticles with many hydrophilic functional groups, for example carboxyl, hydroxyl, and amide groups. 25,26 Finally, the carbonaceous nanoparticles are mostly carbonized by intermolecular and intramolecular dehydration to furnish the fluorescence CQD. 27 …”

Section: Mechanism Of Formation Of Cqdmentioning

confidence: 99%

Low-Temperature Hydrothermal Synthesis of Green Luminescent Carbon Quantum Dots (CQD), and Optical Properties of Blends of the CQD with Poly(3-hexylthiophene)

Feng

Zhao

Yan

et al. 2015

Journal of Elec Materi

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Carbon quantum dots (CQD) emitting green photoluminescence (PL; emission peak at 500 nm) with satisfactory quantum yield (12.1%) were synthesized by a low-temperature hydrothermal method (90°C for 2 h) with L-ascorbic acid as carbon source and ethanediamine as catalyst. The as-prepared CQD dispersed readily in aqueous media, were of average diameter 6.2 nm, and their PL performance was excitation-independent. The photoluminescence wavelength of the CQD was pH-independent but the photoluminescence intensity was pH-dependent. Films of the composite materials poly(3-hexylthiophene) (P3HT) and the CQD were prepared by spin-coating and characterized by ultraviolet-visible absorption spectrophotometry and fluorescence spectrometry. The results revealed enhanced ultraviolet-visible absorption of the P3HT-CQD film compared with pure P3HT and substantially reduced PL intensity of the blend film. Experimental and theoretical results indicate the feasibility of using the CQD as a new acceptor material in polymeric photovoltaic devices.

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Intrinsically fluorescent nitrogen-containing carbon nanoparticles synthesized by a hydrothermal process

Cited by 160 publications

References 28 publications

Wound dressing application of pH-sensitive carbon dots/chitosan hydrogel

Wound dressing application of pH-sensitive carbon dots/chitosan hydrogel

Synthesis of cell-penetrated nitrogen-doped carbon dots by hydrothermal treatment of eggplant sepals

Low-Temperature Hydrothermal Synthesis of Green Luminescent Carbon Quantum Dots (CQD), and Optical Properties of Blends of the CQD with Poly(3-hexylthiophene)

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